ubuntu 12.04 completely freezes frequently.

[ketanpatil]

Update: 6/12/2012
This bug is about a complete system lock-up. No other TTYs can be started. Mouse doesn't move. Keyboard doesn't react. The only solution is hard reset.

Seems to happen on a variety of configurations, including nVidia, ATI and Intel graphics.

If you are still able to TTY or SSH into other sessions, move the mouse or use the keyboard, file another bug.

Thx. Brains.

Update: 5/21/2012
Updating the kernel to 3.3.6 as suggested by Michael in #91, the system seems stable, no freezes yet in 5-6 hrs of using and watching videos for couple of hrs.

Original description:
I recently installed newly released ubuntu 12.04 LTS 64 bit version on my desktop. And it is frequently freezing, for the first few hours it ran smoothly and when I started watching videos it started freezing randomly.
I have to use hard restart every time.
Initially it was only during videos but now even during normal browsing it is freezing.

I am using on board graphics and do not have any graphics card installed.

Can someone please help me here, I really love the new looks of 12.04 and it bugs me not being able to use :(

Below is my hardware configuration:
Processor: Intel CORE i3 processor (2nd generation)
Board: Intel® Desktop Board DH67BL
Ram: 4GB
Graphics: On board
HDD: 500 GB

Please let me know if you need more information, or any specific logs I can capture (and how).

Thanks,
Ketan Patil

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/993187/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[ketanpatil (patil-ketan)]

Updated the package to xorg since this appears to be a display issue. I am sorry for not being able to pinpoint more.

[Hugo Venhorst (yougo)]

i'm experiencing random freezes too.

OS: ubuntu 12.04 64 bit
kernel: 3.2.0.24 generic
Gnome 3.4.1
Device: Acer 9300 laptop
RAM: 1.7 GiB
CPU: AMD Athlon(tm) 64 X2 Dual-Core Processor TK-53 × 2
Graphics card: NVIDIA GeForce Go 6100
Graphics driver: Nouveau

I'm on Nouveau because of the NVIDIA security patch debacle (bug 982485)

the system freezes at seemingly random points and leaves me with only a cursor.
i can reboot through CTRL+ALT+SysRq REISUB, and it does close open programs properly, though unsaved data is lost.

i am at a loss what commands to type to get log results etc.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Hugo Venhorst (yougo)]

i managed to file a report with added data. see Bug #994203

[Daniel Ferradal (dferradal)]

I have this problem too.

I have tried selecting ubuntu2d to no avail either, it freezes.

I have tried to not log in to X with lightdm, but instead just do a alt+f1 and go straight to console and I get a total freeze even.

Tried to connect from the outsite but the ip of the machine in question was not responding. So it is a total freeze.

After installing, some reboots, installing propietary nvidia driver 295.40, which worked fine for me and working with the desktop for a while I got my first freeze, since then, I have tried uninstalling the nvidia propietary driver but I still get freezes, quicker freezes even.

My freezes are fast but I managed to collect some preliminary data.

Dmesg.txt includes dmesg complete output + lspci + lsusb output.

If there is any other specific info/log I could provide just tell me

[Sentrist Starleaf (starleaf1)]

This also affects me. It seems to have a higher chance while browsing the web, regardless of the browser I use.
When it freezes, nothing but the cursor responds. I am using drivers from xorg-xserver-video-ati, no proprietary driver.

Ubuntu 12.04 32bit.
VAIO VGN-CR353
ATi Mobility Radeon X2300
Intel Core2 Duo T8100

[Daniel Ferradal (dferradal)]

We're talking about a complete system freeze. If you can move the mouse it is related to graphics only.

[Pdparo (pdparo)]

Hi, I'm also experiencing random freezes. Same symptoms: nothing but the cursor responds.
I have and AMD Radeon HD 6600M Series.
I DID NOT installed the suggested fglrx driver during the installation.
My machine is a Dell Vostro 3550.

[Hein (hhanssen)]

Hi,

I also have these random freezes (Pangolin 64 bit on a Acer 5720 laptop with Nvidia Graphics and the restricted / Closed source Nvidia driver installed).

I have noticed though that it is 'only' the screenoutput that freezes/ comes to a halt. Yes, the mouse cursor still moves, but nothing else seems to happen. But as I was copying lots of files and my screen freezed I did not touch my system until I was confident that the copy process should be ready: in fact the control leds of my HD worked! and my Wifi indicator also worked (I was also downloading a file).

After a while (led of HD and Wifi returned to idle) I switched off my system and rebooted the system. The files were copied correctly and my download was saved properly in my downloads directory.

I have also noticed that starting any browser (Firefox / Chrome) will hang the system more quickly. I have also noticed that other 'screen-intensive' software like e.g. shotwell or any fotoviewer will cause the system to hang if used heavily.

This bug seems to be highly related to screen output and apparantly nothing else. As Pdparo reports this on AMD Radeon as well (and even without the closed source driver installed) it is most likely not a problem directly caused by those drivers.

I have noticed that my screens sometimes 'flashes' (on/off, but then very very fast) as it seems to refresh the screen.

If you google this subject you will find lots of posts in forums as well: this seems to be a huge issue!

I hope this information will help killing this nasty bug asap!

[Hein (hhanssen)]

I just found these 'solutions'. Perhaps it helps to sort out the problem:
http://www.andreagrandi.it/2012/04/27/ubuntu-12-04-nvidia-8800-gs-and-nouveau-drivers/
http://blog.shevin.info/

[David Lowes (davidl-david)]

I think this issue is related to "compiz"

I found a workaround for this issue:

When the computer freezes do the following:

1. CTRL+ALT+F1 (to get to the console)
2. login as your user.
3. sudo pkill compiz-redirector

Xwindows will appear to restart but the applications running under your X will not be killed.

[Christophe (touil1976)]

I have the same problem.

I use a freshly installed Ubuntu 12.04, and when I log under unity (3d) the GUI freezes after some time randomly. It can be when I surf the web with firefox or when I read a pdf file in evince. The mouse still moves on the screen, but nothing happens when I click somewhere. The system goes on working, for example, the music in rythmbox does not hang.

I think the problem is due to compiz, as no problem occurs when I log under unity2d.

[David Lowes (davidl-david)]

I want to correct the procedure:

1. CTRL+ALT+F1
2.Login as user.
3. sudo pkill compiz-decorator
4. pkill -9 compiz

[Christophe (touil1976)]

I think this could help. The bug just appeared again as I was within a gnome classic (WITH effects) session with my ubuntu 12.04 64 bits.

So it looks like it's really a issue of compiz and not really a bug in unity.

[Johan Lejonborn (soltrumman)]

This bug seems to affect me as well. Ubuntu 12.04 64bit, Nvidia 295.40.

Screen freezes and the cursor stops moving. Also experienced a black screen followed by a forced reebot.
Other operating systems on the computer works fine.

[Brendan Brigham (brigham)]

I'm also having a similar complete freeze, no mouse movement. Fresh install 12.04 32bit is freezing every so often. Was watching a video earlier, noticed the curser was no longer moving for me then the video started shuddering. Was typing an email a few minutes ago when it froze again. I think this has happened like 5 or 6 times now. I have to hold the power button to shut it down, then when it starts again it stops at the colored screen but has a black section across it with colored lines around the edges of the black, press the reset button and it will boot to the grub boot menu. From there it starts ok but long boot time.

Release 12.04 (precise) 32-bit
Kernel Linux 3.2.0-24-generic-pae
GNOME 3.4.1

Intel® Core™ i3 CPU 540 @ 3.07GHz × 4
Asus ENGT240, not using Nvidia drivers due to the white screen issue with one of my multiple monitors.

[Fredde (fredde-iki)]

Same problem here, freezes about once every work day, which is rather alarming. Mouse moves and music keeps playing. I can Ctrl+Alt+F1 into the console, but if i try to go back without restarting anything, it will lock down completely, with a hard reset left as the only option.

Release: 12.04 64-bit
Kernel: Linux 3.2.0-24-generic #37-Ubuntu SMP

Intel® Core™ i7-2600 CPU @ 3.40GHz × 8
16 GB RAM
Linux installed on SSD-drive
Dual monitors (read somewhere that this might be related)
Video card: Advanced Micro Devices [AMD] nee ATI RV515GL [FireGL V3350]
Video driver: xorg default, no proprietary driver.

[James (softwarearchitect73)]

Problem : Ubuntu 12.04 freezes , not able to click any button on keyboard or mouse , unable to go to console or reboot. the screen looks 3/4th black and 1/4th grey color. power off is the only option.

some more details.
I am using Intel i5 Dell laptop with 8GB RAM, Upgraded from Ubuntu 11.10 to 12.04, while this happend , I was using virtual box VM, JDeveloper and Mozilla Browser was Open . I often used to get "crash report" with send message button .

Conclusion : Ubuntu 11.10 seemed to be very stable - for 2 years it never crashed. But with 12.04 - its been hard to work

[yorgasor (yorgasor)]

It looks like we may have two separate bugs. People who have their xsession mostly freeze but can still access the console and move the mouse, and those whose systems completely lock up. I'm getting the 'completely locked up' problem.

I started with the default nvidia drivers. I would get almost daily system freezes so I upgraded to the latest ones available from the 'Additional Drivers' menu. I still had daily system freezes, so I disabled the nvidia drivers from the 'Additional Drivers' menu and started using the nouveau drivers. This still locks up daily. It doesn't matter if I'm using the system or not, sometimes I'll find it frozen when I get up in the morning.

I'm using 12.04 64 bit with kernel 3.2.0-24-generic #37-Ubuntu SMP. This computer was rock solid before my upgrade to 12.04. I can see errors in the /var/log/syslog file at the time of the system freeze. I get messages like the one below. Sometimes I'll get many register dumps, one for each CPU in my 8 core system. The process name is always different as well, but it's always a BUG: soft lockup error. For those experiencing just the X freezes, but can still log in remotely or on the console, it would be good to know if you see something similar. It might help determine whether these are two separate bugs or the same bug that affects people differently.

May 10 12:41:54 bread kernel: [58856.680822] BUG: soft lockup - CPU#1 stuck for 22s! [gvfs-gdu-volume:3807]
May 10 12:41:54 bread kernel: [58856.680826] Modules linked in: autofs4 bnep ppdev rfcomm bluetooth nfsd binfmt_misc nfs lockd fscache auth_rpcgss nfs_acl sunrpc dm_crypt snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device psmouse snd serio_raw pl2303 usbserial soundcore snd_page_alloc i7core_edac edac_core ioatdma dca mac_hid shpchp lp parport nouveau firewire_ohci firewire_core crc_itu_t usbhid hid e1000e ttm mptsas drm_kms_helper mptscsih mptbase drm scsi_transport_sas i2c_algo_bit mxm_wmi wmi video floppy [last unloaded: parport_pc]
May 10 12:41:54 bread kernel: [58856.680882] CPU 1
May 10 12:41:54 bread kernel: [58856.680884] Modules linked in: autofs4 bnep ppdev rfcomm bluetooth nfsd binfmt_misc nfs lockd fscache auth_rpcgss nfs_acl sunrpc dm_crypt snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device psmouse snd serio_raw pl2303 usbserial soundcore snd_page_alloc i7core_edac edac_core ioatdma dca mac_hid shpchp lp parport nouveau firewire_ohci firewire_core crc_itu_t usbhid hid e1000e ttm mptsas drm_kms_helper mptscsih mptbase drm scsi_transport_sas i2c_algo_bit mxm_wmi wmi video floppy [last unloaded: parport_pc]
May 10 12:41:54 bread kernel: [58856.680926]
May 10 12:41:54 bread kernel: [58856.680930] Pid: 3807, comm: gvfs-gdu-volume Not tainted 3.2.0-24-generic #37-Ubuntu Supermicro X8DA6/X8DA6
May 10 12:41:54 bread kernel: [58856.680935] RIP: 0010:[<ffffffff8103db25>] [<ffffffff8103db25>] __ticket_spin_lock+0x25/0x30
May 10 12:41:54 bread kernel: [58856.680944] RSP: 0018:ffff880622ef9b48 EFLAGS: 00000297
May 10 12...

[Trevor Bradley (ck-trevor)]

This is hitting both my home server and my work desktop hard.

I can freeze my 64 bit 12.04 desktop by opening a few windows (firefox, thunderbird, rhythmbox) and holding down alt-tab for a few seconds. My home server is freezing about every 24-48 hours and my software RAID isn't very happy about being constantly rebooted.

In some instances the mouse pointer can move, other times it is frozen. Music continues to play but starts getting patchy. The times where I have had top open, system load skyrockets.

I'd love to help diagnose this, but am uncertain what info I can give when things freeze up. I can reproduce this freeze on demand. What diagnosic info can I give?

[Trevor Bradley (ck-trevor)]

The freezing is so bad I'm often unable to switch to a terminal with Ctrl-Alt-F1, and when I can't I can't get past the password prompt. The whole thing just seizes up. I could try having a terminal open from another machine and watch the behaviour of top.

[Trevor Bradley (ck-trevor)]

Switching to nvidia drivers 295.49 and fixing a conflict in CompizConfig where both the Unity Application switcher and Application Switcher were activated simultaneously seems to have resolved the issue on my work computer. Crossing fingers that I can fix things when I get home...

[Brendan Brigham (brigham)]

I'm adding an update to my previous post, system has froze 5 times this morning and I have part of a log file from the incidents. Every freeze shows the same entries and can not access terminal through ctrl+alt+f2...
        -----------------

May 10 16:27:04 brendan-MS-7636 kernel: [ 6695.819009] [drm] nouveau 0000:01:00.0: vm flush timeout: engine 0
May 10 16:27:10 brendan-MS-7636 kernel: [ 6700.136157] [drm] nouveau 0000:01:00.0: PFIFO_INTR 0x04000000 - Ch 2
May 10 16:27:10 brendan-MS-7636 kernel: [ 6702.131867] [drm] nouveau 0000:01:00.0: vm flush timeout: engine 5
May 10 16:27:12 brendan-MS-7636 kernel: [ 6704.127705] [drm] nouveau 0000:01:00.0: PGRAPH TLB flush idle timeout fail: 0x00bff403 0x00140008 0x0000106d 0x0014db43
May 10 16:27:14 brendan-MS-7636 kernel: [ 6706.123291] [drm] nouveau 0000:01:00.0: vm flush timeout: engine 0
May 10 16:27:19 brendan-MS-7636 kernel: [ 6709.404267] hrtimer: interrupt took 192483135 ns
May 10 16:27:19 brendan-MS-7636 kernel: [ 6710.440891] [drm] nouveau 0000:01:00.0: PRAMIN flush timeout
May 10 16:27:19 brendan-MS-7636 kernel: [ 6710.440932] [drm] nouveau 0000:01:00.0: PFIFO_INTR 0x00800000 - Ch 2
May 10 16:27:21 brendan-MS-7636 kernel: [ 6712.436529] [drm] nouveau 0000:01:00.0: vm flush timeout: engine 5
May 10 16:27:21 brendan-MS-7636 kernel: [ 6712.436622] [drm] nouveau 0000:01:00.0: PFIFO_INTR 0x04000000 - Ch 2
May 10 16:27:25 brendan-MS-7636 kernel: [ 6714.432254] [drm] nouveau 0000:01:00.0: PGRAPH TLB flush idle timeout fail: 0x00bff403 0x00140008 0x0000106d 0x0014db43
May 10 16:27:25 brendan-MS-7636 kernel: [ 6716.427840] [drm] nouveau 0000:01:00.0: vm flush timeout: engine 0
May 10 16:27:30 brendan-MS-7636 kernel: [ 6722.070451] [drm] nouveau 0000:01:00.0: PRAMIN flush timeout
May 10 16:27:30 brendan-MS-7636 kernel: [ 6722.070461] [drm] nouveau 0000:01:00.0: PFIFO_INTR 0x00800000 - Ch 2
May 10 16:27:32 brendan-MS-7636 kernel: [ 6723.395155] [drm] nouveau 0000:01:00.0: PFIFO_INTR 0x04400000 - Ch 2
May 10 16:27:32 brendan-MS-7636 kernel: [ 6724.066053] [drm] nouveau 0000:01:00.0: vm flush timeout: engine 5
May 10 16:27:36 brendan-MS-7636 kernel: [ 6726.061655] [drm] nouveau 0000:01:00.0: PGRAPH TLB flush idle timeout fail: 0x00bff403 0x00140008 0x0000106d 0x0014db43
May 10 16:27:36 brendan-MS-7636 kernel: [ 6728.057240] [drm] nouveau 0000:01:00.0: vm flush timeout: engine 0
May 10 16:27:39 brendan-MS-7636 kernel: [ 6730.706787] [drm] nouveau 0000:01:00.0: PRAMIN flush timeout
May 10 16:27:39 brendan-MS-7636 kernel: [ 6730.706824] [drm] nouveau 0000:01:00.0: PFIFO_INTR 0x00800000 - Ch 2
May 10 16:27:40 brendan-MS-7636 kernel: [ 6732.031489] [drm] nouveau 0000:01:00.0: PFIFO_INTR 0x04400000 - Ch 2
May 10 16:27:41 brendan-MS-7636 kernel: [ 6732.702406] [drm] nouveau 0000:01:00.0: vm flush timeout: engine 5
May 10 16:27:44 brendan-MS-7636 rtkit-daemon[1350]: The canary thread is apparently starving. Taking action.
May 10 16:27:44 brendan-MS-7636 rtkit-daemon[1350]: Demoting known real-time threads.
May 10 16:27:44 brendan-MS-7636 rtkit-daemon[1350]: Successfully demoted thread 1700 of process 1646 (n/a).
May 10 16:27:44 brendan-MS-7636 rtkit-daemon[1350]: Successfully demoted thread 1699 of process ...

[openmissoula (mjewell)]

My system freezes every few hours.

I've used ctrl-alt-fn+F1 to switch to another terminal and open a sudo bash shell and then back to my 64 bit 12.04 LTS Ubuntu Desktop (Lenovo Thinkpad E520) to keep working as long as possible before having to do a hard reboot.

Freezes happen less frequently when (a) logged in with the Ubuntu 2D option and (b) fewer applications are running.

When the freeze happens, I can't generally toggle back to the open bash shell on F1 because the keyboard and cursor are not responsive.

However, a few times, the system has become sluggish before freezing, and I was able to toggle back to the shell and use "top" to look for obvious malefactors.

So far I have not observed any large spikes in cpu use or memory or other strange numbers before the freeze made the entire system unresponsive. (I should note that I'm inexperienced at investigating this type of problem.)

Without help, I don't know how to ssh into the system to observe the freeze in real time and, because I'm supposed to be working at my regular job, I lack the minutes needed to work out how to do it. If I can get some time this weekend, I will call someone to help me and try it out.

Would it be helpful to post the output from dmesg and /var/log/syslog even if collected *after* a hard reboot? If there is other information that would be helpful, I can try to gather it.

[Frank Trenkamp (drw06-frank)]

Same here, X is freezing a couple of times a day, mouse still movable, no clicks/keyboard input accepted, but can switch login on a console via e.g. Alt+F1.

Running on an Lenovo R60 with an ATI Radeon X1400, updated 12.04 from 11.10; system was perfectly stable before the dist-upgrade.

Happy to provide further input if needed, can't find anything suspicious in dmesg, syslogs or xsession errors etc.

[Robert Loggs (mrbloggs)]

Same problem, freezing completely no input response at all. It definately looks like there's two bugs here:

One where just the display freezes CTRL/ALT/F1 allows access to a terminal.
One where system locks completely requiring hard reboot.

I'm guessing the hard freeze issues relate to a bug here which seems to be affecting multiple distros:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/908335

[Skully (skully)]

Not sure if its related but i have a similar problem after the upgrade from 10.04 to 12.04.
I usually get a freeze when i close tabs in my browser (often with flash elements, Opera) or just opening a link with a flash video.

After a while opera will be responsive again since the plugin are called in a separate process (plugin-wrapper) which crashes and will start again.

Also using x64 system with NVidia 9600GT and Gnome3 (gnome-shell).

[Daniel Ferradal (dferradal)]

Has anyone tried compiling and working with a different kernel version than the one which ships with ubuntu?

[yorgasor (yorgasor)]

I've been using the last kernel released with 11.10 since my crash yesterday. So far, I haven't had any problems. If I can last another day, I'll be 95% sure that solved the problem. I don't think I've gone 2 days since my upgrade on this computer. Oddly enough, I've upgraded 3 other laptops as well, one of which has an nvidia Quadro NVS 140M, but so far only my dual xeon w/ 24G ram & nvidia gt9600 workstation is having this problem. Only one of my laptops is running x64, but the one with the nvidia card is i386.

It looks like some people suffering from this problem have ATI cards and/or are on i386 as well, so maybe that isn't the common denominator.

[Brendan Brigham (brigham)]

I've trying to do some lite work today fixing my conkys that got messed up from stupidly installing 12.04 and had a freeze every 5-8 minutes for 2 hours, it won't be long and I'll have to replace my reset button o.O I should have stayed with 11.04.
Was using gedit and viewing my home folder only so it's not like my i3 or Nvidia card were working so I doubt it has anything to do with system usage.
Confirmed......but no importance ? There's gotta be thousands of systems that are doing this and it's not labelled critical or assigned ?

[zemadz (zemadz)]

Random freezes, I can access the console and move the mouse.

Thinkpad T60 (ATI X1400, 12.04 x64)

[Hein (hhanssen)]

After a large update yesterday including Compiz I hoped we would have some solution. Nope. My system still randomly freezes and my screen flashes like a strobe light in the discotheque sometimes.

What really bothers me is that if you google you see that lots and lots of Pangolin users suffer from this bug (over 200.000 hits) yet this bug hasn't been assigned yet. Solution to be far far away this probably means, or we must hope that some update will bring the solution accidentily.

If this is the way Ubuntu works these days, I'd rather spent a hundred bucks and get that so called crappy Windows 7: it at least doesn't freeze a twenty or thirty time a day. Or I will move away to another Linux distro that takes it's users a bit more serious.

For now to have a working system I will probably downgrade to 11.10.

I think it's mainly due to the fact that Ubuntu has been moving away from mainstream development with Unity and multiple monitor support. Don't get me wrong: I like the Unity concept and I also hope for a good multiple monitor solution for Linux, but I'd rather see efforts bundled instead of forked.

For now: please please please developers dive into this nasty bug. We (the users) are suffering: we need a GUI that works!

[Hein (hhanssen)]

For me it's enough now. I'm going to downgrade to 11.10/ reinstall 11.10. That version at least worked! Just got 5 times a hanging system in just 20 minutes: this is ridiculous!

[fpippo (fpippo)]

Hi,

some problem for me with oneiric kernel 3.0.0-19-generic gnome 3.2.1 64 bit - with today latest update .

[Daniel Ferradal (dferradal)]

I tried compiling the kernel from kernel.org, version 3.3.5, it took a while but it also freezed completely (machine completely unresponsive, no mouse or ping or ctrl+alt+f1 out of it) same as with ubuntu stock kernel.

I am including my syslog of the whole evening with the two different kernels (ubuntu, kernel.org 3.3.5, but since the freeze is sudden never gets anything substantial logged).

[Daniel Ferradal (dferradal)]

I must say I have installed 12.04 succesfully in 3 other machines with no freezes, so maybe this is happening on fairly new type of hardware?

My results in different boxes:
* Lenovo T400 laptop, Intel Integrated, 32bit install, successful
* Intel Core Duo E6600, 32bit install, Nvidia Gforce 210, succesful
* Zotac AD02, 64bit install, ATI integrated [Radeon HD 6310], successful
* Intel I7-950, 64bit install, Geforce GTX470, random total lockup/freezes.

[yorgasor (yorgasor)]

I've managed to solve my problem by using kernel 3.0.0-17-generic x86_64 from 11.10, and I've gone a couple days now without any lockup.

[Norm (norm-nft)]

I have the same problem with the 32 Bit version.
Frequent random lockups, the only thing that will work is the mouse cursor, hard reset to recover.
 The problem has also occurred during normal shutdown and system hangs and needs to be powered off to shutdown.
Have been forced to go back to Windows!
11.10 was working perfectly.

ASUS F3S series laptop
Intel Centrino DUO T7300 Processor
2 Gb Ram
500Gb HDD
NVIDA Geforce 8400M Video

[Hein (hhanssen)]

@ Norm. That's bad. I wanted to try the 32 bit version as I encounter the freezes with the 64 bit version. But if the 32 bit version does the same than that's no way out. Did you try the 64 bit version as well? It's necessary for the solution of this bug to know if both versions (64 and 32 bit) have this bug.

I will probably try the 32 bit version as live version and test if it does have the same lock ups. If not I will install it and test it further. I would still love to use Ubuntu 12.04 and I don't mind to use the 32 bit version as the 64 bit doesn't really have any direct advantages for me.

Strange that the importance of the bug is still undecided and has not yet been assigned to anyone. 25 users that take the trouble to report this bug must imply that there are at least hundreds, if not thousands of users running into trouble with this bug. And this bug is a real show stopper as it completely freezes the system! I ask my self what the developers are doing? Are they asleep?

[leh (lech-szumilas)]

Fails the same way for me too. Sometimes a complete freeze, sometimes I am able to switch to the text terminal.

[tonisbarello (antonioliguori82)]

I have the same problem too with 32 bit version.
I noticed it often happens while i'm using the mouse scroll, maybe it could help finding a solution.

[Trevor Bradley (ck-trevor)]

I've manage to radically reduce the instability on my machine my upgrading my NVIDIA drivers from 295.40 to 295.49: https://launchpad.net/~ubuntu-x-swat/+archive/x-updates/+build/3482042 (i386). amd64 can similiarly be grabbed from launchpad)

I don't think it's the entire picture, but not crashing in 48 hours or having massive loads sure seems to be on the right track.

[Hanine HAMZIOUI (hanynowsky)]

I suffer the same fatal bug ( yes, Since it's been UDS these last week, the bug might have passed unseen?).
A fatal bug that prevents even the advanced and experts from using Ubuntu 12.04 LTS as a Production machine and home desktop OS.
In my case, the system freezes completely with no ability to access console mode. Every few hours.
My machine is a Dell XPS 15 L502X AMD64 (i7 Sandy Bridge - with Intel HD 3000 & Nvidia GT525m).
Hard shutdown can be fatal for the HDD and the whole system. This can be enough to mark the bug as being CRITICAL.

Nothing in the log file that indicates a reason for this bug.

[Brendan Brigham (brigham)]

@Trevor Bradley ..I'm not so sure the Nvidia drivers have much to do with it, I am running 2 monitors and they are a "no go" with Nvidia. I have to use the open source drivers cause the one's from Nvidia will white screen one monitor and the cursor turns to an x.

For others, mine is also 32bit and have no input what so ever on freeze.

[Daniel Ferradal (dferradal)]

Indeed, I have just tried the 295.49 driver from nvidia, removing everything nvidia from ubuntu previously and I still got the freeze.

I also installed latest oneiric kernel with the same result to see if I get lucky as @yorgasor and still got the total freeze.

[Michael (starkpc)]

My machine also freezes completely, no mouse or keyboard response, but only in unity.
it freezes mostly in firefox (klick on tab or link), but also in ubuntu software-center or chromium-browser (rare).

important:
unity-2d works fine!
I can browse the web in unity-2d without any freezes.
I can play openarena (0.8.5-10) in unity-2d for hours without any freezes.
so maybe its compiz or unity 3D related?

machine specs:
os: ubuntu 12.04 , 64bit
cpu + gpu: Intel i5-3570K CPU
mainboard: Gigabyte Z77M-D3H (F6 BIOS)

[vipil.vicky (vipil-vicky)]

I read all the issues written over here. Well the problem happens to me as well. This is happening from ubuntu 11.04 while using ubuntu 3d in respect of 32 bit or 64 bit. The main problem is the the Xorg freezes. Mouse can be moved but no response. The freeze is on the screen. But what ever is running in the background still keep on running, such as music .

I can go to console, and kill the Xorg process, which will restart the xorg and can work till it freezes again.

The common problem that can be noticed here is the graphic card. My system has an onboard ati radeon X2300 graphic card, which some of the people over here have.

Well ubuntu is running good on my acer netbook. Its really hard to use ubuntu when it keep on freezing as all the data get lost once it freezes.

Hope this bug could be fixed in the earliest.

[Antonio Roberts (hellocatfood)]

When my system freezes the mouse and everything else is unresponsive - I can't even get to a console. Also any music or video that is completely playing stops as well i.e. a complete freeze

I'm running Ubuntu 12.04 on a Dell Studio 1555 laptop with ATI Radeon graphics (flgrx driver)

[Michael (starkpc)]

same here (see comment #47)
my workaround is unity-2d ;)
please test unity-2d... the problem is 3d desktop related...

[Hein (hhanssen)]

Yesterday I did test run Ubuntu 12.04 32 bit from CD without any updates or closed source drivers. That went perfectly well: no hanging system, good performance. I'd love to install 12.04 32 bit and see how it does after taking the closed source nvidia drivers and updates, but I'm affraid I have an completely useless system once again.

Problems with 64 bit version were also not there when test driving it from CD as far as I can remember. Has anybody tried to test his/her system with a clean install without updates and then adding the updates one by one? This could track down which update breaks 12.04 (if it is related to updates installed after installation as I suspect). If we know which update breaks Ubuntu it should be a bit easier to track down the problem!?

Unfortunately I will not be able to test this in the coming 4 to 5 days.

Bug already scores 180 points but it seems we are still left alone by the developers.

[Antonio Roberts (hellocatfood)]

Should the bug title not be changed to reflect that it happens in both 32 bit and 64 bit systems?

[Bernhard (berns)]

I get complete freezes running Ubuntu 12.04 64 bit on an Intel Ivy Bridge machine with integrated graphics.

For me, one way to induce a freeze is to randomly drag the map in Google Maps, both in Firefox and Chromium. The freeze will occur within a few seconds of dragging. This happens in Unity 3D as well as Gnome Shell, Unity 2D seems to be stable. I suppose this is a 3D-only issue.

When running Unity 3D from a live USB stick I can not reproduce any complete freezes with the map-dragging method, but Firefox freezes for a short time every few seconds. Sometimes the window turns dark. However, the mouse is movable the whole time.

When I make a fresh install as suggested by Hein (#51) the freezes are back, which is why I assume that the problem is not introduced by an update.

Many of you seem to use mobile or integrated graphics. Might this be a problem with shared memory?

[Brendan Brigham (brigham)]

I agree, 3d may be the issue. I have a Nvidia graphics card I'm running from and have been testing on 2d for 2 days now, I haven't been able to reproduce the freeze. Although I can't stand the 2d environment, it is stable so far, not one problem. Hopefully some developers notice this ;-)

[openmissoula (mjewell)]

I've never had an Ubuntu problem like this one and will need to switch distros if it's not fixed. Should I switch to Debian?

[Michael (starkpc)]

the problem is, how to debug this bug ?!
the machine freezes completely, no mouse or keyboard response.
no chance to switch tty1, tty2 ... Magic SysRq also not working... the machine is completely death :(

unity-2d works fine, but unity/compiz is prettier.

machine specs:
os: ubuntu 12.04 , 64bit
cpu + gpu: Intel i5-3570K CPU
mainboard: Gigabyte Z77M-D3H (F6 BIOS)

[Daniel Ferradal (dferradal)]

A question to everyone.

Which network card are you using to connect to internet?

I have a:
06:00.0 Network controller: Atheros Communications Inc. AR9227 Wireless Network Adapter (rev 01)

which is used by the ATH9K driver.

I have tried Linux mint 12, Debian stable and I have had freezes in all so I bet it is a certain driver screwing but in my case it is making no sense already. Thing is with Debian I have had the freeze after installing just when I was connecting to my wireless for the first time.

Are you guys using the ath9k driver or am I going nuts?

[Trevor Bradley (ck-trevor)]

This is obviously at least 2 or 3 different problems. My problems seem to have cleared up after upgrading to NVIDIA's 295.49 drivers. My SysRq key continued to work even under massive lockup.

Most of us experienced common symptoms: A near complete system freeze with mouse continuing to work implies a unity3d or compiz problem in some way. The only log entries I had that are suggestive any way are likely symptoms of the lockup and system loads in the 40+ range.

I think what a lot of us want is guidance as to how to help diagnose a system that's locked up or going to lock up in this way. If there were only a Magic SysRq key that replied back with which process is causing the system to go to hell.

I'd reccomend going to a text-console and letting top run constantly. If the system starts getting sluggish you can switch back to the console and see what's sucking up all the CPU/IO time.

[Michael (starkpc)]

I have a:
02:00.0 Ethernet controller: Atheros Communications Inc. AR8151 v2.0 Gigabit Ethernet (rev c0)
Kernel driver in use: atl1c

in my case, only unity 3d desktop / compiz freezes. unity-2d works fine.

[Daniel Ferradal (dferradal)]

Excuse my previous report, my wireless card is a AR9287. I see many reports of freezes with this model, even in FREEBSD, googling to find a fix desperately.

The other machine where I was reporting from that never freezes has a AR9227, and it is a 32 bit system.

As many say it is obvious some people are talking about a total freeze and some others reporting a graphics problem.

In my freeze, not the 295.49 drivers not previous kernel versions not another distro (linux mint 12, debian stable) has solved it. It just never freezes in windows.

[Gerardo Felmer (gerardo-felmer)]

Random freezes, I can access the console and move the mouse, its happens at least one time a day.

Machine specs :
RAM 8GB
CPU Intel Xeon E31225@3.1ghz
VGA Xeon E3-1200 Processor Family Integrated Graphics Controller
Ubuntu 12.04 LTS 64bits (from 11.10)

[Daniel Ferradal (dferradal)]

For those of you with TOTAL freeze and using ath9k driver for a wireless card I have been able to fix the problem.

So, my case seemed to be really the wireless driver + the model in used, concretly an AR9287 as reported by lspci.

The same exact looking card in another box reporting as AR9287 instead didn't give me the problem.

And as for the the solution, as I found googling in the ath9k-devel mailing list someone suggested this "modification" to the driver source code that seemed to solve a very similar issue, in any case I tried seeing as the modification made a direct mention of the model I was using, so I downloaded the latest kernel 3.3.6 source, made the following modifications and I haven't gotten any more freezes:

" >Try editing drivers/net/wireless/ath/ath9k/hw.c:__ath9k_hw_init():
>
> if (ah->config.serialize_regmode == SER_REG_MODE_AUTO) {
> if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCI ||
> ((AR_SREV_9160(ah) || AR_SREV_9280(ah)) &&
> !ah->is_pciexpress)) {
> ah->config.serialize_regmode =
> SER_REG_MODE_ON;
> } else {
> ah->config.serialize_regmode =
> SER_REG_MODE_OFF;
> }
> }
>
>Change this:
>
> ((AR_SREV_9160(ah) || AR_SREV_9280(ah)) &&
>
>to
>
> ((AR_SREV_9160(ah) || AR_SREV_9287(ah) ||
>AR_SREV_9280(ah)) &&
>
>.. so the PCI bus glue fix gets applied for AR9227 NICs."

http://<email address hidden>/msg06902.html

After this and using the new kernel I haven't gotten any freezes at all. Been with the same box under linux ubuntu since yesterday about 4-6 hours which is a record for me as I could never spend more than 15 minutes If I tried to download something or use the wireless.

Thing that tipped me is that in a debian install I tried I always got the freeze right after starting to use the wireless card, so it seems in previous kernels the problem was easier to detect.

[Daniel Ferradal (dferradal)]

Fix a typo in previous post
"The same exact looking card in another box reporting as <<<<<AR9227>>>> instead didn't give me the problem."

[Marcelo Escobal (marcelo-escobal)]

If it helps, sometimes i'm able to log in froma another machine using ssh.
But I don't know where to start debugging since I've no idea what is causing the freeze.
Alse: I think this bug should be given more priority since it renders my PC ununsable for serious work.

[Marcelo Escobal (marcelo-escobal)]

Additional info: Atheros Communications Inc. AR5212/AR5213 Wireless Network Adapter here.

[Art Martz (amartz)]

I have had the same Virtualbox freeze after upgrading to 12.04 from 11.10. Prior to this Virtualbox worked flawlessly. I tried some of the suggested fixes, and nothing helps. The only solution is to lean on the power button until it shuts off.

[Hein (hhanssen)]

Ethernet controller: Atheros Communications Inc. AR242x / AR542x Wireless Network Adapter (PCI-Express) (rev 01)

Network adaptor seems to play a role with this bug. Without the network controller activated my system seems stable, but as soon as a switch on my network my system reacts differently: when starting Firefox my mouse pointer freezes a couple of seconds, but it doesn't when my network controller is switched off. Screen flashes sometimes (with network off screen is normal) etc. Seems that the Atheros driver somehow interferes with Xorg and/or Compiz.

Do others also have atheros network adaptors? Can you also try to disable your Atheros card? I have somewhere a USB network adaptor, but can't find it. As soon as I find it, I will try if my system is stable with this network adaptor.

Hope this will help find a solution.

[Brendan Brigham (brigham)]

No wireless here, desktop LAN with Realtek RTL8111DL.
So far 3 days with no freezes in 2d

[ramayer (rm-ubuntu)]

Same issue here.

Machine hangs hard about once every 24 hours.

Mouse is NOT responsive - can not move or click the mouse.

Keyboard is NOT responsive.
Can not Ctrl-F1.
Can not Magic SysRq.

Intel Core i5 3570K 3.4GHz LGA 1155 Processor Intel Core i5 3570K 3.4GHz LGA 1155 Processor
ASUS P8Z77-V LGA 1155 Z77 ATX Intel Motherboard
Crucial 16GB DDR3-1600 (PC3-12800) CL9 Dual Channel Desktop Memory Kit (Two 8GB Memory Modules)
Using the I5's internal GPU.

[Cloudsheen (bensharman)]

Unpredictable machine hangs for me too.

Mouse freeze and keyboard unresponsive.

Intel Core i5 3570K 3.4GHz LGA 1155 Processor Intel Core i5 3570K 3.4GHz LGA 1155
Gigabyte Z77X-UD3H
8GB Corsair DDR3 Vengeance

Using the onboard HD4000 GPU

[max (maxozilla)]

I've been having the same issue:

Intel® Core™ i5-3570K CPU @ 3.40GHz
MSI Z77A-G43
16GB RAM DDR3
Using onboard graphics

- The machine randomly freezes. It completely locks up, ie. keyboard cap locks indicator won't even change, mouse cursor won't move, screen is completely stuck.

I seemed to have fixed this problem by installing the Liquorix kernel - http://liquorix.net/
Unity is now a bit less responsive, but Gnome 3 is great. No freezes since using this new kernel.

So clearly there's an issue with the Ubuntu kernel.

[Hein (hhanssen)]

It doesn't seem to be related to the Atheros Network Adaptor as I suggested before. Though my system becomes more stable not using wireless networking it seems to be a problem caused by system load/ screen refresh. As soon as I start a video in Totem my system hangs after not more than a couple of minutes. Moving the Totem window when playing video even seems to invoke a system hang.

Some of you solved it apparantly by using a different kernel. But when willl we get a real solution/ fix for Ubuntu? This bug still doesn't have any importance, nor has it been assigned to someone. Bug fixing seems to become 'Redmondish' in Ubuntu these days. Or perhaps we must wait for the next kernel-update and hope our problem will be solved??!

[Michael (starkpc)]

For all "Intel Ivy Bridge" user (Intel i5-3570K, HD Graphics 4000)
Unity 3D (Compiz) and Gnome-Shell (Mutter) will crash!

Only 2D Desktop (Unity-2D, ) runs stable.
(KWIN not tested!)

Maybe it's time for a new bug report?
All Systems with integrated Intel HD Graphics 4000 randomly freezes in 3D-Desktop (unity, gnome-shell).
The machine freezes completely, no mouse or keyboard response. no chance to switch tty1, tty2 ... Magic SysRq also not working... the machine is completely death.

Affected systems:

Michael (starkpc)
Intel Core i5 3570K 3.4GHz
Gigabyte Z77M-D3H

ramayer (rm-ubuntu)
Intel Core i5 3570K 3.4GHz
ASUS P8Z77-V

Cloudsheen (bensharman)
Intel Core i5 3570K 3.4GHz
Gigabyte Z77X-UD3H

max (maxozilla)
Intel Core i5 3570K 3.4GHz
MSI Z77A-G43

[Stef Sijben (stef-sijben)]

I also have an Intel Core i5 3570K on an ASUS P8H77-V motherboard and have the same issue. Sometimes I can work for several hours before it crashes, but often it hangs in a few minutes after logging in (with GNOME shell).

[Martin Polden (martin-polden)]

I'm experiencing the same issue on Ubuntu 12.04 LTS, running Unity 3D and the onboard Ivy Bridge GPU (Intel HD 4000).
Symptoms: Desktop freezes, no response from mouse or keyboard, can't change TTY, Magic SysRq not working. Complete freeze.

Affected system:
Intel Core i7 3770K 3.5 GHz
Asus P8Z77-V Deluxe

[freeman70 (sdoell)]

I am also experiencing random complete freezes on a fresh install of Ubuntu 12.04 LTS.

Ivy bridge 3570k 3.4 GHz
MSI Z77A-G45
16 GB DDR3-1600y
240 GB SanDisk Extreme SSD
2 TB Hitachi Hard Disk
Onboard HD4000 Graphics

Unity-3D, Unity-2D, Gnome-shell, and Gnome classic with effects all randomly freeze the computer with no mouse movement possible. Forced reboot always ends up with a notification of it having to run in low graphics mode. I restart from terminal and then I get the standard login screen. Interestingly enough, I can run Gnome classic without effects and I haven't experience any random freezes as yet.

[zerod (zerod)]

Same issue for this config :
Ivy bridge 3570k 3.4 GHz
Asus P8Z77-V
8 Go RAM Corsair vengeance.

[Hein (hhanssen)]

Please don't forget to press 'this bug affects me'. Bug heat is already above 220, but still doesn't attract attention from developers and or Cannonical !!!!

I also have tried Unity2D: on my machine Unity 2D freezes immediately after the first mouse click!

[yostral (yostral)]

Total lock up here too. But happens sometimes during boot too ! I don't even have the time to access login screen. So I went back to 11.10.

I have tried 12.04 with update from 11.10, clean install, live on CD and USB key. Tried with Nouveau driver, with Nvidia driver. Tried Unity, Gnome Shell, Unity 2D... everything froze.

Core i7-720QM (Sandy Bridge)
Nvidia GTS 250M (GT215)
Toshiba Qosmio X-500

[Geoff Smith (taurusone)]

I am also experiencing quite a few random freezes at startup and other times. Using Gnome shell with fglrx driver NOT installed. Graphics card AMD Radeon HD 5770. Cursor still functions but that is all. Clean install of 12.04 64 bit.

[Hanine HAMZIOUI (hanynowsky)]

I noticed that using Chrome/Chromium along simultaneously with Firefox triggers the bug immediately or only 3 or 4 minutes later.
The Freeze occured frequently when I was interacting with Flash/HTML5 resources in Chrome/Chromium.
I had this Freeze about 15 times now. COMPLETE FREEZE.

I doubt it's Xorg or Compiz. Sounds like a Kernel/Unity communication issue to me.
Someone above reported that the issue is also present on Mint Linux and Debian. True?

----------------
Sandy Bridge i7 2670QM. AMD64.

-------------------------
:~$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 003 Device 002: ID 0603:00f2 Novatek Microelectronics Corp.
Bus 004 Device 002: ID 1058:0730 Western Digital Technologies, Inc.
Bus 001 Device 003: ID 0408:2fb1 Quanta Computer, Inc.
Bus 002 Device 003: ID 046d:c063 Logitech, Inc. DELL Laser Mouse
-------------------------------
:~$ lspci
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b5)
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b5)
00:1c.4 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 (rev b5)
00:1c.5 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 6 (rev b5)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation HM67 Express Chipset Family LPC Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 05)
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
01:00.0 VGA compatible controller: NVIDIA Corporation GF108 [GeForce GT 540M] (rev ff)
03:00.0 Network controller: Intel Corporation Centrino Wireless-N 1000
04:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04)
06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RT...

[Michael (starkpc)]

@ Geoff Smith (taurusone)
this is another, very similar bug, in your case "only" X (graphic environment) freezes.
in other cases, the entire system freezes, no response from mouse or keyboard...

i have entire system freezes in KDE (kwin), Unity (Compiz), Gnome (Mutter).
unity-2d works fine... probable all desktops without 3D effects...

perhaps a bug in 3D driver mesa?

[Anthony PERRIN (anthony-perrin54)]

I recently installed newly released ubuntu 12.04 LTS 64 bit version on my desktop. And it is frequently freezing (one or two time per hour) during browsing (flash ?). Freeze is complete and CTRL + ALT + F1 doesn't work. Perhaps a kernel freeze ?

I am using on board graphics and do not have any graphics card installed.

Below is my hardware configuration:
Processor: Intel CORE i5 3450S processor (2nd generation)
Board: MSI H77MA-G43
Ram: 8GB
Graphics: On board
/ mount on SSD M4 crucial 2.5" 128 Go
/home on HDD SATA1 160 Go

no swap defined.

For me it'a a highly critical issue.

Thanks
  Anthony

[Geoff Smith (taurusone)]

@ Michael (starkpc)
My apology Michael, I should have read the posts a little more carefully. Additional to my post #80 I would like to add that I do have access to keyboard so am able to peform REISUB. There looks like there may be the need for several bug reports from the posts here. I do not have skill to report bug but will continue to browse Launchpad looking for the posting of a separate bug.

[M (mzmcgrat)]

I haven't found a bug report for this issue involving a 32-bit 12.04 installation, but otherwise I have the same problem as the rest of the people here: complete/hard freeze with no mouse movement, tty console, or ability to SSH into machine.

System configuration:
Intel Ivy Bridge i5 3570k 3.4 Ghz
Gigabyte GA-H77M-D3H motherboard
4GB GSkill RAM
Using onboard Intel HD4000 graphics.

Problem persists with regular Unity and Unity 2D desktop.
Problem does NOT occurr when using old Nvidia 8400GS discrete graphics card.

Freeze can be reproduced with Firefox browser spending a couple minutes spinning ships here: http://www.eveonline.com/universe/spaceships/

Finding this bug saved me from RMA-ing brand new hardware.

[Michael (starkpc)]

interesting sentence on intels graphics website:

http://intellinuxgraphics.org/2012.02.html

Additionally, the following stability patches are currently available in the drm-intel-fixes branch and should be available on the stable 3.2.x kernel after this release:

Stability fixes for hard hangs on Ivy Bridge platform: those patches fix occasional hard-hangs on Ivy Bridge platforms when running GL workloads: patch 1, patch 2, patch 3, patch 4.

perhaps ubuntu is missing these fixes...

[freeman70 (sdoell)]

I hope they can get to work on it. I think 12.04 LTS is great but there is no point in upgrading if a bug like this makes it unusable.

[Nathan Miller (fractalid)]

I had this problem - the hard freeze version. 3570k processor as well. Installing version 2.19.0 of the intel video driver seems to have fixed it.

[ramayer (rm-ubuntu)]

Underclocking and over-cooling my 3570k led to a system (described about in a "me too" post) which has been stable for many hours now.

Starting to worry that it might be a hardware issue in the GPU part of the chip that's triggered by Unity3D.

[Trevor Bradley (ck-trevor)]

Note that nvidia-current was just upgraded to 295.53... that might effect stability for some people.

I've been running with 295.49 for several days now on both my systems and saw a marked improvement in stability - no load spikes, occasional Firefox freezing but nothing serious. I suspect there are a good 3 major issues causing similar symptoms for many, I'm glad the nvidia driver upgrade fixed my variant of problems.

[Michael (starkpc)]

Very good news for Intel Ivy Bridge (i5-3570K, etc.) users!

It's a Kernel Bug (drm-intel).

Install Linux 3.3.6 and the system runs stable :-))

Link: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.3.6-precise/

Download this files in a folder:
linux-headers-3.3.6-030306-generic_3.3.6-030306.201205121335_amd64.deb
linux-headers-3.3.6-030306_3.3.6-030306.201205121335_all.deb
linux-image-3.3.6-030306-generic_3.3.6-030306.201205121335_amd64.deb

Start the Terminal, go to your download folder and type this:
dpkg -i *.deb

[Kevin LeBlanc (leblanc-kevin-u)]

I've had the same problems with Ubuntu 12.04 as well as Kubuntu 12.04. Screen would randomly freeze, particularly while watching a video. Pointer completely unable to move, and if audio is playing, it skips like a scratched record. At first I thought it might have been instability with the newest version of KDE, but when it happened with mainline Ubuntu, I realized that it was most likely the kernel.

Using a Dell Latitude D620, onboard Intel graphics, Intel Core 2 processor, 3 GB RAM, onboard Sigmatel sound.

[Istvan Bartkowiak (bartkowi-3)]

Same behavior on my system, hard freeze: no responsive mouse, no responsive keyboard, no responses on pings sent by another machine to the effected one. In some cases the machine crashed immediately after login while building the dash. Unity 3D is unusable, Unity 2D work fine, expect of Firefox (stuttering while scrolling).

System specifics:
* Intel Core i5-3570K
* Intel DH77EB
* ADATA 8 GB DDR3-1333
* HyperX SSD 120 GB

@#91: Nice to know, but not an option. The main advantage of Precise is the long term support of kernel 3.2. Patches from 3.3 should be backported to 3.2 as fast as possible. Does anybody know if the graphics driver “Intel 10.02” has been already integrated in 3.2?

[Michael (starkpc)]

@#93
I hope the kernel team backport the fixes in linux 3.3 to linux 3.2.
But in the meantime, I recommend using linux 3.3.6.
(ubuntu 12.04 uses all components from the "Intel 12.02 graphics package".)

[Gino (ziconic)]

@#88
Which PPA source do you use to install 2.19.0? Use ppa:glasen/intel-driver ?
This PPA xserver-xorg-video-intel 2.19.0~precise~ppa1 package description told: This package provides the driver for the Intel i8xx and i9xx family of chipsets, including i810, i815, i830, i845, i855, i865, i915, i945 and i965 series chips.
So I think this package isn't for i5 cpu, how about your system after installed this package now? Not freeze again?

If you don't use this ppa, please tell me how to install xserver-xorg-video-intel 2.19 for i5 cpu

I got this same problem too, hard freeze, can't move mouse, noly press power button 7 sec to restart my system.
Thinkpad x220
cpu: i5 2520M (Sandy Bridge)
video card: 2nd Generation Core Processor Family Integrated Graphics Controller

[Michael (starkpc)]

@ #95
you need linux 3.3.6 ;-)
howto: #91

"xserver-xorg-video-intel 2.19.0-0ubuntu1~xup1" from "ppa:ubuntu-x-swat/x-updates" does not solve the hard freeze problem!

[Gino (ziconic)]

@#96
Thank you Michael ! I see...
I will install linux kernel 3.3.6

[Edgar (edgar-nl)]

We have 14 computers with the exact same config working perfect!
(Some with Windows XP, some with Ubuntu 10.04 / 11.04 or 11.10)
Two computers did have a complete fresh install of Ubuntu 12.04 LTS 64bit.
Since than complete Lockups about once or twice a day with the 12.04 systems.
Even ping or ssh from another machine does not work anymore...

I installed the (default) noveau driver and didn't try (yet!) Unity 2D.
Extra info:

- Intel Core i3 550
- VGA compatible controller: NVIDIA Corporation Device 0ca5 (rev a2)
- Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)

Everytime a Lockup occures the syslog tells: "kernel: [ 2997.449936] [drm] nouveau 0000:01:00.0: vm flush timeout: engine 0"

[Michael (starkpc)]

@ #98
the nvidia driver from here:
ppa:ubuntu-x-swat/x-updates
should work.

or perhaps the newest stable kernel 3.3.6

Since DRM (Direct Rendering Manager) is in mainline, linux machines freezes a lot more :-)

[Hein (hhanssen)]

Installed kernel 3.3.6 as suggested and now my system seems more stable. Until now no lock ups. For those who are still suffering from this bug, please try this. Comment #91 is the way to do it. Oh yeah of course the command 'dpkg' needs to be sudo dpkg.

The only thing Ubuntu 12.04 still does is a present me with screen flickering sometimes, but that's probably some other bug.

Shouldn't we change this bug? It is not related to the X-org package, but I think we found out it's a problem in the current kernel. How can we reach the kernel developers? Although kernel 3.3.6 solves the problem we need someone to backport the fix, I think.

[Hanine HAMZIOUI (hanynowsky)]

Awaiting the Backport.

My Machine has just frozen at exactly : 19h46. (I was working on Firefox, while Chromium open)
after rebooting here is the output of the System log file:

May 18 19:40:51 L502X dhclient: bound to 192.168.51.10 -- renewal in 128 seconds.
May 18 19:42:00 L502X kernel: [12956.377297] type=1400 audit(1337362920.367:85): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/etc/udev/udev.conf" pid=1695 comm="GoogleTalkPlugi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 18 19:42:00 L502X kernel: [12956.395868] type=1400 audit(1337362920.383:86): apparmor="DENIED" operation="exec" parent=1699 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/usr/bin/lsb_release" pid=1700 comm="sh" requested_mask="x" denied_mask="x" fsuid=1000 ouid=0
May 18 19:42:00 L502X kernel: [12956.435174] type=1400 audit(1337362920.423:87): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/dev/video0" pid=1695 comm="GoogleTalkPlugi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 18 19:42:00 L502X kernel: [12956.503071] type=1400 audit(1337362920.491:88): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/dev/video0" pid=1695 comm="GoogleTalkPlugi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 18 19:42:00 L502X kernel: [12956.504718] type=1400 audit(1337362920.495:89): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/dev/video0" pid=1695 comm="GoogleTalkPlugi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 18 19:42:00 L502X kernel: [12956.504904] type=1400 audit(1337362920.495:90): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/dev/video0" pid=1695 comm="GoogleTalkPlugi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 18 19:42:02 L502X kernel: [12958.489950] type=1400 audit(1337362922.483:91): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/dev/video0" pid=1695 comm="GoogleTalkPlugi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 18 19:42:02 L502X kernel: [12958.490022] type=1400 audit(1337362922.483:92): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/dev/video0" pid=1695 comm="GoogleTalkPlugi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 18 19:42:02 L502X kernel: [12958.490430] type=1400 audit(1337362922.483:93): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/dev/video0" pid=1695 comm="GoogleTalkPlugi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 18 19:42:59 L502X dhclient: DHCPREQUEST of 192.168.51.10 on eth0 to 192.168.51.254 port 67
May 18 19:42:59 L502X dhclient: DHCPACK of 192.168.51.10 from 192.168.51.254
May 18 19:42:59 L502X dhclient: bound to 192.168.51.10 -- renewal in 136 seconds.
May 18 19:45:01 L502X CRON[1892]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
May 18 19:45:15 L502X dhclient: DHCPREQUEST of 192.168.51.10 on eth0 to 192.168.51.254 port 6...

[Hein (hhanssen)]

Tried / tested kernel 3.3.6. Worked better, but I still get freezes. I'm back to 11.10 on my laptop. 12.04 is still unusable even with kernel 3.3.6. I can still hang my system by playing a video with Totem and scrolling through photos with Shotwell.

[ramayer (rm-ubuntu)]

@#91
@#93

If you need 3.2 kernel Ubuntu .deb files with those patches, they're available here:

http://people.canonical.com/~ogasawara/eugeni/rc6/

For more info:

http://lists.freedesktop.org/archives/intel-gfx/2012-February/015029.html

Testing them and 3.3 that Michael (starkpc) mentioned now.... really really hope this works -- Unity-3D hangs really badly without them.

[Michael (starkpc)]

@ #103
with linux 3.3.6 my system (Intel i5 3570K, Gigabyte Z77M-D3H) runs completely stable.
I will for now stick with linux 3.3.6
The linux 3.2 series gives me bad memories :-)

[Darren Wilkinson (darrenjwilkinson)]

This affects me too. Complete lock up on 64bit since upgrading to 12.04. Can't even SSH in remotely. Power cycle only option. Dell Precision M4500, i7 quad core, Nvidia graphics. Have upgraded several other (32bit) machines without any problems.

[Thierry Daucourt (thierry-daucourt)]

I've installed the 3.3.6 kernel, but still get the freeze as soon as I've been logged in.
With keyboard, I can only do Ctrl+Alt+F2
With mouse, I can only move (no click)
I've switch to other linux distribution to be able to read my emails/browse/etc...

[arielez (arielez01)]

Seeing same behavior on two machines.
One is a complete new reinstall to 12.04 (was 11.04 before) using PS/2 mouse (through a PS/2 KVM)
The other system is an upgrade from 11.10, and is using a USB mouse.
Mouse simply freezes for 1-3 seconds once in a while (every 10-15 minutes on first machine, and on longer more random intervals on second machine).
Before Ubuntu 12.04 x64 both machines worked flawlessly with older versions of Ubuntu (also x64).

The one with the USB mouse reports in dmesg:
[278872.212364] usb 2-1.4: reset low-speed USB device number 3 using ehci_hcd
after every freeze (but to reiterate - the mouse worked perfectly in 11.10 before the upgrade and the system never froze).

[Michael (starkpc)]

@ #106
you are affected by another bug.
your system is not affected by the "hard freeze" problem, because you can still use your mouse and keyboard ;-)
let me guess, nvidia graphics? try #99

the #91 "linux 3.3.6 solution" is for Intel HD Graphics 2000, 2500, 3000 and 4000 (Ivy Bridge and Sandy Bridge ).

[yostral (yostral)]

@ #108
"the #91 "linux 3.3.6 solution" is for Intel HD Graphics 2000, 2500, 3000 and 4000 (Ivy Bridge and Sandy Bridge )."
And for non Intel HD Graphics hard lock, any other idea ?

I have a Sandy Bridge (Core i7-720QM) with only a Geforce (GTS 250M), and I have permanent freezes too. I haven't tried 3.3.6 kernel because I don't have Ubuntu 12.04 installed anymore.

I tried to reinstall it, but each time it freezes before the end of installation... When I could launch the installation !

[Thierry Daucourt (thierry-daucourt)]

@#108, I've tried to follow instructions in #99, that is adding ppa:ubuntu-x-swat/x-updates. Only one package was updated : xserver-xorg-video-intel. Still freezing.
I also tried to install fglrx that are proprietary drivers. Still freezing, both with kernel 3.2.0.24 and kernel 3.3.6.
Now system looks more broken as message are over written during boot screens

My mobo is GA-MA78G-DS3H, AMD 4850e, with integrated RS780 [Radeon HD 3200] from ATI Technologies Inc
System is Ubuntu 12.04, only usable via Ctrl-Alt-F2 console.

And no, I do not want to convert to lynx and mutt.

[Brendan Brigham (brigham)]

About the kernel fix in #91, by looking at the names aren't those particular ones targeted for AMD ? Per the "amd64.deb" in the name ?
I need to do something, this is getting ridiculous, it's not freezing right now only cause I'm stuck in 2d, won't even start 3d :-/
Then I will still have the Nvidia driver issue to straighten out so I can use xscreen and still have both monitors usable.

[Michael (starkpc)]

@ #110
okay, we have 2 bugs in 1 bug report :-)

1. Bug: Systems with Intel's Ivy Bridge and Sandy Bridge HD Graphics completely freezes (keyboard and mouse are not responsive!)

Solution: #91

2. Bug: Systems with NVIDIA- or AMD/ATi- Graphics "only" the xsession freezes (console access via CTRL+ALT+F1, etc. is possible. So please check your log files: egrep "EE|WW" /var/log/Xorg.0.log , tail /var/log/syslog , etc.)

Solution for NVIDIA: disable nouveau and install nvidia driver version 295.53-0ubuntu1~precise~xup1 from here:
https://launchpad.net/~ubuntu-x-swat/+archive/x-updates?field.series_filter=precise

Solution for AMD: #110 sry ;-)

@ #111
amd64 = 64 Bit
i386 = 32 Bit

[Anthony PERRIN (anthony-perrin54)]

For me (complete freeze) will be solved by the solution of #103

[Salomon van Huyssteen (salomonvh)]

I also get the complete system freeze, no mouse movement. Quite certain this is not an video driver error.

I will try solution mentioned in #91, but is there a way to increase the priority of this bug?

[freeman70 (sdoell)]

Using Ubuntu 12.04 LTS 64 bit and stock kernel 3.2.0.24 (i5-3570K, MSI Z77 MB). Had complete freezes with Gnome-shell, Unity 3D, Unity 2D, Gnome classic with effects. I had been running Gnome classic without effects for over a week with no problems but I just had my first complete system freeze editing an email with Thunderbird. So much for this LTS release. I am going to try the 3.2 patched kernel in post #103 and will post my findings. Problem with a bug like this is that you never really know if your machine is really running stable. I thought I could get by with Gnome classic without effects but I now know different. It does seem to freeze less under simpler GUI.

By the way, I haven't downloaded the proposed backports but after enabling it in sources, I noticed there is a kernel update. After reading the description, I found no references to our particular bug in the update description so I decided to try the #103 patch and wait for an official update instead.

For the inexperienced, updating the kernel can seem complicated and dangerous but correct me if I am wrong, with Linux, you can run multiple kernels right from grub (Hence the need to purge kernels after a year of updates). It is one of the reasons why I like Linux. If an updated kernel is unstable or buggy, you can always revert back to the old one by selecting it in the grub menu at boot. The only real trouble arises when you use third party hardware drivers that patch the kernel. You sometimes have to install them for every kernel version you use.

[freeman70 (sdoell)]

Used patched kernel 3.2.5 in post #103. Still freezes completely with gnome classic with effects on i5-3570k, z77 mb combo. Played openarena for an hour or so, surfed the web, then shut down no problem. Booted system 7 hours later and it locked up a few minutes later while surfing the net. Going to try 3.3.6 since I have no other alternative. I love Ubuntu but this bug is getting on my nerves.

[Michael (starkpc)]

linux 3.4 also runs completely stable with my Intel i5-3570K CPU/GPU.

Link:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-precise/

Files:
linux-headers-3.4.0-030400-generic_3.4.0-030400.201205210521_amd64.deb
linux-headers-3.4.0-030400_3.4.0-030400.201205210521_all.deb
linux-image-3.4.0-030400-generic_3.4.0-030400.201205210521_amd64.deb

sudo dpkg -i *.deb

done.

[yorgasor (yorgasor)]

Rats, I got another total lockup, even using the 3.0 kernel from ubuntu 11.10. It did last 10 days before the system freeze though, so that was a big improvement over a freeze every day. I'm using xfce4 as my desktop.

[David Lowes (davidl-david)]

I wish to confirm that with me the freezes sometimes happen when watching videos. When this happens the cursor and keyboard respond. I am able to open a terminal window and type in it but no actions releated to the window manager such as moving windows or changing their size works. As soon as the video playback finishes the system becomes responsive again.

Linux LAP-DAVID 3.2.0-24-generic #37-Ubuntu SMP Wed Apr 25 08:43:22 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

[Micha (mibong)]

Frequent freezes here, too. Complete new install, Core i5-3550 Ivy Bridge, 16 GB RAM. Hard freezes, no more mouse pointer movement / no Ctrl-Alt console. Hardware / memory is ok (24 hrs memtest done). Using built in HD 2500 graphics.

With Kernel 3.3.6 (#91) still freezes, maybe less than before.

A god way to reproduce the bug is starting VirtualBox and trying to install a guest system. My system crashes every time. See #19, 66).

[Robert Loggs (mrbloggs)]

I'd just like to mention this isn't just specific to i3, i5, i7 Ivy/Sandybridge etc. I'm seeing this on a 3Ghz Pentium 4 system + nVidia.

Kernel 3.3.5 and 3.3.6 improved the problem no end but still getting hard freezes as per my comment #27 with Unity 3D.
NO freezing at all Unity 2D!

[Kwok Ho Yin (hykwok1)]

When I was using LibreOffice Writer to write some documents, sometimes the Desktop was frozen during page scrolling.

Then I tried to search the solution and found that Daniel van Vugt provided a script, dsctack, to collect some information:

https://bugs.launchpad.net/ubuntu/+source/compiz-plugins-main/+bug/815996

And the attachment is my system status during Desktop frozen.

I wish it can help someone to fix the bug

[freeman70 (sdoell)]

No freezes since May 21 using kernel 3.3.6 and Gnome Classic with effects on Ivy Bridge 3570K, MSI Z77MA-G45, 16 GB RAM. Thanks Michael (starkpc). Will try 3.4 as you have sometime later.

[Micha (mibong)]

> With Kernel 3.3.6 (#91) still freezes, maybe less than before.
>
> A good way to reproduce the bug is starting VirtualBox and trying to install a guest system.
> My system crashes every time. See #19, #66).

I just installed Debian 6.0.5 for testing purposes: Everything is perfekt!
No more freezes, VirtualBox works like a charm!

[shreyas moghe (shreyasmoghe)]

Same problem happened with me.
My PC Configuration

Ubuntu 12.10 64 bit
Processor : Intel i3 3.07GHz
Ram : 2GB
Onboard Graphics
No compiz installed\

------

It freezes when I start firefox and google chrome simultaneously.
Also appeared when any development editor like netbeans and rhythmbox running simultaneously

[Fredde (fredde-iki)]

I would like to add that it this hasn't happened once since I switched to Unity 2D last week (see #18).

I agree with those who find it remarkable that the Ubuntu developers with their usually prompt bugfixes can leave a bug like this unassigned for this long. It must affect thousands of people since it must be a pretty small percantage who bother to post a bug report. I would also vote for changing the importance to Critical since this bug freezes the whole system and requires a hard reboot.

[Kevin LeBlanc (leblanc-kevin-u)]

I agree Fredde. This felt like a "make it or break it" moment for Ubuntu, since it's received a great deal of positive attention lately from the mainstream press. Right now, it freezes worse for me than Windows XP ever did.

[openmissoula (mjewell)]

WTF? This is still unassigned? I would report the bug(s) to a package, but I can't figure out which package is best positioned to fix it.

Freezes are less frequent with 2d Ubuntu and fewer apps running. Running Lenovo E520 laptop with 64 bit 12.04 LTS Ubuntu. Ran well before upgrade to 12.04 LTS.

[Martin Polden (martin-polden)]

Strange that it's still unassigned seeing as this most likely affects all new Ivy Bridge-based laptops using integrated graphics. Certainly an unfortunate bug for a LTS release.

[Hein (hhanssen)]

@ openmissoula and Martin Polden.

I completely lost my faith in Ubuntu- bug fixing. I'm back running 11.10, but I'm seriously considering to switch to either another distro (Opensuse or Fedora perhaps) or even worse, back to Windows. Yes Windows! Windows 7 isn't bad at all: it does at least not crash several times a day like Ubuntu 12.04 now does and even my built in bluetooth would work on my laptop (something that Ubuntu fails to do even my laptop is almost 4 years old).

The bug is not only Ivy bridge related, but surely related to laptops with integrated graphics using shared memory. And there ought to be lots and lots of those systems out there. How many of us still run normal desktops? So there must be lots of users that have this problem or potential users that would run into trouble when trying Ubuntu 12.04. Very unfortunate while Ubuntu gets more and more (positive) reviews in the press. A big bug like this could kill Ubuntu! I can't see why no one seems to be interested in this bug at canonical? What's going on? Did they forget about stability and that with an LTS release?!!!

Bug heat is now over 400 and no one seems to bother(unassigned/ no importance set yet)! I even reported this to OMG-ubuntu and other Ubuntu friendly websites, but they even don't react! It seems the whole Ubuntu world is in denial mode somehow. Perhaps I should try ZD net?

For me it's clear now that fast bug fixing is also not happening in the Linux world, although many Linux users (including myself) used this as an argument against the Redmond OS, as well as it's stability. With 12.04 both doesn't seem to apply.

[Michael (starkpc)]

@ #130
you're right!
fortunately, my new system (Intel Core i5 3570K) runs stable with linux version 3.3.6 and 3.4 :-)

But I have another system with a NVIDIA GeForce 8200 mGPU and it freezes frequently :-(
Magic Sysrequest is working, but I can't even access tty1 :-(
linux 3.3.6, 3.3.7 and 3.4 does not help. I also tried the latest nvidia drivers :-(

these crashes make me crazy...

[Kevin LeBlanc (leblanc-kevin-u)]

@#130 (Hein)

I've switched back to PCLinuxOS and I haven't been happier, although I'm curious about openSuSE.

[Michael (starkpc)]

New Linux version 3.2.0-25.40 in proposed repo!

I will try this version, maybe it fixes the Ivy Bridge freezes...

https://launchpadlibrarian.net/105954516/linux_3.2.0-25.40pre201205240400_source.changes

   * drm/i915: handle input/output sdvo timings separately in mode_set
     - LP: #1002482
   * drm/i915: relative_constants_mode race fix
     - LP: #1002482
   * drm/i915: Force sync command ordering (Gen6+)
     - LP: #1002482
   * drm/i915: Set the Stencil Cache eviction policy to non-LRA mode.
     - LP: #1002482
   * drm/i915: fix integer overflow in i915_gem_execbuffer2()
     - LP: #1002482
   * drm/i915: fix integer overflow in i915_gem_do_execbuffer()
     - LP: #1002482

[Brendan Brigham (brigham)]

@ Hein...Another desktop user here, you're right, didn't know so many people are usin laptops. Mine is a Sandy Bridge i3 with Asus ENGT 240 (rebadged Nvidia) and the only way 12.04 runs without issue is in 2d. I really like Unity 3d but this is really irritating. If I didn't like Unity 3d so much I would certainly be outta here and looking for another distro. Then Nvidia's FUBAR drivers are another issue that pisses me off. I haven't tried the newer kernels yet cause I haven't found any concrete directions, don't want to screw this up much more. I already lost enough data and time.
It's funny, it seems all these reports are about Ivy Bridge and built in video, haven't seen much of Sandy Bridge and add on video. Must be the laptop thing lol.

[James Delmerico (jdelmerico)]

I'm also affected by a freezing bug. I'm using a Levono T510 laptop core i7 on 32bit Ubuntu 12.04. I upgraded from 11.10 which did not have the freezing problem.

[Michael (starkpc)]

bad news, the linux 3.2.0-25.40 from proposed repo does not solve the Ivy Bridge freezes problem!
I use again linux 3.4 from #117

[Hein (hhanssen)]

@ Michael. That would have been just luck as this bug is still not picked up actively. I think newer kernels solve the problem for some of us, just because some parts of the kernel are probably re-written, but that doesn't imply that these modifications were made for this specific bug.

I've sent an email directly to Mark Shuttleworth, well at least at his secretary: that's as direct as I know how to contact him. No one else seems to bother. Does any body know developer at Canonical who we might contact with this problem? Who is in charge of bugs at Canonical?

I still want to use Ubuntu and not switch to another distro. I like the general concept with the Ubuntu store, Ubuntu one and even Unity.

[Alfagulf (alfagulf)]

I am also facing this freezing problem especially when I start FlightGear.
My Hardware is a new Asus P8Z77-V LX mother board with Intel I7 3770K CPU + 16GB Ram. + Built-in HD4000 GPU.
I am using freshly installed 64bit Ubuntu 12.04

I have to press the hardware reset to reboot my computer it freeze.

This is my uname output:
Linux Asus 3.2.0-24-generic #39-Ubuntu SMP Mon May 21 16:52:17 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

@Michael, can you confirm if FlightGear does not freeze your computer after installing 3.4 kernel?

Thanks

[Alfagulf (alfagulf)]

Positive Update:

I just followed Michael advice and upgraded the kernel to 4.3 and now FlightGear does not freeze the computer any more :)

Thanks Michael.
AlfaGulf

[Alfagulf (alfagulf)]

Correction:
I mean ubuntu kernel 3.4

[Anthony PERRIN (anthony-perrin54)]

#113
Less freeze. But sometimes pc freeze with 3.2 kernel and core i5 3450s (ivy bridge).
I upgraded to the kernel 3.4 too. No freeze with 3.4 kernel but one (other) user lost unity session and retrieve the gnome session ....

[dz0ny (janez-troha)]

For me the solution was to reduce swappiness to 10. I'have 8GB of ram, after that no more freezes. Before xorg was eating about 4GB of ram and only way to diagnose after freeze was to SSH to machine or reset. Killing the xorg did nothing, also no crash logs nothing.

[Antonio Feitosa (teebsd)]

I have the same problem With Notebook Acer Aspire 5250-BZ673.

[yurx cherio (cherio)]

How come this bug is still "Unassigned". I am loosing my faith in Ubuntu. Ubuntu build quality has been declining. I started with 8.04 and every other update was regretful for me. 12.04 is the worst so far. I'll try 3.4 kernel but otherwise considering joining Fedora camp.

[Kai Nickel (0tlwui-post-kj985r)]

I used to have 1-10 freezes per day with a fresh install of Ubuntu 12.04 (64bit). My PC is an i7-3770 with HD4000 Intel graphics, 16GB RAM.
Now I replaced the Intel graphics with some old NVidia card, and the problem is gone.

[Hein (hhanssen)]

Integrated graphics seems to be the problem: this takes some of the main RAM memory and this somehow causes the problem. This seems to be confirmed by what Kai Nickel reports. After putting an old Nvidia card in his system the problem is gone. This is most surely a card that does not share memory but has it's own dedicated memory. Kai, can you confirm this?

The problem than still is, were exactly the bug is situated. Many (but not all) seem to find a (partial) solution by installing a newer kernel, others seem to find a solution with a different Nvidia driver (of course the latter only applies to those using Nvidia cards).

However this is still a very serious problem as all newer low and mid end desktops and laptops come with integrated graphics these days. It is very hard to believe that no one at Canonical noticed this bug until now. Bug still unassigned. Bug heat already 560: more than twice the number of a security related bug, yet no one seems to bother. Weird, and of course not very healthy for Ubuntu. @ Yurx Cherio: I share you thoughts. Let us know if kernel 3.4 brought the solution for you.

I have an acer 7520 laptop with 2 Gig of Ram, Geforce 8400M with AMD Turion64 X2: an older system, but until version 12.04 without (serious) problems. For my installing a newer kernel did not solve the problem: my system became a bit more stable, but still not workable, still hanging at least once an hour. Before installing a newer kernel after 10 minutes the show was over! Now back with 11.10 and waiting for a solution before upgrading.

[Hanine HAMZIOUI (hanynowsky)]

I still did not install any other kernel, yet I encountered no freeze since 3 days ago and this since the moment I updated to (Build 39) :
3.2.0-24-generic #39-Ubuntu SMP Mon May 21 16:52:17 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
----------------------------------------------------------------------------------------
What a weird bug.
The fact that Canonical is dead silent about this bug stipulates it's a deadly bug none wants to get involved with.
I guess WAYLAND's arrival is needed. X is getting bloated and complicated to handle.

[Thierry Daucourt (thierry-daucourt)]

@ #144, I too lost my faith in Ubuntu. Every upgrade there is a new worse problem. I've tried installing new drivers or new kernels. PC is only usable via Ctrl+Alt+F2. I definitely switched to debian stable since one week. I realized with this bug that stability and ability to work is more important than getting the last fancy things.
Bye bye Ubuntu. Thank you anyway to made me switch to linux and open source.

[Matthew Swift (matthew.swift)]

Here's yet another set of data to add to the bug:

I fall into the category of people experiencing regular desktop freezes (every few minutes) but mouse can still be moved and I am still able to switch to a TTY console. However, I am currently using Linux Mint 13 (so not Unity based, but very closely derived from Ubuntu 12.04) on Intel Sandy Bridge (quad core i7-2720QM), integrated graphics and nVidia Corporation GF108 [Quadro NVS 4200M], and I am *not* using the proprietary Nvidia drivers.

There does not seem to be anything in the logs (syslog, kern.log, nor X logs) that provides any hints as to what's going on. I was previously running Ubuntu 11.10 and Linux Mint 12 with no problems and with both ASPM and RC6 enabled (i915.i915_enable_rc6=1 and pcie_aspm=force), so it is less likely that the ASPM/RC6 related changes in Ubuntu 12.04 kernels could be the cause.

Perhaps people using Ivy Bridge get a hard freeze, but people using Sandy Bridge get just an X freeze?

I can help debug this if anyone from Canonical is interested. I can grab stacktraces, strace, etc if needed, just need to know which processes to look at.

[Kai Nickel (0tlwui-post-kj985r)]

#146: Yes, the NVidia card has its own dedicated memory, and still runs without problems (nouveau driver).

[Alfagulf (alfagulf)]

Negative update:
Today as I was watching a youtube video http://www.youtube.com/watch?NR=1&feature=fvwp&v=oGN35BeYkeE and at about the end of the video my gnome-shell froze, but unlike previously this time I am able to switch to terminal (CRTL+ALT+F1) and restart gnome by typing:
sudo service lightdm restart

Notice that this happens with ubuntu 64 kernel 3.4. I7 3770K + HD4000 +16GB Ram.

I'll be installing an ATI Radeon 5770 graphic card soon, and I shall report of how it works.

Does any one knows if other linux distributions are facing the same freezing problem?

Thanks
Alfagulf

[Alfagulf (alfagulf)]

Where is the fix?!!

[Hein (hhanssen)]

Huh. Fix released???? What fix Florin???? Is this a joke? I hope not. Please be specific what has been fixed and how? Is there an update available?

To all others here: if there is indeed a fix - confirm if it works or not! I would very much like to upgrade to 12.04 from 11.10 (again) but I don't want bad surprises.

[Michael (starkpc)]

There is no fix.
For Intel Ivy Bridge systems, Linux 3.2 is the problem!

Fix:
#91
#117 (preferred)

For AMD (radeon) and NVIDIA (nouveau) I have no idea...
see #131

[Brendan Brigham (brigham)]

@ Michael...I'm looking at the fix in #117 again. The i386.deb version that I would need are a little confusing to me, this is the first I've had to get into this stuff in Linux. There is...
linux-header..........generic-pae.....i386
linux-header..........generic.....i386
linux-image............generic-pae i386
linux-image............generic......i386
     and there's also
linix-header...............all.deb

Which of those do I need ? All of them ? I would like to resolve this stuck in 2d mode BS.

As for NVIDIA problems, I would suspect we have to wait for NVIDIA to get off their duffs to get it fixed as it's their driver issues. I have tried all of their latest drivers with no resolve to the multiple monitor support. I haven't had any problems using the Nouveau drivers but I would rather be able to monitor my graphics card temps and such through NVIDIA.

[Michael (starkpc)]

@ #155

without pae (Physical Address Extension)

linux-headers-3.4.0-030400-generic_3.4.0-030400.201205210521_i386.deb
linux-headers-3.4.0-030400_3.4.0-030400.201205210521_all.deb
linux-image-3.4.0-030400-generic_3.4.0-030400.201205210521_i386.deb

[Hein (hhanssen)]

@ # 154 Michael. That's exactly what I meant. Why does Florin change the status immediately to 'fix released'???? By doing so we will not see a real fix soon.

And I have that 'nice' 8400m GPU from Nvidia as well as you mentioned before. So no fix for me then?! My system also froze completely, without being able to switch to a console. Only the mouse pointer was still moving, and some processes like copying files still ran, without showing any output on the screen.

It seems though that we are dealing with a combination of bugs / packages involved. I'm not seeing a quick fix.

[Brendan Brigham (brigham)]

Thanks Michael, much appreciated ;-)

[Hanine HAMZIOUI (hanynowsky)]

Could someone confirm whether he/she still encounter the complete freeze (not the xorg freeze) with these specs:

- Laptop with Sandy Bridge and integrated HD 3000 Intel graphics.
- Arch: 64bits (AMD64).
-Ubuntu kernel : #39: 3.2.0-24-generic #39-Ubuntu SMP Mon May 21 16:52:17 UTC 2012 x86_64 x86_64 x86_64
- Shell: Unity 3D

? Thanks

[Brendan Brigham (brigham)]

One last question lol. With the command "sudo dpkg -i *.deb", I replace the "*" with the file name ?

[Michael (starkpc)]

@ #160
"*" means install all .deb files.

#159
slightly different specs:
- system: Ivy Bridge (Intel Core i5-3570K) integrated HD Graphics 4000
- arch: x86_64
- desktop: unity 5.12-0ubuntu1.1
- linux: 3.2.0-24.39 - updates (main) = complete freeze
- linux: 3.2.0-25.40 - proposed (main) = complete freeze
- linux: 3.3.6-030306-generic - mainline = stable
- linux: 3.4.0-030400-generic - mainline = stable

[Micha B (micha-ubuntu)]

Messagen sent to "status: Confirmed → Fix Released " florin (floryn-todor).

[Micha B (micha-ubuntu)]

""florin is not an active member of any Launchpad teams. " ???

[Brendan Brigham (brigham)]

Unfortunately the kernel in #117 is a no go for me. I installed it, was watching an HD video and installed Compiz Setting Manager. When I was looking through Compiz it hard froze. So....I'm back to 2d :(
Just for reference, my system...
Sandy Bridge i3
MSI H55M-E33 mobo
4gigs ddr3 ram
Asus ENGT 240 graphics card using Nouveau drivers into duel 19" monitors

[florin (floryn-todor)]

this fix seams to solve problems: https://bugs.freedesktop.org/show_bug.cgi?id=47535#c10
(I have Intel Core i5-2400 CPU (Sandy Bridge) processor with GPU and no other graphic card)

Anyway I reinstall the 12.04 from scratch and after I applied all available updates (still on kernel 3.2.0.24) I put the line
sudo intel_reg_write 0x2120 '0x1206800'
in /etc/rc.local.
After that (for 3 or 4 days now) I don't have any freeze, and even Google Earth work OK.

PS

I don't know if this is important but in Compiz (CCSM) under OpenGL I unchecked "Sync To VBlank" also.

[Michael (starkpc)]

#164
Unfortunately, it does not help. ( see #131 :-)

For nouveau or nvidia freezes linux 3.3.6, 3.3.7 and 3.4 does not help.

maybe the latest xorg-server + mesa + xserver-xorg-video-nouveau from ppa:xorg-edgers/ppa.

[Michael (starkpc)]

@#165
check comment #133 and #136

[yostral (yostral)]

Sorry not to follow your theory, but I have a Sandy Bridge with dedicated CG and memory and I have hard freezes. So I'm not really sure it's linked to integrated graphics.

[Kai Nickel (0tlwui-post-kj985r)]

#165: This bug is not fixed, it should be re-opened again.

I am using the current proposed Kernel, and I still have hard freezes on Ivy Bridge graphics:
3.2.0-25-generic #40-Ubuntu SMP Wed May 23 20:30:51 UTC 2012 x86_64

Please note that in my case (and others) there is no kernel error logging in dmesg or anywhere, because the system is plain dead. This makes me think that freedesktop bug 47535 is something different.

[yurx cherio (cherio)]

After upgrading to 3.3.7 and updating nvidia libraries from https://launchpad.net/~ubuntu-x-swat/+archive/x-updates everything seems back to normal. I didn't try 3.4 as it produced a few errors (related to nvidia) during install and I didn't take chances and immediately uninstalled it.

So for me teh solution was #91 + ubuntu-x-swat update.

I have GeForce GT 220

[Edgar (edgar-nl)]

It's also NOT a fix for our Shuttle's SH55J2 with an Intel Core i3 550 and !!! GeForce GT 220 1GB !!!
(we do NOT use the internal graphic card of the shuttle...)

[Fredde (fredde-iki)]

Tried the 3D desktop again after using Ubintu 2D for a couple weeks, when this bug got the"Fix released"-status. It hasn't crashed yet, but something has changed, because now the graphics response is really slow, windows lag while moving them, and even typing is slow. The computer is not overheating, there are no big processes running. (See my specs in #18).

Sigh, back to 2D it is.

[Dmitry Koroliov (d-koroliov)]

I have the same issue. My system is:
Ubuntu x64 12.04
Kernel Linux 3.2.0-24-generic
GNOME 3.4.1

Intel® Core™ i7-3770K CPU @ 3.50GHz × 8
16gb ram

Monitors:
samsung 2493hm, HP ZR24w

It seems to me that it is somehow related to Intel video

[Fredde (fredde-iki)]

Like to add that kernel 3.3 does not seem to be compatible with virtualbox (which I need for my work) so the kernel upgrade "fix" is out of the question.

[Michael (starkpc)]

@ #173
Install linux 3.4, see comment #117
with linux 3.3.6 or 3.4 my Ivy Bridge system runs stable.

@ #174
Virtualbox runs fine with linux 3.3.x or 3.4.
you need both linux-headers files ;-)

[Fredde (fredde-iki)]

Sorry, I was wrong in comment #174. virtualbox does work with kernel 3.3.

[Micha (mibong)]

@Fredde / #174: Virtualbox is running here stable w kernel 3.3 (#91) after enabling VT-x in BIOS / EFI. Without VT-x, Virtualbox reboots the server when installing / starting a guest system.

[Michael (starkpc)]

Summary:

- Intel HD Graphics 2500, 4000 (Ivy Bridge) need Linux 3.3 or 3.4 for stability
- Intel HD Graphics 2000, 3000 (Sandy Bridge) need Linux 3.3 or 3.4 [*] for stability
- NVIDIA maybe "ppa:xorg-edgers/ppa" can help
- AMD maybe "ppa:xorg-edgers/ppa" can help

[*] maybe Linux 3.2.0-25.40 also, see comment #133

[Micha (mibong)]

@Michael / #178:

Ok, but that's no "LTS solution" so far if I'm right? These kernels are "snapshots" without support / online updates.

I'll try the #165 solution
"sudo intel_reg_write 0x2120 '0x1206800'"
this evening with original 3.2 kernel.

[Michael (starkpc)]

@ #179
I know, but in the meantime you have no other choice (if you want to stay with ubuntu :-)
The #165 solution does not help, because you have a Ivy Bridge system (see #133 and #136).
The Patch from #165 is already in Linux 3.2.0-25.40 (proposed repo).

[Alfagulf (alfagulf)]

I tried virtualbox on kernel 3.4 and I got an error message that say's I have to run the following:
                        sudo /etc/init.d/vboxdrv setup

After doing so I got the following:

* Stopping VirtualBox kernel modules [ OK ]
 * Uninstalling old VirtualBox DKMS kernel modules [ OK ]
 * Trying to register the VirtualBox kernel modules using DKMS
 * Failed, trying without DKMS
 * Recompiling VirtualBox kernel modules [ OK ]
 * Starting VirtualBox kernel modules [ OK ]

Virtualbox is now working fine.

[Alfagulf (alfagulf)]

Virtualbox follow-up:

Although Virtualbox worked, I got a problem when I increased the number of CPUs to 2 in my virtual machines.
I got the following error message:

Failed to open a session for the virtual machine Mint. VT-x features locked or unavailable in MSR. (VERR_VMX_MSR_LOCKED_OR_DISABLED).

After some search, I came to know that I need to enable virtualization in my motherboard BIOS.
After doing so, I got another error message instructing me to do the following:

           sudo /etc/init.d/vboxdrv setup

I did that and now Virtualbox is running my virtual machine on multi-processors.

Again: I am using Asus P8Z77-V LX motherboard with I7 3770K + 16GB Ram + HD 4000 GPU on Ubuntu 64
uname -a result:
Linux Asus 3.4.0-030400-generic #201205210521 SMP Mon May 21 09:22:02 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

BTW: Could it be the freezing problem is due to turning virtualiztion OFF in the BIOS ?

[Alfagulf (alfagulf)]

In my previous post , I asked:
 Could it be the freezing problem is due to turning virtualiztion OFF in the BIOS ?

The answer to my question is that virtualization setting in the BIOS does not affect the freezing problem in kernel 3.2.

Florin:
I also tried setting Intel Register 0x2120 but it seems such register does not exist as shown below:

Asus:~$ sudo intel_reg_write 0x2120 '0x1206800'
[sudo] password for alfagulf:
Value before: 0x0
Value after: 0x0

Would those of you who have I7 3770K try the above command and let us know what they get?

So for me, kernel 3.4 solved the problem of complete freezing (ie. not even console) but did not solve the problem of intermittent Gnome-Shell hangging.

I hope that Florin (or whoever has the permission) change the state of this bug to reflect what we are experiencing.
Thanks

[yurx cherio (cherio)]

I was wrong. Upgrading to 3.3.7 DIDN'T fixed it for me. Another freeze. Coincidentally I was using VirtualBox at that time.

It looks to me like an IO lock-up. I noticed that it doesn't freeze completely immediately. It takes a few minutes before the total freeze. For some time the exiting windows partially work but network connectivity disappears (existing SSH connections stay fine), IO Wait consumes most of cores, no application can be launched or normally closed, compiz takes about 50% of one core. It very much sounds like some sort of IO lock.

[yurx cherio (cherio)]

The problem seems to be with Unity 3D.

I run XFCE at the office and it doesn't freeze. The one at home runs Unity 3D + compiz and it keeps freezing. Both computers have very similar hardware, i7, nVidia, RAID0, etc.

I just can't accept that the LTS release quality is so low. I wonder how stable 12.10 will be? Should I bail now or wait for something to happen?

My wife has been telling me that Ubuntu is my concubine, should I tell her that I am about to divorce my concubine :)

[pureblood (freeseek)]

I confirm that I have had the same problem since I upgraded to Ubuntu Precise. The freezes I experience are completely random, sudden, and there is nothing I can do. I tried upgrading to 3.4.0 and I still experienced freezes. I tried downgrading to 3.0.0 and I still experience freezes. I have just now downgraded Xorg to 1.10.4 to see if this solves anything. When the machine freezes, somewhat more often than once a day, nothing works, keyboard does not respond, mouse doesn't move, SysRq does not work, and I cannot ssh to the machine. Even the fan kind of goes down (maybe because nothing is happening), but I can usually see the screen at the time of the freezing (even if the powersaving was active). No logs whatsoever get generated. If I didn't stumble into this post, I would have guessed something must have broken on my new laptop right at the same time I upgraded to Ubuntu Precise. I have a Dell Vostro V131 with shared graphic card using the i915 driver. Unfortunately, I have no clue how to help debugging this annoying bug. In ten years I have used Linux, this is the worst I have ever experienced. I am testing now if the Xorg downgrading brings any luck.

[Martin Polden (martin-polden)]

@ #183

I'm using the i7-3770K too, and that fix did not work for me either. Kernel 3.3.6 has been stable for me though, with a current uptime of 12 days.

$ sudo intel_reg_write 0x2120 '0x1206800'
Value before: 0x0
Value after: 0x0

[Hein (hhanssen)]

Who can change the status of this bug? Fix released is not the correct status. This bug is still unsolved.

Who changed the status to 'fix released' should take this back please! There is no fix !@!@!!!!!##@#$

[pureblood (freeseek)]

Downgrading to Xorg 1.10.4 did not seem to help. I have just experienced another freeze. Trying now with sudo intel_reg_write 0x2120 '0x1206800'

[Geoff Payne (gelopa)]

Well lads - sometimes the simplest stuff is the way to go. I've been running system load indicator and weather applet on my old 1.6 Gh dual core with 2meg on precise. Endless freezes: disabled nvidia etc etc - but what has worked, so far is them at startup. Suggest it may be worthwhile looking at underlying tech. I'll load back one at a time when sure this has worked and try to diagnose which caused the kak.

[Geoff Payne (gelopa)]

*disabling

[yurx cherio (cherio)]

I share the feelings with #188. It feels like something gone bad with Canonical bug support. The Importance = Undecided, Status = Fix Released and it is not assigned to anyone. Looks like the support, developers, managers - everyone is on vacation. No response, no word of encouragement, no update on the progress. No fix either.

At least somebody from Canonical could give us a hint on what the problem is, if we should hope for a fix and (at least roughly) when the fix is expected. Please ...

[xrado (radovan-lozej)]

I have System Load Indicator installed and when the system starts freezing the disk have very high io (100%).

[florin (floryn-todor)]

Sorry to everyone, I see that for Ivy Bridge systems the problem is still unresolved, but I can't change the status of this bug to enithing else because it said: " Changable only by project maintainer or bug supervisor".

[Azarashi (tul-tut)]

Looks like removing System Load Indicator solved the problem for me...

[avelldiroll (avelldiroll)]

Please remember this is a a bugreport, not a forum thread. All these posts about this bug being ignored or about being disappointed are just adding some noise to the technical information, increasing the risk of the pertinent facts to be missed by the people wanting to figure and eventually fix this bug.

The bug and comments describe at least two different bugs, making this bugreport only useful to differentiate these two bugs, and the fix might have to wait for some concern people to distinguish those two and write separated, clearer bugreports.

Furthermore, these two bugs seem to affect different packages ... the one crashing the whole system (unmovable mouse, lost connexion) seems to concern the kernel, not xorg ... keeping bringing up the subject in this bugreport will only contribute in making this bug unusable and potentially ignored.

Sadly I will only add some more confusion with my report here.

I upgraded a core i5 Lynnfield + nvidia system from a stable 11.10 to 12.04. As after each upgrade i played around with the default desktop environment.
I experienced numerous (4 to 5 times a day) some full system crash (no mouse movement, connexion lost, no log at the time of the crash, not even a kernel panic, i was beginning to thing about testing hardware parts for failures.
I tested the 3.3.6, 3.3.7 and 3.4.0 kernels with mixed results, the 3.3.6 was the best performer here with only 1 to 2 crashes a day.
Meanwhile i finished what i wanted to test on unity and returned for good on my trusty openbox+xcompmgr environment and since then (4 days) I did not experience a single crash.
I am still running the the 3.3.6 kernel ... i just need time to test more thoroughly the repositories' 3.2.

So I strongly believe this bugreport is a mix of:
* a unity/compiz bug
* a kernel bug
* possibly an xorg bug

So people here who don't want to wait for upstream to fix this eventually need to report these bugs more clearly, and assigned them to the correct package/team.

Cheers

[Brendan Brigham (brigham)]

I tried the ppa:xorg-edgers/ppa two days ago, wasn't any help. Still experiencing hard freezes in 3d. Unity 2d seems fine still.

[pureblood (freeseek)]

I have to agree with yorgasor #20. There are two different bugs here. I happened to be affected by both. I could reproduce the google-earth bug by running google-earth and zooming into something. The X server would lock, but I could still move the mouse. Using the "sudo intel_reg_write 0x2120 '0x1206800'" fixes that bug for me, I can zoom fine with google-earth and the X server does not lock up anymore.

But then I have also this other problem, that approximately every six hours the whole machine freezes. The keyboard doesn't respond, the mouse doesn't move, SysRq doesn't respond, and after a while I can hear the hard drive doesn't spin anymore, that is, the machine becomes very quiet. No logs get produced. I am at odds here. Downgrading the kernel doesn't fix it. Upgrading the kernel doesn't fix it. Downgrading the X server doesn't fix it. It all started after upgrading to Ubuntu Precise, but I am starting to weight the odds that this might be a hardware problem rather than a software problem.

[Brendan Brigham (brigham)]

Tryin to think of the possibilities, how would it be a hardware issue as this a pretty wide range of hardware ? Mine and many others have all new hardware. That would kinda suck. I just got a bunch of updates so I'm gonna try 3d again tonight. If it keeps freezing I will create a bug report for Unity 3d.

[Michael (starkpc)]

I'm surprised that ubuntu developers have no Sandy Bridge or Ivy Bridge systems ?!?
Perhaps no one uses Unity 3D...
My Notebook with Sandy Bridge and my Desktop with Ivy Bridge freezes completely with linux 3.2.
In my case, linux 3.3.6 or 3.4 solves the problem completely :-)
But my AMD System with NVIDIA GeForce 8200 mGPU freezes like hell...

[yurx cherio (cherio)]

Freezes when using google-earth? That's interesting because I noticed freezes when I use google chrome browser. Almost 2 days ago it started freezing (as I mentioned before it doesn't freeze immediately, it takes several minutes to freeze while the symptoms worsen) and I managed to kill Chrome browser before it completely froze. The freezing stopped the system even came back and has been up for almost 2 days since. I haven't used Chrome since that time yet.

Now that I am thinking I was using Chrome every time at the time of freezing. My compiz CPU was going up and IO Wait was taking all available CPU resources. I don't run Google Earth but I can imagine it may use the same libraries under the hood as Chrome.

[C de-Avillez (hggdh2)]

reverting to Confirmed/High.

@all: please do not touch Status/Importance.

[Anthony PERRIN (anthony-perrin54)]

Last kernel 3.2.0-24 solve problem with intel sandy bridge.
Kernel 3.4 solve problem with intel ivy bridge.

[Alfagulf (alfagulf)]

Thanks C de-Avillez (hggdh2)

[Alfagulf (alfagulf)]

Anthony:

In my case, 3.4 solved the complete system freeze, but I am still facing Xorg freeze every once a while.

Again: I am using Asus P8Z77-V LX motherboard with I7 3770K + 16GB Ram + HD 4000 GPU on Ubuntu 64
uname -a result:
Linux Asus 3.4.0-030400-generic #201205210521 SMP Mon May 21 09:22:02 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

[Hanine HAMZIOUI (hanynowsky)]

As a recall:

It's been 6 days since I have not had the total freeze and this since the moment I upgraded to : Linux 3.2.0-24-generic #39-Ubuntu SMP Mon May 21 16:52:17 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux Kernel

My machine is a laptop : Sandy Bridge i7 amd64 (4 G of Ram) with Integrated Graphics Intel HD 3000 (Machine used for heavy development, so many browsers opened at the same time (Chrome,chromium,opera, fox,midori), IDEs, office, and other considerable I/O apps and no problem so far now).

Could someone other than Anthony PERRIN with the same specs confirm that the problem was solved for him.

[z (steveriley-deactivatedaccount-deactivatedaccount)]

I'm experiencing the total freeze bug. And it appears not to be Unity-related, as I'm running Kubuntu. The complete freeze (no mouse, no REISUB, no nothing) occurs with three different kernels:

* 3.2.0-25
* 3.4.0-030400 (Ubuntu mainline)
* 3.4.0-3 (from Xorg-Edgers)

I'm running the Xorg-Edgers stack, on a ThinkPad T520 with Intel HD3000 Sandy Bridge graphics (the onboard nVidia is disabled in the UEFI).

As others have reported, I can find nothing in any log file.

There's only one correlation I can identify so far: the freeze happens whenever I move my external mouse, which is a Lenovo ScrollPoint. After today's freeze, I've replaced that with a different mouse, so we'll see.

FWIW, my daily routine includes keeping VMware Player open, running a Windows XP VM. I'm not convinced that's contributing to the problem, though.

[z (steveriley-deactivatedaccount-deactivatedaccount)]

Following up to my #207... nope, changing mice didn't help. Just experienced another complete freeze. Absolutely zero response, even magic SysRq failed. This particular time I was on the 3.4.0-030400 kernel, had my VM open, and was dragging the mouse inside a Rekonq window.

[Kai Nickel (0tlwui-post-kj985r)]

#207: This is an interesting observation. I can confirm that for me the freeze happens only if I manipulate something with the mouse (like clicking a button, scrolling, ...). It NEVER happened that I came back to my PC and found that it was frozen while I was away.

[BotoxBimbo (cbonami)]

Same here... applied all updates.
Nothing helps.

In my case it also sometimes leads to corruption of a file in my IDE (IntelliJ's workspace.xml), probably because for some reason IntelliJ keeps this file open at all times while I'm working with it.

The observation of the mouse: I guess this is true.
Definitely when you have not been working for a minute, and return back to your PC to continue, and start handling the mouse again. Also no mouse pointer visible anymore.

[z (steveriley-deactivatedaccount-deactivatedaccount)]

More follow-up. Today, before starting my VM, I changed the VM's settings. I selected "Disable acceleration for binary translation" and I deselected "Virtualize Intel VT-x/EPT or AMD-V/RVI."

And good news: no freezes! I've been moving my mouse about the desktop with reckless abandon all day, and there's been nary a hiccup.

My initial reaction, though, is that it's pure consequence. Unless, of course, everyone reporting this bug also happens to be running some kind of VM? I doubt that.

[Eloy Paris (peloy-chapus)]

Bryce,

I've experienced a complete system freeze twice and both times I was not watching video. Based on comments made here I think other people that have experienced the crash while they were not watching videos. The new bug title that you chose is misleading. Where did you get that this only happens while watching videos?

In my case, both times I experienced the freeze it happened right after I finished using Alt-Tab to switch applications. Complete system freeze; the machine would not even respond to pings anymore and both keyboard and mouse obviously dead.

This was happening on my work machine and I could not afford the instability so I grabbed a pristine 3.3.7 tarball from kernel.org, compiled that, and that is what I am running. My uptime is now 7 days.

My machine uses an integrated Intel graphic controller.

Cheers,

Eloy Paris.-

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 993187

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Brendan Brigham (brigham)]

@ Brad Figg...What exactly does this command do, does it send crash reports and other relevant information directly to Launchpad ? If so, I will log back into 3d and can freeze it within 30 seconds lol.

[Ben Thornton (smenjas)]

.tmp.unity.support.test.0:

AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ben 30443 F.... pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xed220000 irq 48'
   Mixer name : 'SigmaTel STAC9227'
   Components : 'HDA:83847618,80862008,00100201'
   Controls : 35
   Simple ctrls : 22
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
DistUpgraded: Fresh install
DistroCodename: precise
DistroRelease: Ubuntu 12.04
DistroVariant: ubuntu
DpkgLog:

GraphicsCard: NVIDIA Corporation NV43 [GeForce 6600 GT] [10de:0140] (rev a2) (prog-if 00 [VGA controller])
HibernationDevice: RESUME=UUID=1f62a690-6f78-4b61-b8a0-107ba26ae798
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
Package: xserver-xorg-video-intel
PackageArchitecture: amd64
ProcEnviron:
 TERM=xterm
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 nouveaufb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic root=UUID=45bfb785-a450-4599-98ac-a3cfa034a992 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.2.0-24.39-generic 3.2.16
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-24-generic N/A
 linux-backports-modules-3.2.0-24-generic N/A
 linux-firmware 1.79
RfKill:

StagingDrivers: mei
Tags: precise staging precise ubuntu compiz-0.9
Uname: Linux 3.2.0-24-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 09/06/2007
dmi.bios.vendor: Intel Corp.
dmi.bios.version: CO96510J.86A.5960.2007.0906.0130
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: DQ965GF
dmi.board.vendor: Intel Corporation
dmi.board.version: AAD41676-601
dmi.chassis.type: 3
dmi.modalias: dmi:bvnIntelCorp.:bvrCO96510J.86A.5960.2007.0906.0130:bd09/06/2007:svn:pn:pvr:rvnIntelCorporation:rnDQ965GF:rvrAAD41676-601:cvn:ct3:cvr:
version.compiz: compiz 1:0.9.7.8-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
v...

[Ben Thornton (smenjas)]

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[Ben Thornton (smenjas)]

I encountered this bug when trying to play the video on the following web page:

http://videolectures.net/wsdm09_dean_cblirs/

[Bryce Harrington (bryce)]

On Sat, Jun 02, 2012 at 01:55:03AM -0000, Eloy Paris wrote:
> Bryce,

> This was happening on my work machine and I could not afford the
> instability so I grabbed a pristine 3.3.7 tarball from kernel.org,
> compiled that, and that is what I am running. My uptime is now 7 days.

Great, then do a git bisection to find the patch that fixes it.

> I've experienced a complete system freeze twice and both times I was not
> watching video. Based on comments made here I think other people that
> have experienced the crash while they were not watching videos. The new
> bug title that you chose is misleading. Where did you get that this only
> happens while watching videos?

The bug description:

"I recently installed newly released ubuntu 12.04 LTS 64 bit version on
my desktop. And it is frequently freezing, for the first few hours it
ran smoothly and when I started watching videos it started freezing
randomly."

If this bug has become a hodge podge of people's unrelated issues, then
perhaps it's going to be unworkable and we should just close it as
wontfix.

[freeman70 (sdoell)]

I am not trying to blame anyone. It looks like whoever accessed the status of this bug probably only read the original post and didn't read the entire thread. If they had, they would know it affects people under a wide variety of circumstances and doesn't only affect people watching video. That is why this hard freeze is so difficult to troubleshoot. It is hard to pinpoint the exact cause of the lock-up.

[Ben Thornton (smenjas)]

The logs I submitted earlier are from a system that I can confirm has this bug. A few minutes ago, the bug occurred a few seconds after launching a DIVX-encoded AVI in VLC. I could still move the mouse cursor, but the rest of the screen became totally unresponsive. I could still log into the machine via SSH. Killing the X process works: the DE restarts and I can continue using the system without rebooting.

[Bryce Harrington (bryce)]

Based on the past few comments, this does indeed appear to be an amalgam of different issues, none of which are properly reported so this is not actionable.

See https://wiki.ubuntu.com/X/Troubleshooting/Freeze for guidance on how to properly diagnose and report gpu lockup bugs.

[M (mzmcgrat)]

Thanks Bryce! You've taught me to trust the community more than the experts. #91 Michael (starkpc) fixed one problem by recommending upgrading to a newer kernel to fix Ivy Bridge graphics lockups. Had I encountered this bug a week later than I did, I'd have run out of time and returned my brand new motherboard and CPU to the manufacturer and possibly given up on Ubuntu 12.04. Michael, you're my favorite community member right now!

To those who encounter lock ups where you can still move the mouse or access the terminal, or you're using graphics other than onboard Intel, stay strong! A kernel upgrade might not fix your issue, but at least you know that others share your troubles and a fix should surely be in the works!

Since this bug report is an amalgam of different issues, some of which have been fixed, I encourage users to ignore the current status and read through all the posts. The "Won't Fix" status is patently false for those of us whose systems have been completely fixed by the advice of the commenters.

Bryce, I hope your common sense returns and allows you to point users of modern hardware to easy fixes instead of insisting that their adoption of Ubuntu was a mistake. These bug reports are not just for developers. Please return this bug to the previous status to alert users that there are possible fixes to their problems.

[pureblood (freeseek)]

Since the bug many people are experiencing is related to hard freezes where you *cannot* move the mouse anymore or ssh the machine, maybe a new bug should be opened with these directions in the title, and then people should be directed from this thread to that thread instead. I confirm that I am still experiencing this issue with kernel 3.4.0-030400-generic, that there is no obvious trigger (most of the times it happens while the computer is on at night or while I am at work and nobody is using it), that it happened with KDE as well as Unity. I have a new Vostro V131 which, I believe, is a Sandy bridge(?). Are most of the people with *this* version of the bug running Intel systems with integrated graphic card? I would like to understand what we have in common. It would be a first step.

[yurx cherio (cherio)]

I have Nehalem Lynnfield i7 860 + nvidia GeForce GT 220.
My freezes occur when running either Unity 3D or 2D (64amd). Freezes persist after upgrading to 3.3.6, 3.3.7 and 3.4.

Originally I was suspecting different culprit applications e.g. Chrome, VirtualBox, Eclipse IDE, Totem player, etc but later I experienced freezes when these applications were not running.

At the office I have a workstation withe SAME hardware configuration (including nvidia model and drivers) which runs XFCE and it doesn't freeze which points to Unity/Compiz as a potential culprit.

[Alfagulf (alfagulf)]

I promised you that I will let you know my experience when I install a separate graphic card.

I plugged in a ATI HD5770 PCIe card into my machine and after struggling with the installation of the AMD drivers, I finally succeeded to install the drivers on ubuntu 12.04 64bit kernel 3.2 as show in the following uname output:
Linux Asus 3.2.0-24-generic #39-Ubuntu SMP Mon May 21 16:52:17 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
My setup now is Asus P8Z77-V LX motherboard with I7 3770K + 16GB Ram + ATI HD5770 GPU on Ubuntu 64

For two days now, I did not experience any system freeze ; Neither Xorg nor complete kernel freeze.
I even enabled multi-threading in FlightGear which used to freeze the system very quickly when HD4000 was used, but now it works fine.

I hope this comment will help those who are working on this problem.

Thanks

[yurx cherio (cherio)]

Ok, my XFCE at home freezes too. But at the office with exactly the same hardware it doesn't freeze. And the difference is that the one that doesn't freeze was a clean Xubuntu 12.04 install while the one that freezes was a regular Ubuntu upgrade from Oneiric.

[Ben Thornton (smenjas)]

I really don't understand Launchpad. When I report a bug, I get instructions not to report a new bug, but instead to find another bug report and say I'm experiencing it too. But when I do that, the bug gets closed "Won't Fix." Oh well. I guess I'll try generating a new bug report.

[Yordan Tsolov (mazzzterz)]

I'm experiencing this bug as well. The system freezes and I can move the mouse around. Some times I can change to tty1-tty6, some times I can't. I tried to change to kernel 3.3.6 and 3.3.7 and this problem disappears. For two days no freezes. But other problems appeared. My camera stopped working, I can't change brightness with keyboard keys and who knows what more. I hope a REAL fix is released soon without breaking everything else.

[Norm (norm-nft)]

This bug still happening in 32 bit mode my original post #39. Haven't used the machine for 5 days as it has been unusable, freezing after a few minutes. Decided to try again & downloaded the latest updates and the #%^&* thing froze during the install process so it doesn't appear to be related to video. This report is being generated from WINDOWS. My other machine is an ACER Netbook which is quite happy with 12.04. I am a newbie & don't have the skills to play around with other kernels. Can somebody please sort out this problem for new users!!!

[Yordan Tsolov (mazzzterz)]

Norm (norm-nft) go to this link:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.3.7-precise/

and download
for 32bit:
    linux-headers-3.3.7-030307-generic_3.3.7-030307.201205211535_i386.deb
    linux-image-3.3.7-030307-generic_3.3.7-030307.201205211535_i386.deb
if you have PAE (Physical Address Extension) instead of the ones above download this ones
    linux-headers-3.3.7-030307-generic-pae_3.3.7-030307.201205211535_i386.deb
    linux-image-3.3.7-030307-generic-pae_3.3.7-030307.201205211535_i386.deb

for 64bit:
    linux-headers-3.3.7-030307-generic_3.3.7-030307.201205211535_amd64.deb
    linux-image-3.3.7-030307-generic_3.3.7-030307.201205211535_amd64.deb

You have to download this one as well:
    linux-headers-3.3.7-030307_3.3.7-030307.201205211535_all.deb

and install with double click or using dpkg.
If you want version 3.3.6 then go to this link: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.3.7-precise/ and do the same.

[Timo Aaltonen (tjaalton)]

those with a 64bit install can try this kernel, which has three commits backported (in addition to the ones in the kernel found in precise-proposed):

http://kernel.ubuntu.com/~tjaalton/precise-kernel/

also, those with an nvidia card better look elsewhere and stop adding noise here.

[Micha B (micha-ubuntu)]

@Timo / #256:

64bit install, complete freeze problem (3.3.6 / #91 solves the problem here, but that's no LTS solution).

I'd tried to install your kernel, but:
Missing package: linux-headers-3.2.0-25-generic

Where can I get this one? Thx!!

[Micha B (micha-ubuntu)]

#256 / #257:

Sorry :-(,
linux-headers-3.2.0-25-generic depends on linux-headers-3.2.0-25, that's the problem.

Where can I get linux-headers-3.2.0-25 ?

[Timo Aaltonen (tjaalton)]

you don't need to install the headers.. anyway, you could grab the metapackage from precise-proposed if you want to

[Micha B (micha-ubuntu)]

Thx Timo! Up & running:

micha@ngm:~$ uname -a
Linux ngm 3.2.0-25-generic #40+tja1 SMP Mon Jun 4 14:08:37 EEST 2012 x86_64 x86_64 x86_64 GNU/Linux

Trying to freeze the box now. Stay tuned :-)

[Micha B (micha-ubuntu)]

@Timo: Bad news: System completely frozen. 3.2.0-25-generic #40+tja1 does not solve the problem. Back to 3.3.6 (Michael #91).

[Michael (starkpc)]

@ #260
my system freezes already with 3.2.0-25-generic #40+tja1, but only in the unity 3D application switcher.
because of this bug:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/980017/comments/54

so you need to install mesa - 8.0.2-0ubuntu3.1 :-)

(strangely, with linux 3.4 the unity 3D application switcher runs stable...)

[yurx cherio (cherio)]

Running XFCE installed from scratch (as Xubuntu) and so far no freezes. No other solutions (new kernels, upgrading xorg, using 2D vs 3D) above worked.

[Timo Aaltonen (tjaalton)]

Micha B: could you check if you have the mesa update.. run 'apt-cache policy libgl1-mesa-dri', and if you don't have 8.0.2-0ubuntu3.1 installed update your machine and test again.

[Brains (brains)]

unbelievable... 264 comments and counting and this is set to "won't fix"?!

I changed from Ubuntu to Fedora 16 because of this with the latter running stable. All were pristine installs.

This bug's thread is a "hodge podge" of different scenario's precisely because it happens IN a multitude of scenario's. Affected users can have the problem while watching video's, while working with GIMP, while browsing CPU / GPU intensive websites and so on. If anything, the bugs title and description should be updated instead of dismissing this.

I can reproduce it 100% within 3 minutes by:
Clean install on my MSI EX600
Either update or don't the nVidia drivers (doesn't make a difference)
Open www.eurogamer.net (quite resource heavy that one)
Open a digital foundry face-off article (just because it's a combination of flash, of images, video and a whole lot of comments)
Scroll up and down the article.
Crash within a minute!

The crash is instant, no log files get updated afaik.

The crash may be preceded by one or more screen "flashes" - as if the display is updating. This is milliseconds long, but clearly noticeable.

One of the flashes eventually freezes the complete system, with a hard reset the only solution.

Happens on nVidia, ATI, Intel etc. But clearly has somethign to do with the display, the LCD image updating. Quite where - I don't know.

This bug is blocking for those involved. Critical for Canonical. As mentioned - I am getting used to Fedora now - one of many answers to this problem.

Please update priority and status. Thanks!

[Timo Aaltonen (tjaalton)]

Micha B: please file a new bug if the mesa update doesn't fix it for you, I'll stop following this one.

Bug triagers; a bug describing 'a hang with mouse cursor moving' doesn't tell anything, so don't dupe bugs blindly. I've unduped them all now...

Others: use the forums or a mirror for venting frustration. FYI, hangs like these are hw/driver specific, so me-tooing on LP with completely different setup what the original poster had results in an impossible bug to follow/fix. Hence the wontfix.

[Brains (brains)]

@Timo: I understand that the bug is difficult to describe and that the plethora of different descriptions make it difficult to debug / pinpoint, hence address. It does not mean canonical or the community should not keep track of it.

This is not venting frustration - although it also is. This is a genuine bug report, which made me move to Fedora (for the time being), since Ubuntu is plain and simply unusable at the moment.

If this kind of stability is your first encounter with Ubuntu / Linux, you'll never return. I checked out bug reports and sorted them on "heat". The first bug is "Microsoft has a majority stake on OS installs". Hardly a "bug" which you can repro as well, is it? Yet that keeps open. I suppose as an inside joke, but still, this bug will NOT help reach that goal...

Reopen and have it addressed. Get hold of a laptop having this problem!

[Micha B (micha-ubuntu)]

@Timo #264:

micha@ngm:~$ apt-cache policy libgl1-mesa-dri
libgl1-mesa-dri:
  Installiert: 8.0.2-0ubuntu3.1
  Kandidat: 8.0.2-0ubuntu3.1

Bye bye Ubuntu??

[z (steveriley-deactivatedaccount-deactivatedaccount)]

I see this bug is now filed under xserver-xorg-video-intel. Given that the reports include all matter of graphics equipment, is that assignment correct?

Anyway...given that I'm not sure, at this point, where else to report some potential success, I thought I'd offer something here. This morning I installed the 3.4.1 mainline kernel. Even though it's noted as "3.4.1-quantal," it appears to run without issue on Precise. And I've had zero freezes today, which is a pleasant relief. I'd be curious to know if a few other folks here might experience the same benefit.

My setup:
* ThinkPad T520
* Intel HD 3000 graphics (nVidia disabled in UEFI)
* 8 GB RAM, 256 GB SSD
* situated in a dock
* external mouse and keyboard
* using X and drivers from Xorg-Edgers
* kernel boot parameters: "noop acpi_osi=Linux pcie_aspm=force ipv6.disable=1"
* all power-saving suggestions from Powertop are enabled (via a script I wrote)
* ThinkFan enabled
* /tmp on tmpfs

[Michael (starkpc)]

Linux 3.2 is terrible and no improvement in sight.
I recommend Linux 3.4 for all Intel HD Graphics 2000, 2500, 3000 and 4000 users.
Linux 3.3 or 3.4 runs perfectly with Intel HD Graphics 2500, 4000 (Ivy Bridge) and Intel HD Graphics 2000, 3000 (Sandy Bridge).
see #91 and #117

no one uses Linux 3.2, except ubuntu 12.04 LTS :-(
- Fedora 17 uses Linux 3.3.x (Linux 3.4 is already in testing)
- Mageia 2 uses Linux 3.3.x
- openSUSE 12.2 uses Linux 3.4.x (is not released yet :-)
- Arch LInux uses Linux 3.3.x (rolling release model)

[Martin Polden (martin-polden)]

I get occasional soft crashes running 3.3.6 and Intel HD 4000. Switching TTY and restarting lightdm is possible when this happens.

Jun 6 13:27:52 hal kernel: [1655889.242914] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Jun 6 13:27:52 hal kernel: [1655889.242966] [drm:i915_wait_request] *ERROR* i915_wait_request returns -11 (awaiting 289578754 at 289576802, next 289578755

These crashes are much less frequent though (happened twice in 14 days). Trying 3.4.0 now.

[Kevin LeBlanc (leblanc-kevin-u)]

@Michael (starkpc) #270:

I tried that using Linux Mint 13 (based off Ubuntu) and it still froze three times in one day. I followed the tutorial in quidsup's video on YouTube after goofing up PCLinuxOS. After the last time LM13 froze, I decided, for compatibility's sake, to try LMDE instead of going back to PCLinuxOS.

I should also re-mention that this is also happening to non-Sandy Bridge users, which I am one. I'm really, really unimpressed by how Canonical's bug-fix squad is not handling this. This is enough to drive people back to Windows, which I've actually been considering.

[pureblood (freeseek)]

I have followed the suggestion from Steve Riley, installed kernel 3.4.1-030401-generic from the ppa with kernel boot parameters "noop acpi_osi=Linux pcie_aspm=force ipv6.disable=1". After about 9 hours of uptime, my computer crashed again (hard lock-up, no mouse, no Ctrl+Alt+F1, no SysRq, no ssh, no logs). I have a brand new Vostro V131 with Intel HD 3000. I have activated the "drm.debug=0x06" option, and I collected a bunch of logs from the /var/log/kern.log file. This can be analyzed at this address: http://bit.ly/L48he0 but I don't know if it can be of any help.

For Steve Riley, do you know what changes in kernel 3.4.1 fixed the problem for you? Is this something in the i915 kernel module? Do people agree that this is a GPU hang? Can someone direct to other forums where more information is provided or give suggestions on how to collect logs?

[z (steveriley-deactivatedaccount-deactivatedaccount)]

@pureblood: I wish I could answer your questions, but alas, I cannot. I can report that I enjoyed no crashes today. Two full days of no crashing is a welcome relief. But like many folks chiming in here, I am at a loss to understand the causes of these crashes, so I can't explain why 3.4.1 appears to be working well for me.

I didn't know about the "drm.debug" option, so thanks for posting that, I might return to an earlier kernel, add the parameter, and see what my log produces. But from what I can tell by your log, nothing hang-related shows up: the last few lines appear regularly throught.

An idea just occurred to me, and I'll mention it here for folks willing to experiment. Recent kernels are by default enabling RC6 power saving for Intel graphics. When first introduced, there were numerous reports of various sorts of problems. I see by looking at your log, RC6 is enabled. It might be worth disabling that function to see if makes the problem go away; do that with the boot parameter "i915.i915_enable_rc6=0".

At this point, I feel like many of us are in guess-something-and-see-if-it-sticks mode. So in that vein, the truly adventuresome here might want to give the 3.5-rc1 kernel a try!

[pureblood (freeseek)]

Actually in the log I posted it says "[drm:intel_enable_rc6], Sandybridge: deep RC6 disabled", do you think I have it enabled instead? What did you see in the log file?

[z (steveriley-deactivatedaccount-deactivatedaccount)]

There are muliple RC6 modes. From "modinfo i915":

+------------
| parm: i915_enable_rc6:Enable power-saving render C-state 6. Different stages
| can be selected via bitmask values (0 = disable; 1 = enable rc6; 2 = enable deep rc6;
| 4 = enable deepest rc6). For example, 3 would enable rc6 and deep rc6, and 7 would
| enable everything. default: -1 (use per-chip default) (int)
+------------

Your log shows:

+------------
| [drm:intel_enable_rc6], Sandybridge: deep RC6 disabled
| [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
+------------

The kernel is automatically enabling the basic RC6 mode ("RC6 on") but not the deep or deepest modes ("RC6p off, RC6pp off"). My suggested boot parameter will override this, and disable all RC6 modes.

[Andrzej (ndrwrdck)]

Not sure if that's a related problem (can't really afford reading all 276 comments).

My Ubuntu 12.04 also freezes (completely, the cursor doesn't move). It only happens when running the system on battery. Always within several minutes from booting/switching of the AC adapter. On AC, it works just fine for days, without any freezes.

My config: Sony F-series laptop, i5 CPU, Nvidia graphics + Nouveau drivers. Xfce 4.10 desktop. System upgraded from 11.04 and 11.10 (I started seeing these freezes a couple of months ago, whilst still on 11.10).

[Brains (brains)]

@Kevin LeBlanc (leblanc-kevin-u):
> I'm really, really unimpressed by how Canonical's bug-fix squad is not handling this.
> This is enough to drive people back to Windows, which I've actually been considering.

Totally agree. Or to Fedora, Mint, Gentoo, Debian, Slack... plain incredible.

[Danny Goodall (danny-onebloke)]

At the risk of conflating yet another unrelated bug into this thread of apparently non-related bug reports, I wanted to share my experience and a workaround in case others have the same problem. See my contributions on this bug thread...

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/908335

..and take a look at your USB devices/hubs. It sounds ridiculous but the conclusion I have reached is that for certain hardware configurations, kernels >= 3.x will hard hang if USB devices are plugged into certain USB ports/controllers.

I had a complete hang problem with any kernel > 3.x on my Dell laptop that only manifested itself when docked. I wanted to move from Ubuntu 10.10 and every upstream release/kernel I tried would hang my Dell laptop WHEN DOCKED within ~5 minutes but would work perfectly when UN-DOCKED.

I ASSUMED (I know!) that this was graphics related due to the fact a) every hang problem appears to be blamed on graphics/x and b) I used dual monitors only when docked. But after some pointers from some excellent chaps from Canonical I tried to run docked but with the USB devices removed from my docking station ports. No problems. I ASSUMED (I know!) that this was down to a specific USB device but then I plugged the USB devices (keyboard/mouse/web cam) into the laptop USB connectors instead of the docking station's and again no problem. I've been running 12.04 with zero problems for a few weeks now and it's fantastic.

If I plug any USB device into my Dell PR02X docking station using a > 3.x kernel it will hang. Hope that this might help someone on this thread.

And now the venting...I've come to the conclusion that reporting and management of bugs in Ubuntu is chaos. Perhaps that's just the open source world that I'm relatively new to? Perhaps it works and perhaps it's the only way that a relatively small team of fixers can deal with the demands on their time. But I have to ask how a bug thread like this can come into existence such that >250 posts about critical errors that may or may not be related to each other can simply be marked as won't fix?

I understand why this thread is marked won't fix NOW. It contains a random collection of reports that each only have "12.04" and "completely freezes frequently" in common. But what lack of control and what sort of opaque process leads us users to latching on to a thread that 'appears' to the layman to describe the same problem we are having, only for some months down the line to be told that we reported the bugs in the wrong way?

I REALLY appreciate the community effort that went into providing me with 'free' software and it would be churlish to attack the community behind it - as some have on here. But Canonical has commercial ambitions and wants to reach a wider audience and in the commercial world, this process is not good enough.

[Timo Aaltonen (tjaalton)]

ok one more comment.

Those who know how to add kernel parameters via the grub boot menu, and have a Sandybridge(!) platform please try adding 'i915.i915_enable_fbc=0' to the parameters to see if it helps with the hangs. This disables framebuffer compression, which got disabled for sandybridge in kernel 3.3. It's also queued in the 3.2 stable queue, and the commit is a oneliner which might make it in the next upload to precise-updates..

Andrzej: no, you have nvidia hardware. Please file a new bug with 'ubuntu-bug xorg'.

[z (steveriley-deactivatedaccount-deactivatedaccount)]

@Danny Goodall (#279): Indeed, my freeze experiences have been only with the laptop that I regularly dock, my ThinkPad T520. Connected to that are an external monitor, mouse, and keyboard. I'd have to say I wouldn't have thought to consider this arrangement to be a contributor to the problem, but that other bug report has got me wondering. My other laptop is a ThinkPad X1, which is sort of my "lab" laptop; I put it through a much more rigorous workout with experimental builds of a variety of packages and it's never frozen once.

---

@Timo Aaltonen (#280): That's curious. I wasn't aware that the FBC parameter was causing problems; I've read only of issues related to RC6. I'm currently booted into the 3.4.1 kernel, I'm using no i915 kernel boot parameters, and here's the current state of my i915 driver:

steve@t520:~$ sudo grep . /sys/module/i915/parameters/*
/sys/module/i915/parameters/enable_hangcheck:Y
/sys/module/i915/parameters/fbpercrtc:0
/sys/module/i915/parameters/i915_enable_fbc:-1
/sys/module/i915/parameters/i915_enable_ppgtt:-1
/sys/module/i915/parameters/i915_enable_rc6:-1
/sys/module/i915/parameters/lvds_downclock:0
/sys/module/i915/parameters/lvds_use_ssc:-1
/sys/module/i915/parameters/modeset:-1
/sys/module/i915/parameters/panel_ignore_lid:0
/sys/module/i915/parameters/powersave:1
/sys/module/i915/parameters/reset:Y
/sys/module/i915/parameters/semaphores:-1
/sys/module/i915/parameters/vbt_sdvo_panel_type:-1

FBC is set to "-1", which means to use the chip's default setting. This would imply that the kernel isn't built to configure a particular setting. Can you provide more information on the specific change made in 3.3 and that's planned for 3.2?

[Michael (starkpc)]

@ #280
good to know! never thought about that.

Ubuntu is getting better and better. This new Q-series LTS Backport PPA rocks:
https://launchpad.net/~ubuntu-x-swat/+archive/q-lts-backport

This PPA contains backports of the kernel, X.org server, and associated components from quantal to precise.
This PPA is not intended for end users, it is for testing of the backport stack only.

[z (steveriley-deactivatedaccount-deactivatedaccount)]

Grr *@#$%! Moments after I typed #281, my T520 froze up. Again, during a mouse movement. Thus, on the third day of my experiment, using kernel 3.4.1 as an attempt to expunge this problem has failed. Sigh.

I'll try disabling FBC now. I really don't want to give up the dock just yet.

---

Holy crap! It crashed *again*, while I was typing this comment! I hadn't yet disabled FBC. Well, FBC *is* disabled now. So we'll see...

[z (steveriley-deactivatedaccount-deactivatedaccount)]

I just endured freeze #3 today. I wasn't even moving the mouse! I was on a VoIP call (with Twinkle) and the audio went away. I knew the cause was the same crash because all the other symptoms were present: mouse cursor won't move, second hand on clock was stopped, no TTY switching, and magic SysRq didn't respond.

So disabling FBC isn't sufficient. I've now disabled RC6 and we'll see what happens. Next, I suppose, is to try going dockless. This is utterly frustrating and impeding my ability to work without interruption.

[Timo Aaltonen (tjaalton)]

steve: FBC is disabled since 3.3, so adding that option while running 3.4 does nothing. So please file a new bug by running 'ubuntu-bug xorg'

[z (steveriley-deactivatedaccount-deactivatedaccount)]

So today I went dockless... actually the only external device connected was my USB headset. And I had yet another freeze. Curiously, it was during a VoIP call.

Perhaps this bug is some nasty regression that gets triggered when an external device is in use on systems with Intel graphics? I find it suspicious that every crash I've experienced happens either when moving the mouse or yaking on my VoIP.

@Timo... I'm not sure what value would come from filing yet another bug describing this problem.

[yostral (yostral)]

I've just tried Ubuntu 12.10 alpha, with 3.4 kernel, and used vesa video dirver for my nvidia card. So no 3D, nothing special. I've used it 5 minutes, then complete freeze again ! :-(

I only tried to install synaptic using Software Center and was waiting for it to install. So really basic things...

[Paul Nooan (paul-noonan)]

Not sure if there are two issues here, some get complete freeze, and some can get to the command line with CTRL + ALT + F1.

I'm in 12.04 64 bit, using Radeon graphics with the open source driver. I get a complete lockup.

[Michael (starkpc)]

With linux kernel (3.4.0-4-generic) from *Q-series LTS Backport PPA* my system (Intel i5 3570K, Gigabyte Z77M-D3H) runs completely stable.

Howto:
sudo apt-add-repository ppa:ubuntu-x-swat/q-lts-backport
sudo apt-get install linux-image-generic-lts-quantal linux-headers-generic-lts-quantal

[yurx cherio (cherio)]

I thought I found a safe shelter with Xubuntu but after almost a week of uptime XFCE froze. So far I've tried Unity 3D, 2D and XFCE (installed from scratch) and all of them freeze. I tried kernels 3.3.x and 3.4.x with no obvious siccess.

Dell XPS Studio 8100, i7 860 (Lynnfield Nehalem), nVidia GeForce GT 220, 8Gb ram, fake (BIOS) RAID 1.

Based on this bug report it doesn't seem to be specific to GPU, packaging (Unity/Gnome/KDE/XFCE/LXDE), architecture and software running at the time of freezing. I am leaving Ubuntu for good. It's just too unstable for me at this time and there is no light at the end of the tunnel. It is a very hard decision and very disappointing.

[Martin (cyderia8530)]

This bug affects me to. Running a Dell Latitude E4300 CORE Duo with Intel graphics.
It's a graphics freeze for me, I can move my pointer and the keyboard still functions when it locks. This usually happens after my account automatically locks following a short period of inactivity as per my settings. Restarting Compiz doesn't fix it for me, but restarting lightdm does as per comment #151.
1). Ctrl-Alt-F1
2). Login
3). Type sudo restart lightdm
4). This takes me to the greeter.
5). Login to my account, and the graphics are functional again.
Sadly restarting lightdm kills all window processes, but background and backend processes continue to run through the lightdm restart.

[Oibaf (oibaf)]

Can you open a new bug for this and report the number here?

Citando Martin <email address hidden>:

> This bug affects me to. Running a Dell Latitude E4300 CORE Duo with
> Intel graphics.
> It's a graphics freeze for me, I can move my pointer and the
> keyboard still functions when it locks. This usually happens after
> my account automatically locks following a short period of
> inactivity as per my settings. Restarting Compiz doesn't fix it for
> me, but restarting lightdm does as per comment #151.
> 1). Ctrl-Alt-F1
> 2). Login
> 3). Type sudo restart lightdm
> 4). This takes me to the greeter.
> 5). Login to my account, and the graphics are functional again.
> Sadly restarting lightdm kills all window processes, but background
> and backend processes continue to run through the lightdm restart.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/993187
>
> Title:
> ubuntu 12.04 completely freezes frequently.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/993187/+subscriptions
>

--
ing. Pedretti Fabio
Responsabile U.O.C. "Reti e Sistemi"
http://www.unibs.it/organizzazione/amministrazione-centrale/servizio-servizi-ict/uoc-reti-e-sistemi
Università degli Studi di Brescia
Via S. Faustino, 74/B - 25122 Brescia
E-mail: <email address hidden>

[Brains (brains)]

@Martin (cyderia8530): Your bug is not related to this one. This bug is for people experiencing lock-ups where TTY, SSH or another means of recovery is NOT possible, unless a HARD reset. I updated the description.

[george pang (xilvar)]

Obviously this bug is not really usable as an actual bug, but I am almost certainly encountering the original bug filer's issue so I'll document it here in part because I can no longer gather data about the crash myself. machine: core i5 3570k on a z77 motherboard - hd4000 graphics only. (asus p8z77 lx)

I experience the complete lockup with no kernel logs and no error's apparent in the i915 error_state locations. No keyboard or mouse function, no ability to login ssh. CPU fan spins up to what I think of as it's 'default' state. Reset switch takes much longer to function than usual (10s). Image frozen on screen.

Oddly I originally installed ubuntu 12.04 I did not encounter this bug at all. At a distinct point after upgrading packages (which included a kernel security fix) I abruptly began to crash usually within minutes of boot.

I disabled automatic x startup and the problem went away. After reading this bug I installed a 3.4 kernel and started running x again with no issues. This machine is actually a server to be deployed to a colo, so I eventually decided to go back to the standard kernel and simply not use x in order to regain the ability to do 'standard' kernel upgrades and use ksplice.

A week later and after various non kernel updates I eventually tried to run x again in order to gather some data to file my own bug report, but oddly the system is much more stable now and I've only encountered one system crash in a couple days of trying to reproduce the crash.

Thus my own experience seems to indicate that there is some sort of triggering package (presumably in x) which has been revised a number of times since 12.04 was released. The triggering behavior has probably not been present during the entire duration. Whatever that behavior is, it is probably entirely valid and is simply exercising a portion of the standard 3.2 kernel which was not sufficiently tested (presumably somewhere inside the intel kernel level drivers).

[z (steveriley-deactivatedaccount-deactivatedaccount)]

Well, I'm not sure we can know that the issue is confined to an interaction between some X update and kernel 3.2. Many of us have tried later kernels and still experience the problem.

I was planning to delay writing about my next experiment, but since the issue of kernel versions came up again, I'll report my latest results. Yesterday morning I installed 3.5rc2. The entire day passed without incident -- hooray! And today has been, so far, similarly successful. Lots of mouse movement, a few VoIP calls, and no lockups. If I can get four solid days of such behavior, I'd tentatively state that this kernel could be the one we're looking for.

[Michael (starkpc)]

@ #294
there is no triggering package (except linux kernel 3.2.x series).
simply boot from a ubuntu live cd/usb with no updates at all and your system will hard freeze ;-)
I also have a system with intel hd 4000 graphics... with Linux 3.4 everything works great and stable.

[Brendan Brigham (brigham)]

I've added a bug report, specifically stating hard freezes in Unity 3d, 2d working fine, and stating use of dedicated graphics card.
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1012916

[Tobias Newe (t-newe)]

Solved ..!

..so I had the same Problem with a Ati Radeon 5700 HD GFX-Card and AMD-Drivers installed ... in my way it was the Compiz ...
I removed all self-made Options in the Compiz-CCSM and reseted it to the default, after that all was normal again, no freezes ...
It must be some extra Options in Compiz-CCSM that, I think that Unity 3D did not like !!! ...

regards ..

Tobias Newe

[Brendan Brigham (brigham)]

For those with dedicated Nvidia GC's, Nvidia has apparently fixed their drivers. I couldn't use them previously due to lack of multiple monitor support but they now work, which solved the constant hard freezes for me instantly. I've been pushing it running videos on both screens while recording hd video from my webcam without a single problem.
It's looking like Nouveau has the issue ?

They've changed the bug report I linked to two posts up to reflect it...
affects: unity (Ubuntu) → xserver-xorg-video-nouveau (Ubuntu)
Changed in xserver-xorg-video-nouveau (Ubuntu):
status: Incomplete → Confirmed

[pureblood (freeseek)]

I want to mention that after following the suggestion at #274 (i915.i915_enable_rc6=0) and #280 (i915.i915_enable_fbc=0), my Dell Vostro V131 with Sandy Bridge and HD 3000 has not hard crashed (no mouse movement, no SysRq, no ssh) for about a week using kernel 3.4.1 (available at http://kernel.ubuntu.com/~kernel-ppa/mainline/) while before I used to get 2-3 crashes a day. I am not sure at this point what exactly is making a difference (it could have been an update for what I know). I promise I will try to revert the settings and pinpoint what is fixing it for me. But reporting it now to let other people know that there is hope.

[z (steveriley-deactivatedaccount-deactivatedaccount)]

Well, on day five with kernel 3.5rc2 (and _rc6=0 and _fbc=0), I finally experienced a freeze. During the middle a VoIP call. So the root cause of this nasty bug *still* appears unsolved.

QUESTION FOR ALL: has anyone experienced this problem while using a machine that has *no* external USB devices attached?

[Mason Green (mason-green)]

I'm having the same problem on Ubuntu 12.04 x64, on a Dell Studio 1569 notebook. My system hangs/freezes after a few hours without fail.

I managed to take a photo of the screen dump:
http://imageshack.us/photo/my-images/214/crasheg.png/

Any ideas?

[Willem Hart (willem-csport)]

#301 - Steve... Yes, I have removed all my USB devices, including USB speakers and USB wireless Logitech mouse, and so far so good. (I also plugged the USB speakers back briefly, causing a freeze within a minute or two). "So far so good" = +- 2 hours of video streaming, which, like I say, otherwise causes a freeze within minutes.

Oh, for those who might be interested - on a HP Compaq 6715b, AMD Turion 64 and related...

[z (steveriley-deactivatedaccount-deactivatedaccount)]

Hey... I know that two anecdotes don't make for good data, but it sure looks like Willem's experience matches mine. I wonder if the root cause is somehow USB-related?

I hope more people experiment with this. Let's see if we can figure out a trend!

[Danny Goodall (danny-onebloke)]

@Steve Riley, well I'd make that 3 data points. If you look at #279 my issue is USB-related. Although for me it seems to be Ubuntu falling out with the USB hub in my docking station.

Out of the docking station, or with USB devices plugged into the laptop and not the docking station, and I'm fine. With a USB device in the docking station USB it will hang within 5 minutes 99% of the time.

This is totally reproducible, and it typically only takes 5 minutes to see if a problem still exists so I'm a good candidate for a test-report-fix cycle.

[Blaine (frikker)]

Hi everyone. I had this same issue w/ my HD4000 Intel i7 laptop. Upgrading to kernel 3.3.7 solved it for me.
from here: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.3.7-precise/

Hope this helps.

[nwb (nygel)]

Get this folks. I had this exact same issue with 10.04 and just "lived with it" for 2 years. The only difference was that everything would freeze for about 5 seconds then the screen turned a bunch of colors and then go black. If music was playing it would skip like a record. Tried to fix it but never got anywhere. Recently, the time (and money) came to upgrade my system.

I replaced the mobo and cpu and mem and fresh install of 12.04. Still got the freeze. I thought to myself, "Must be a piece of hardware from my old system." Replaced everyting piece by piece and still got freezes. So today I have an i5 3570K | Asus P8z77 | 8 gig Corsair xms3 | no graphics card | 60 GB SSD | (2) 120 GB HDD | 700 wat PSU and am at my wits end about this.

Please fix this. I am die-hard Ubuntu.

[Timo Aaltonen (tjaalton)]

Everyone with an ivybridge (and using the integrated gpu, others don't bother) look at bug 999910, fix is pending in the -27.4x series.

Sandybridge users (again, ati/nvidia users don't bother) can enable precise-proposed and upgrade the kernel to -26.40, there are plenty of fixes. And if you still see issues with this kernel, file a _new_ bug!

[Kevin LeBlanc (leblanc-kevin-u)]

I've also stumbled upon another possible cure due to the fact that I REALLY wanted to use KXStudio again (is the only distro that JACK will run on my laptop!!!) and the only version that has a low-latency kernel is the current one.

The kernel that's used in this is actually slightly older, namely 3.2.0-23. Again, I'm using the low-latency kernel, so I don't know if this makes any difference. However, the fact is I've been using KXStudio 12.04 (KDE GUI) all night and have not had one single hard freeze. I tried newer kernels and didn't get any love from them.

Again, I'm using a Dell Latitude D620 with an Intel Core 2 processor, integrated graphics (3D capable, but kinda lower rung... can't even play Fallout 3 :( ), Sigmatel 9200 soundcard, 3 GB RAM. Nothing fancy.

I'll give it a week then get back to you all.

[Andreu Correa Casablanca (castarco)]

I have the same problem. In the atachment there is many info about my system.

[André Karell Contreras Jiménez (inu-core)]

I'm affected by this bug and what i'm noticing is that the bug is producing when I interact with software, when other software is loading, mainly in the first minutes when the machine is already loggin into my session (for example: skype is loading and go to start firefox and moving into the tabs or load two programs and load another one, somethings like this. Not always of course). I hope this is useful.

[Andy Brook (javahollic)]

OK, enough is enough, still not fixed for me, I've given it a month or more. This is the first time I've had to actually abandon a release, I can't take the crashes I'm seeing every 20minutes.

I don't underestimate the complexity of locating faults like this, but its been a month and I can't take the disruption ;( so its back to 11.10 for me, See you at 12.10 :/

[yurx cherio (cherio)]

Both of my hard drives in RAID 1 (mirror) started failing. I suspect because I had to frequently hard-reset the machine :(

My freezes stopped (hopefully) after I uninstalled VirtualBox downloaded from the Oracle web-site and installed the one from the standard Ubuntu repository.

[Shabang (theshabang)]

I have similar problem.
But my mouse moves but do not launches any event (click, etc...). I can switch to another TTY and restart X, and everything work nice until next freeze.

I am using an core i7 laptop with 8GB RAM and Radeon HD6770M graphic card.

It freezes a lot!!!

[sally-ann barbera (sallybarbera)]

I am using an acer aspire 55536G
I upgraded to 12.04 from the update manager and it's been freezing on average 6 times per 2 hour session ever since. Cursor moves but that's all. Not sure what to do to fix this and I am a computer novice...have no idea what all of you are talking about, but I just want this fixed :( what can Ido??? *sob*

[yurx cherio (cherio)]

This already cost me $200 to purchase new hard drives. Every time I hard-reset the machine my bad sector count climbs up and both SATA drives are reporting "IMMINENT FAILURE" status. Desktop Ubuntu is becoming a joke. Is there a way to send a link to this bug to Mark Shuttleworth?

[Todor Chamurliyski (ze3rax)]

Ubuntu 12.04 64-bit
kernel 3.2.0-25-generic
graphics - NVidia

My laptop constantly freezes as it outputs the last sound produces for example with no keyboard or mouse support. This is the 1st case when watching movie with VLC and opening images or browser in the background. The second one occurs while browsing and watching flash video on YouTube - the machine feels like working except the display goes black with green horizontal lines with a small quadrat in the bottom right side of the screen.
In those 2 cases only hard restart helps problem to get solved.

[milton hagler (miltonh26)]

Are other Ubuntu flavors also being impacted? How about Kubuntu, Pinguy and other desktops such as LXDE, XFCE. Perhaps this can help narrow the problem down. I've experienced the hanging problem apparently randomly and without USB devices attached. It seems to happen most when I'm using Firefox 13.0. The mouse cursor still moves but no keyboard and cannot click on anything. Also I've had the windows title bar disappear repeatedly. Sometimes I can make it recover, but usually not and more recently when I do a Unity reset (unity --reset) thes script hangs and never finishes executing when it used to work. When I crash the script the system locks up and I have to hard reboot to recover.

Asus U44S
Intel(R) Core(TM) i7-2640M CPU @ 2.80GHz
Intel® Sandybridge Mobile
Nvidia Optimus (with Bumblebee)
Kernal: 3.2.0-25-generic
Ubuntu 12..04 x64 - Unity 3D

[S. Christian Collins (s-chriscollins)]

milton: My roommate's Kubuntu laptop was freezing up until I upgraded his system to a later kernel, as suggested in one of the comments.

[z (steveriley-deactivatedaccount-deactivatedaccount)]

@milton (#318): Yes, the freeze happens in other flavors. I'm running Kubuntu and it happens on my T520.

Since you can move your mouse cursor, your problem is a different one than the complete freeze reported here (and also in bug 999910).

[pureblood (freeseek)]

Provided that it is likely that people in this forum are affected by different bugs, I will share my own experience. I have been using in the last weeks kernel 3.4.1 (available at http://kernel.ubuntu.com/~kernel-ppa/mainline/) on a Dell Vostro V131 with Sandy Bridge and HD 3000. With the following default kernel parameters (/etc/default/grub):
1) quiet splash pcie_aspm=force i915.i915_enable_rc6=1
the system hangs (no mouse movements, no SysRq, no shh) within ~12 hours of operation. Changing to:
2) quiet splash pcie_aspm=force i915.i915_enable_rc6=1 i915.i915_enable_fbc=0
the system hangs within ~12 hours of operation. Changing to:
3) quiet splash pcie_aspm=force i915.i915_enable_rc6=0 i915.i915_enable_fbc=0
The system does not hang anymore even after several days of operation. It does seem like the combination of i915.i915_enable_rc6=0 and i915.i915_enable_fbc=0 completely fixes the issue for me.

Here is the current output of "for file in /sys/module/i915/parameters/*; do echo -en $file"\t"; sudo cat $file; done":
/sys/module/i915/parameters/enable_hangcheck Y
/sys/module/i915/parameters/fbpercrtc 0
/sys/module/i915/parameters/i915_enable_fbc 0
/sys/module/i915/parameters/i915_enable_ppgtt -1
/sys/module/i915/parameters/i915_enable_rc6 0
/sys/module/i915/parameters/lvds_downclock 0
/sys/module/i915/parameters/lvds_use_ssc -1
/sys/module/i915/parameters/modeset -1
/sys/module/i915/parameters/panel_ignore_lid 0
/sys/module/i915/parameters/powersave 1
/sys/module/i915/parameters/reset Y
/sys/module/i915/parameters/semaphores -1
/sys/module/i915/parameters/vbt_sdvo_panel_type -1
It seems a plausible explanation is that there is something from the i915 driver triggering a GPU hang not correctly resolved. Could it be that this has to do with overheating and so it cannot be boiled down to a specific piece of code? I would be curios to see and hear if other people get it fixed with the same kernel parameters.

[milton hagler (miltonh26)]

Thanks Christian for the comment. I've been contemplating upgrading my kernel also but am a bit leery of using a
not-yet-released kernel (i.e. still in beta). Sure would like to solve this though because it seems to happen at the
most inopportune times and my friends think I'm crazy for not using Windows, which I refuse to do..

Thanks again,
Milton

On 06/24/2012 09:14 PM, S. Christian Collins wrote:
> milton: My roommate's Kubuntu laptop was freezing up until I upgraded
> his system to a later kernel, as suggested in one of the comments.
>

[damo65 (damo65)]

Playing an h264 mp4 in Movie Player was 100% successful in complete (I had to unplug my PC to reboot!) freeze. I mean, no-one's ever going to use Ubuntu for that, are they?!
Most of the other freezes have been mild by comparison (just need to hit the restart).
Updated my NVidia driver, didn't fix the problem.
Updated the Kernel to 3.3.6, and, so far, no problems. I have even managed to play the offending video!
Follow the instructions in #91, with the obvious sudo prefix where required.

[Chelmite (steve-kelem)]

My fresh installation of 12.04 on my HP Touchsmart (x86_64), with nVidia graphics freezes within one minute of logging in.
It doesn't matter if I run any applications or not...the system will freeze.
I can move the mouse, but I cannot type anything, e.g., to get a console, and nothing responds to clicking.
(The keyboard worked long enough for me to type the admin password, open a shell and type "ifconfig eth0" to find my ip address.)

In the minute before the freeze, I ran software updates, but there are no new updates to install.
I got the ip address of the computer, but I don't have ssh configured yet on that computer, so I can't ssh into it (if it's still running and if it's only the display that's frozen. I don't know.)

I have no idea what to file this bug under. It doesn't work long enough to find out.

Any guidance?

(Meanwhile, my family thinks I'm nuts for insisting that we run Linux!)

[Kevin LeBlanc (leblanc-kevin-u)]

It's pretty much been a week and I'm pleased to inform you guys that staying on Linux kernel 3.2.0-23 won't freeze the computer. Just make sure you're not using the 'pae' kernel because that seems to be part of the problem, unless you really, really need it. It doesn't need to be the lowlatency kernel, obviously. This works with both Ubuntu and Kubuntu. One time I mistakenly kept the 'pae' and it froze my system, so this is why I will be stressing to NOT USE THE 'PAE'.

In order to do this, you need to go onto Synaptic Package Manager and completely remove any and all occurrences of the 3.2.0-25 kernel and install the 3.2.0-23 kernel, image and header. Again, NOT THE 'PAE'!! All you'd need to do is have Synaptic look for "3.2.0-25" and then "3.2.0-23" and you should be golden. Then, when you reboot, go into GRUB and make sure the kernel is correct. You may need to go into the "Previous Linux Versions" in order to find the older kernel. If this is the case, then a step was missed.

I will say that I've had a lot more reliability with the low latency kernel, and will give a more detailed report about the older generic kernel. It did freeze once, but I was doing a SMART test on my hard drive at the time.

[Kevin LeBlanc (leblanc-kevin-u)]

UPDATE: The generic kernel is a bust. It froze again when testing the hard drive with the Disk Utility, and this morning it froze while I was reading a fanfiction via Firefox - nothing more. At any rate, the 3.2.0-23-lowlatency kernel has been very reliable and hasn't frozen on me once.

So all of you Ubunters looking for a cure for what ails you and your freeze-happy compy, I've had absolutely wonderful results from the 3.2.0-23-lowlatency kernel. Disregard what I said about the generic kernel.

If you want to know why I think this is, I have no idea. I know more about popcorn kernels than Linux kernels.

[Michael Helsvig (micski)]

It seems, that Kevin found a work-a-round solution to this major step back in the once so proud Linux stability. He mentiones, that a 3.2.0-23 kernel does not freeze. What is the exact procedure to roll back the useless kernel version to the stable kernel version?

[Kevin LeBlanc (leblanc-kevin-u)]

Michael:

To clarify, it is the 3.2.0-23-lowlatency kernel that doesn't crash. The generic kernel does.

The exact procedure is to go into Synaptic Package Manager (install it if you don't have it), search for all instances of 3.2.0-25 and have it removed. The next thing to do is to search for the 3.2.0-23 lowlatency kernel, taking care to avoid the PAE kernel unless you're running a 64 bit system., and install:

linux-headers-3.2.0-23
linux-headers-3.2.0-23-lowlatency
linux-image-3.2.0-23-lowlatency

You will definitely need to restart after that. After you restart, check the 'System' tab on your System Monitor. If everything went well, it should say this: "Kernel Linux 3.2.0-23-lowlatency".

It is absolutely imperative that I stress that it is ONLY THE LOW LATENCY KERNEL that hasn't crashed on me. So take care to only install the low latency kernel and not the generic kernel.

[Hessian DeJesus (damianoj-deactivatedaccount)]

Kevin LeBlanc, I have a very similar Machine, Dell D610, I915 Chipset, 1 Gig Ram, 80 Gig HDD. I was about to format and go back to vista or 7. I will try your excellent detailed instructions and report back. My freezes seem to only occur with FF 13 open and when I press the super key, or dash home button. I am running a totally up to date clean install of 12.04 32 bit. My temps are good (range from 40-55 C). Odd thing is does not always happen, but when it does the KB is totally locked, there is no flashin disk activity light, the USB and touchpad are able to move the mouse but I can not get any of the click button to do anything. I am running 3.2.0-25-generic-pae. I closely watch system monitor and never go above 50% usage Memory and 20% usage of my 1 GIG swap partition. Peace

[Kevin LeBlanc (leblanc-kevin-u)]

Hessian:

It's my pleasure, friend. It was quite accidental, since I was planning on having this be a portable studio and the only distro/remix which JACK will work with is KXStudio, and only the current version has a low latency and a realtime kernel. As it turned out, the low latency kernel cured the problem.

Everyone please, try this and let people know if this works for you.

Be well!

[Jeremy LaCroix (j-jlacroix)]

I found this bug report today while researching the possibility of trying out Ubuntu again after leaving it a long time ago, and noticed the "Won't Fix" status. Unbelievable! I thought this was supposed to be an LTS release?

The reasons why I stopped using Ubuntu have started coming back to me. I guess getting the developers to take ownership of problems is still an exercise in futility just like it used to be. I'll take another look when 12.10 comes out.

[Brains (brains)]

Anybody who tried repro in a VM? I was wondering about this.

Ever since the problem, I moved to Fedora, which runs stable, but I prefer Ubuntu's look & feel... :/

Did anyone already try reproducing the error in a VM / fixing it by updating the VM's kernel?

I'll try it anyway one of these days...

[berend (berenddeboer)]

I think also we have a list of different bugs here. I'm on a standard Precise 32 bit: symptoms are lockup of X. Can ssh in from another computer.

I followed one of the suggestions here to reset the Unity settings. Back to default, and then simply re-entered the settings I would like to have. System has been stable for a few hours now (usually it would lockup every hour). Hopefully this helps someone.

[Hanine HAMZIOUI (hanynowsky)]

That is what I did, long last month. I thought at first that the upgrade
from Ubuntu kernel 23 to 24 fixed the freezes I used to have (Hard freezes
that requires hard reboot); but I actually I recall I rest Unity before
updating the kernel back then:

unity --reset && compiz --replace && sudo lightdm restart

My system is a Dell XSP 15 L502X AMD 64bits.
*--------------------------*

On Thu, Jun 28, 2012 at 3:02 AM, berend <email address hidden> wrote:

> I think also we have a list of different bugs here. I'm on a standard
> Precise 32 bit: symptoms are lockup of X. Can ssh in from another
> computer.
>
> I followed one of the suggestions here to reset the Unity settings. Back
> to default, and then simply re-entered the settings I would like to
> have. System has been stable for a few hours now (usually it would
> lockup every hour). Hopefully this helps someone.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/993187
>
> Title:
> ubuntu 12.04 completely freezes frequently.
>
> To manage notifications about this bug go to:
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[Jeremy LaCroix (j-jlacroix)]

In regards to 332, I was able to reproduce it in a VM.

[Chowno (chowno)]

Hello everyone, I was playing around with this bug earlier today and I believe I've made some progress as locating it. By chance I disabled power management for my monitor, Ubuntu 12.04 has no screen saver so I didn't worry about that, in order to watch a movie without interruption. As luck would have it whenever I enable power management for my monitor I have the video problem; yet when I disable it the problem vanishes. I am currently using the Xorg-edgers ppa to have a heavily updated version of the open source ATI/AMD driver and I experience no issues anymore. Also, this ppa installed 3.5 kernel which appears to be behaving quite well. Even flash plays at full screen now which is amazing. So as a possible band-aid until the problem is fixed I would suggest disabling power management for your monitor - much easier than recompiling a kernel or wading through a git tree. Hope this helps! There wasn't any error messages generated for those interested - I experience the problem just like everyone else...

System Specs:
AMD Sempron 2600+ (oh yeah! smokin')
ATI Radeon HD 3650

[Shabang (theshabang)]

I have freezing frequently at Ubuntu 12.04 using Gnome-Shell. Everything freezes but the mouse, but it is useless because do not create none event by clicking. It just moves.

I Can press CTRL + ALT + [1...6] to change TTY and sometimes I can restart GDM and everything works fine. But sometimes is useless.

My xserver-xorg-video-intel is version 2:2.17.0-1ubuntu4
My AMD fglrx driver is 12.6 (but it also freezes with 12.4)

Computer information:
Intel Core i7 2670QM with intel HD 3000 Graphic integrated
AMD Radeon HD 6770M
HP dv6 laptop

[Chowno (chowno)]

Hello again, please disregard my comment above. Watching Hulu at fullscreen caused a lockup. Again no errors... One last thing - a question really. Does anyone else notice that the system clock goes haywire whenever this happens? It is really funny to watch as the minutes fly by like half-seconds, and for a brief moment when I hit the power button a dialog came up asking me how I wanted to shut down - I think it timed out to suspend but the time counted down so quickly I missed the preselected option. Well back to square one I guess. :)

[Hessian DeJesus (damianoj-deactivatedaccount)]

HUGE kudos to Kevin LeBlanc, my system is stable thanks to his solution. See post 329 above for details. Now if I could just play flash videos in FF 13 without my temps soaring to 70 C.. (my work around is to use my ASUS with win7 (LOL)
"You may need to go into the "Previous Linux Versions" in order to find the older kernel. If this is the case, then a step was missed."
I must have missed a step but having to do 1 extra key stroke after power on to have a stable OS is a very small price to pay!

[Kevin LeBlanc (leblanc-kevin-u)]

I'm glad my solution helped you, Hessian. Basically, if you have to access GRUB to get the older kernel, then the only step you missed was removing the 3.2.0-25 kernel, as well as the 3.2.0-23-generic. No biggie.

You're absolutely right, though; a few extra keystrokes is a small sacrifice to have a fully-working computer.

[S. Christian Collins (s-chriscollins)]

Chowno: System clock goes crazy, huh? This is a total stab in the dark, but what happens if you add the following parameter to your Grub bootline?: clocksource=hpet

[Jeremy LaCroix (j-jlacroix)]

Chowno: Just because your system froze again, it doesn't mean that your power management solution didn't work. I am suffering from another bug where power management will constantly re-enable itself. You'll see this by running "xset -q" and it will show dpms as enabled, even though you disabled it. I recommend looking at that before discounting your own solution.

[Chowno (chowno)]

Hello again, following S. Christian Collins' instructions I placed the clocksource=hpet command into the default grub sequence (which seems to only get more complicated as grub versions increase) but I am not entirely sure how to check if it is active. I have all of the debug stuff in dmesg available by using xdiagnose to insert the appropriate kernel debugging commands at boot time, but I only see a 'kernel command line' article that gives the kernel options from grub and no mention thereafter of a clock source. It didn't throw an error or say it wasn't using it so it must be doing something.

As to power management, I ran 'xset -q' as Jeremy LaCroix recommends and I can say that DPMS is enabled but that its event timers are all set to 0 so I imagine that is effectively off. I'll try adding a monitor section explicitly disabling DPMS in my 90-custom.conf file from the /usr/share/X11/xorg.conf.d directory.

I'll try to make my system crash some more and report back what happens. Thanks for the suggestions!

[Jeremy LaCroix (j-jlacroix)]

Chowno, if dpms shows enabled, then it is enabled. On mine, sometimes it will show 0 seconds and literally blank out if I don't continue to move the mouse (though on yours this obviously isn't the case). With mine, I've used the trick in xorg.conf.d to disable it too, but it still re-enables itself. One time it was disabled for a week, but it eventually came back. Another time, it only stayed disabled for an hour. With the dpms bug it's literally iimpossible to keep dpms disabled, no matter what you do. I'm still fighting with it.

[S. Christian Collins (s-chriscollins)]

Chowno, issuing the following command will tell you which clock source is being used. The first line is the available clock sources, and the second line is the currently active clock source:

cat /sys/devices/system/clocksource/clocksource0/*

On my system, this returns:
tsc hpet acpi_pm
hpet

I had to switch to hpet since the tsc timing source is inaccurate on my system and caused system instability.

[Chowno (chowno)]

Okay I'm back. The results are not very good... The clocksource=hpet unfortunately did not have any effect and it seems that power management is also not effecting the freezes - I went so far as to use the mysterious (even to Xorg) "NoPM" option in the ServerFlags section. I'm going to try Kevin LeBlanc's idea of using a lowlatency kernel (specifically 3.2.0.23.20 in the version info under synaptic) and I'll see if this helps. Crossing my fingers!

[Chowno (chowno)]

So I used the lowlatency kernel and got an authentic kernel panic when playing an h.264 video through vlc (using the XVideo output). So either the problem persists there or it is something else. I'm kind of running out of ideas on what to test and how to approach this problem. Anyone got an idea?

[Stephane (stehem)]

My laptop running 12.04 freezes once per hour, it does not seem to do so when watching videos with xbmc or gaming but when browsing. I tried using Chrome instead of Firefox, i tried using kernels 3.3.6 and 3.3.7 but it still keeps hard freezing. I have used Ubuntu for 5 or 6 years now and i must say each new version has been significantly worse, i do not care about Unity or glitches or bugs, this is free software after all, but i do care about system stability. "ubuntu 12.04 freeze" returns half a million result in Google, this has gone on for some weeks now, is there a some info somewhere about something being done about this? I hate Apple but buying a Mac seems more enticing everyday, i am just fed up with this shit.

[Pedro Alves (pmgalves)]

For what it's worth, there's a suggestion in this thread that worked for me:

Setting in grub.conf: i915.i915_enable_rc6=0 i915.i915_enable_fbc=0 (instead of =1 on both) just made my computer come back from "windows mode"

[Marcelo Toscani Brandão (mtbrandao)]

Xubuntu 12.04, Nvidia Drivers
Random freezes, nothing answers.
Can't move mouse, can't CTRL+ALT+F1, can't SysRq.

Sometimes it freezes on the first 15 minutes, sometimes it goes on hours without freeze.

Nothing appears on log also.
It's the last normal line on logs, then log is just updated during boot.

If audio is playing, the audio loops the last few miliseconds, as in an normal crash.

Just noticed it after the last kernel update (3.2.0-26).
Coincidentally, on the same day I installed some packages (k3b, including a lot of KDE libraries)

I'm using the last kernel (3.2.0-25), but I still haven't tested enough to say for sure it was the kernel.

[Jeremy LaCroix (j-jlacroix)]

I have a feeling this bug is about to become very popular.

[Brains (brains)]

@351: it already is and canonical keeps quiet...

[Tim Kowalsky (akropolis)]

I also have this problem (complete system freeze up - no mouse or anything responding.)

I haven't had time to try to actively troubleshoot the issue, though it's been happening to me for at least two to three weeks. At first I thought I must have some failing piece of hardware. Then I noticed a common denominator that seemed really weird to me.

Here's what I've found to contribute:
If I do not use a web browser, my computer does not crash. If I use any web browser I've tried, my system will crash at some point. Firefox does it. Chromium does it. NetSurf does it. Konqueror does it.

Since this started, I have yet to have a crash if I do not open any web browsers. I haven't made any changes to power management, or tried a different kernel. Just stopped using graphical web browsers on this machine.

System resource usage isn't an issue. I can run a Virtualbox VM with a full Windows 2008 R2 and SharePoint plus SQL Server, without any problems. I have left my system running for the better part of two days right now with no lockups. If I start using a graphical web browser, I can predict with some certainty, my system will crash within a matter of minutes.

My system:
Ubuntu 12.04 with KDE running on Xorg 11.0
AMD Phenom 9800 Quad core CPU
8 GB DDR2 800
NVIDIA GeForce GTS 250 graphics
Running graphics driver version 295.49

I have noticed that viewing a video in the web browser is almost a sure fire way to cause the lockup almost immediately. The lockups happen without watching videos (but with the web browser in use), too.

Has anyone tested to see if the Flash player might be part of the problem?

A final thought... it absolutely sucks to Google this issue, only to find this page with the "won't fix" status on this issue. This is not my first Ubuntu system. If there's no way to correct this issue, this may be my last Ubuntu system.

[Jeremy LaCroix (j-jlacroix)]

@Tim:
I completely agree. I am currently using Arch Linux. I love it. I've been considering trying out Kubuntu again, since Arch seems to be a moving target all the time. However, with bugs like this, there's no way I can consider it. Even if it does get fixed, it will only be fixed due to user outcry and not any form of quality standards (which seem to be completely absent). On the Xubuntu VM I have installed, I've had this lockup with just Leafpad and Thunar open.

I honestly feel that if it was an employee that marked a bug of this magnitude as "WONTFIX", they should be fired. If it was a volunteer that did it, they should be urged to stop contributing. If their heart is not in this distro any longer, they should find something they are passionate about and enjoy more. Sweeping an issue like this under the rug is extremely damaging not only to the reputation of this distribution, but Linux as a whole.

I am more than saddened, I am disgusted by this. If the most popular Linux distribution out there has practically zero quality assurance, we're all screwed.

[Brains (brains)]

@Tim: I second that. It happens immediately during web browsing. I only tried Firefox & Chromium.

@Jeremy: I second that as well. I switched to Fedora because of this mess. I promoted Ubuntu in the past, but have become really afraid to do so... this bug makes the machine utterly unusable. I'd rather recommend users to stick to their virus- and trojan-infested Windows install. It's slow, but at least a LOT more stable than machines having this issue...

[Victor (victor-pillac)]

I updated to the 3.4 kernel following the instructions in #91 and have experienced no crash after 6h.

I guess the fix should be backported to the current kernel.

[Chowno (chowno)]

I am VERY to report that the instructions given by #91, installing the 3.3.6 kernel, completely resolves the problem. I am using the non-pae kernel and the stock xorg packages. Initially I was using edgers to get access to the newer ati drivers (which work quite well if it weren't for this bug) and the 3.5.0 kernel they use must be tainted with this bug as well, or it is some other stability problem inherent to that ppa. So to reiterate - I reinstalled Ubuntu 12.04, fully updated it and followed thread #91 to resolve the issue. Can this get fast-tracked to the mainstream updates? It seems silly to sit on it when so many people are effected by this bug. Thanks for all of your help everyone! :) This is what Linux is all about!!!

[ncdas (ncdas18)]

ubuntu 12.04 lts having many problems like 1. video play back not smooth in any player. no 2. utube video play back not smooth
choppy and sticky instead of having good internet speed-----in my host xpsp3 machine no such issues are found. no3. vcd copy/paste not at all possible after installing proper codecs. no 4. update manager is unable to update properly some times
at the middle of updates stops functioning. no5. after downloading all updates some times failed to install those downloaded updates. my ubuntu installed side by side windows xp machine having 1.5 gb of ram and intel4 processor. my xp machine functions properly without having any sorts of problem.internet browsing very fast and smooth in xp but i am facing all sorts of problem in ubuntu---noting happened +ve instead of regular updates installed.

[Tim Kowalsky (akropolis)]

If you want to know who changed this to a "Won't Fix" status, click the "see full activity log" link. Or I can save you the trouble... Bryce Harrington
on June 2nd.

"Won't Fix" is supposed to mean "Doesn't fit with project plans." That's either clearly not true in this case, or I'd be VERY curious to know how it is true.

[Tim Kowalsky (akropolis)]

New information. I just now had another one of these freeze ups.
Symptoms:
Mouse moves but nothing happens if I click anywhere.
Keyboard is completely unresponsive.
I cannot go to a TTY.

I tried to ping my Ubuntu box from a laptop. I found I could ping the Ubuntu box.

I tried to telnet to the Ubuntu box. Success.
I logged in over telnet and did a ps -a

Ubuntu 12.04 LTS
Speedy login: tim
Password:
Last login: Wed Jun 27 12:26:14 EDT 2012 on tty1
Welcome to Ubuntu 12.04 LTS (GNU/Linux 3.5.0-3-generic x86_64)

 * Documentation: https://help.ubuntu.com/

  System information as of Wed Jul 4 15:46:27 EDT 2012

  System load: 1.9 Processes: 223
  Usage of /: 41.9% of 18.52GB Users logged in: 1
  Memory usage: 44% IP address for eth0: 10.0.2.2
  Swap usage: 0% IP address for eth1: 192.168.0.2

  => There are 2 zombie processes.

  Graph this data and manage this system at https://landscape.canonical.com/

PID TTY TIME CMD
    1 ? 00:00:00 init
    2 ? 00:00:00 kthreadd
    3 ? 00:00:02 ksoftirqd/0
    5 ? 00:00:00 kworker/u:0
    6 ? 00:00:00 migration/0
    7 ? 00:00:00 watchdog/0
    8 ? 00:00:00 migration/1
   10 ? 00:00:07 ksoftirqd/1
   11 ? 00:00:00 watchdog/1
   12 ? 00:00:00 migration/2
   14 ? 00:00:01 ksoftirqd/2
   15 ? 00:00:00 watchdog/2
   16 ? 00:00:00 migration/3
   18 ? 00:00:01 ksoftirqd/3
   19 ? 00:00:00 watchdog/3
   20 ? 00:00:00 cpuset
   21 ? 00:00:00 khelper
   22 ? 00:00:00 kdevtmpfs
   23 ? 00:00:00 netns
   25 ? 00:00:00 sync_supers
   26 ? 00:00:00 bdi-default
   27 ? 00:00:00 kintegrityd
   28 ? 00:00:00 kblockd
   29 ? 00:00:00 ata_sff
   30 ? 00:00:00 khubd
   31 ? 00:00:00 md
   57 ? 00:00:00 khungtaskd
   58 ? 00:00:03 kswapd0
   59 ? 00:00:00 ksmd
   60 ? 00:00:00 khugepaged
   61 ? 00:00:00 fsnotify_mark
   62 ? 00:00:00 ecryptfs-kthrea
   63 ? 00:00:00 crypto
   72 ? 00:00:00 kthrotld
   84 ? 00:00:00 binder
  103 ? 00:00:00 deferwq
  104 ? 00:00:00 charger_manager
  105 ? 00:00:00 devfreq_wq
  234 ? 00:00:00 firewire
  247 ? 00:00:01 scsi_eh_0
  250 ? 00:00:00 scsi_eh_1
  267 ? 00:00:00 scsi_eh_2
  271 ? 00:00:00 scsi_eh_3
  288 ? 00:00:00 kworker/u:4
  293 ? 00:00:00 scsi_eh_4
  319 ? 00:00:00 scsi_eh_5
  322 ? 00:00:00 scsi_eh_6
  324 ? 00:00:00 scsi_eh_7
  366 ? 00:00:00 scsi_eh_8
  367 ? 00:00:10 usb-storage
  374 ? 00:00:00 scsi_eh_9
  375 ? 00:00:07 usb-storage
  393 ? 00:00:03 jbd2/sda3-8
  394 ? 00:00:00 ext4-dio-unwrit
  481 ? 00:00:00 upstart-udev-br
  485 ? 00:00:00 udevd
  800 ? 00:00:00 edac-poller
  830 ? 00:00:00 kpsmoused
  841 ? 00:00:00 kvm-irqfd-clean
  851 ? 00:00:00 hci0
  864 ? 00:00:00 hd-audio0
  923 ? 00:00:00 upstart-socket-
  998 ? 00:00:01 jbd2/sdb1-8
  999 ? 00:...

[Steve Hayes (aerosteve-h)]

Why is this marked as "Won't Fix"... I basically can't use my Linux computer because it's constantly freezing and this "Doesn't fit with the project plans, sorry."

Nice!

I'll be changing OS now because this bug has been unresolved for 2 months.

[z (steveriley-deactivatedaccount-deactivatedaccount)]

@Steve Hayes (#361): unfortunately, in its present state, this bug report has become unmanageable. There are too many variations in systems and reported symptoms for anyone to try to make sense of out what's here. Bug 999910 is tracking a similar issue, but ONLY for:

* systems that freeze completely (no mouse movement, no clock second hand, nothing working at all)
* use Intel graphics
* have an Ivy Bridge chip (but also applies to Sandy Bridge, in a way)

[Jeremy LaCroix (j-jlacroix)]

@Steve Riley: No offense, but this is ridiculous. You're assuming that just because the symptoms are a bit different, that we're dealing with more than one bug. It's not out of the question to consider that one bug could affect different systems different ways. This line of thinking may be what's holding you back and the reason why no results have been achieved. There is one thing in common though, a kernel update fixes it for everyone here that has tried it, regardless of differing symptoms.

[z (steveriley-deactivatedaccount-deactivatedaccount)]

Nothing's holding me back...not sure what you mean by that?

If you look through all the comments in this bug, you'll see that the variety of systems and symptoms is so varied that it's difficult for the developers to find anything common. Some people experience complete and total freezes, where every process stops: no mouse, no clock, no ability to SSH into the box, total dead-ness. Others experience something less than a total freeze: mouse still moves, can access via SSH. Some people have Intel graphics. Some people have AMD or nVidia. Some people seem to relate the freeze to USB peripheral activity.

Also, I don't think it's correct that the kernel update has fixed the problem for *everyone*. I've tried every single kernel, and all of them have frozen up at one point.

Given all that, it's reasonable to state that this particular bug report is probably not too useful anymore. I'm not denying that there's a problem. But I can't believe that a single bug is responsible for everything that's been reported here.

[szbab (szbab-club)]

Hello
Sorry for my English (translated by Google)
I built and sold computers mainly Ubuntu.

Many comments have nothing to do with the bug that affects us.
(black screen etc ...) Some wifi and Ethernet cards can also cause the system freeze.
But then these are the new processor with the new chipset!

Finally here's what I can bring as track.
The gel system is done primarily using the browser (firefox, chrome ...) Sometimes evince!
More mouse or keyboard, so brutally shutdown.

The equipment:
Gigabyte, Asus, Asrock, MSI chipset B75 H77 Z77
Processor Ivy Bridge and Sandy Bridge (no problem for them under the former Z68 chipset B75 H67)
The problem is so new motherboard chipset backwards compatible Sandy and Ivy bridge and use the integrated graphics card (HD2000, HD2500, HD3000, HD4000)

I do not understand what Canonical can not afford to buy a motherboard and a processor of the third generation to see for themselves the bug.
And corrected as quickly as possible.

The net full of testimony here are some examples:
http://partiallysanedeveloper.blogspot.fr/2012/05/ivy-bridge-hd4000-linux-freeze.html
http://forums.linuxmint.com/viewtopic.php?f=191&t=102158
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/999910

[Andre (ajx)]

@szbab: you are referencing Bug #999910. Have you tried the patched kernel as mentioned in comment #55 in Bug #999910 ? It apperently fixes the problem for most users.

[Tomasz Ostrowski (tostrowskii)]

@Andre

Come on, I am a regular user. I have no idea how to switch kernels. I might find it on google, but I am not aware of consequences and if something goes wrong I won't be able to roll back.

If the solution works, maybe it could be patched as a system update so that everyone can apply it safely.

PS. I just can't leave with those system freezes, it happens during my daily work, i.e. skype calls :(

Thanks

[Hessian DeJesus (damianoj-deactivatedaccount)]

Tomasz Ostrowski see #328 above, I am not new to computers but a novice to Linux and I was able to do it. As a side benefit I am now confident using Synaptic Package manager, It was the last thing I installed after removing Ubuntu Software Center. I also did a system image using ReDO backup prior to any changes but thanks to Kevin LeBlanc's excellent instructions I had no problems.
Does anyone here know if I am creating an image to an external USB HDD is there a "best" file system to have the drive formatted to? I will be using the external for full images only - no sharing with other OS's.

[Jeremy LaCroix (j-jlacroix)]

@steve: It's not outside the realm of possibility that a single bug can affect differing chipsets and video cards in different ways. Perhaps some chipsets react worse than others. Has any progress been made? Closed-minded thinking helps no one.

[conor oshields (cmoshields7)]

So I used to have complete system freezes as well. I used to think it was tied to video card drivers, but then after several complete reinstalls of Ubuntu 12.04 I found the cause of the problem, at least for me.

I run a 64 bit AMD (1.6 dual core) laptop with Windows 7 and Ubuntu 12.04 dual booting. I have the 200mb partition, a part for win7, a part for linux, and then a part for everything else. I have 3 gigs of ram, if it matters.

I thought it was coincidence at first, but then after several tests I've concluded that Win7 system resume feature is the cause of the problem. Ubuntu would freeze, completely, right after login or at the login screen, or even a few minutes later, until I've completely logged out of and shut down Win7.

Hope that helps, but I dont think everyone with this problem is dual booting, or has a setup like mine.

Also, Grub2 boots before MBR, if that makes a difference.

[Jeremy LaCroix (j-jlacroix)]

For me it freezes even in a VM by itself, with only Thunar, leafpad, and a terminal window open.

[Tomasz Ostrowski (tostrowskii)]

Ok, do you think that this issue will be solved in the near future, or the general adivice for the users is to backup their systems and start switching kernels?

[Stephane (stehem)]

This bug does not only affect Intel chipsets, my AMD Fusion laptop freezes just fine.

To the people considering trying newer kernels, here is what it did for me, 3.3.6 and 3.3.7 made my system even more instable, it kept freezing, kernel 3.5 made it impossible to use Unity 3D and forced Unity 2D on me. So the kernel thing may work for some people but it did not achieve much for me.

Several people have observed these freezes only seem to occur when browsing, here is what i did, i sudo apt-purged flash, installed the FlashAid Firefox extension which basically installs the best version for your system (64bit in my case) and applies some tweaks, i haven't had a single freeze since i did that last week.

[Hessian DeJesus (damianoj-deactivatedaccount)]

In addition to the suggestion in #328, I also disabled java script in FF 13. Edit- Preferences- Content. I always have done a similar tweak with windows & I did it in Ubuntu just out of habit. No freezes under moderate usage for almost 2 weeks now!
I doubt this matters but I created 4 partitions when I last did my last fresh install - boot - swap- 2 file system. Then the kernel roll back.
(I had been using 2 partitions with the "standard PAE kernel" ) and had many freezes.
Thanks Stehem, I am about to dual boot win 7 and 12.04 on a modern 64 bit system, your tip will come in handy! =)

[Eric Gregory (eric-yorba)]

My system suffers a complete freeze ~2x per day. I'm running the FOSS nVidia driver. I can confirm that the freezes happen both with Unity 2D and Unity 3D.

I've noticed it seems to happen most often while (or after) playing audio streamed over the internet, either on YouTube or Rhythmbox.

[Michael Helsvig (micski)]

After the upgrade from 11.10 to 12.04, I have daily freezes for no apparent reason; One freeze can come after a fresh boot with no open programs - and another freeze can come five hours after working with many programs. There is never a single action, that causes a freeze. What is causing this? How is that even possible? I have never had any problems like this in any version of Ubuntu on the same hardware. Every freeze is a complete lock up of the system with sudden squared garbage all over the screen. Not even the mouse nor keyboard responds. I have not been able to find any errors, prior to a freeze, in the system log. Could it be related to the encrypted file system option (eCryptfs)?

[zeusstl (zeusstl)]

#370 gets a huge +1
My machine was crashing 1-2 minute after literally every single boot for two weeks. Now its been running fine for 24 hours including suspend, hibernation, and reboot.

If you have a dual boot (win7 + ubuntu 12.04), make sure to fully log out of windows before trying to log into ubuntu. You must actually use the log out feature to log out your windows user before you shut down windows.

I'm wondering how many people on this bug post have a dual boot?

(AMD Dual-Core Processor C60, 1.33GHz, 4GB DDR3, ati wrestler radeon hd 6290, 500GB HDD)

[quequotion (quequotion)]

Questions:

!. What on earth would a bug this serious be marked "Won't fix"?
-the issue clearly exists as evident by this bug report, multiple duplicates, forum posts and blog entries accross the web

2. Would it work to just blacklist the drm-intel module?
post 91 >It's a Kernel Bug (drm-intel).

3. Anyone else have bad luck with 3.4.0?
-it worked for a few days, but the crashes came back and became more frequent.
-i haven't tried the recommended 3.3.6 yet.
-the stabe 3.4.4 kernel is unavailable...

[quequotion (quequotion)]

*1. Why

Someday, launchpad will allow people to fix typos.... i hope.....

[Sean Lynch (lynchseanm)]

I had the problem with the complete freeze (no mouse, keyboard, etc).

The solution in https://bugs.launchpad.net/bugs/999910 fixes this for me. See comments #63 - #66.

[Matt Miller (spam2000)]

I am also getting this problem...

* I can confirm that at random my system will completely lock up.
* I can not access my laptop via SSH on other computers on my home network once the freeze happens.
* I can not get a virtual console.

Computer:
OS: Ubuntu 12.04 64bit fresh install
Thinkpad T530
16ram
128gig SSD
intel ivy bridge 3210
Intel HD 4000

[Paul (rudnickp)]

I am also getting this problem...

Computer:
OS: Ubuntu 12.04 64bit fresh install (encrypt home directory option selected)
ASUS P8Z77-VLK
16MB RAM
intel ivy bridge 3570K
Intel HD 4000

[Andre (ajx)]

@Matt @Paul: Your bug is Bug #999910 (Ivy Bride). Please follow the instructions there to install the proposed kernel (comment #63). If you do not have the confidence to work with the proposed repository, just wait 2 weeks or so. Linux 3.2.0-27 will fix your issue.

[John Stewart (cane-cubo)]

I am also getting complete lockups, no mouse movement.

Fresh install of 12.04 64-bit with all updates.

Computer: HP DM1Z with AMD E-450 CPU and ATI graphics.

I have to say, after challenges with 11.04 and 11.10 I thought surely that 12.04 LTS would be a good release for me. Alas. Back to the Mac it is.

[Paul (rudnickp)]

So far so good w/ Linux 3.2.0-27.

Paul

On Fri, Jul 13, 2012 at 11:46 PM, Andre <email address hidden> wrote:
> @Matt @Paul: Your bug is Bug #999910 (Ivy Bride). Please follow the
> instructions there to install the proposed kernel (comment #63). If you
> do not have the confidence to work with the proposed repository, just
> wait 2 weeks or so. Linux 3.2.0-27 will fix your issue.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/993187
>
> Title:
> ubuntu 12.04 completely freezes frequently.
>
> Status in “linux” package in Ubuntu:
> Won't Fix
> Status in “xserver-xorg-video-intel” package in Ubuntu:
> Won't Fix
> Status in “linux” source package in Precise:
> Won't Fix
> Status in “xserver-xorg-video-intel” source package in Precise:
> Won't Fix
>
> Bug description:
> Update: 6/12/2012
> This bug is about a complete system lock-up. No other TTYs can be started. Mouse doesn't move. Keyboard doesn't react. The only solution is hard reset.
>
> Seems to happen on a variety of configurations, including nVidia, ATI
> and Intel graphics.
>
> If you are still able to TTY or SSH into other sessions, move the
> mouse or use the keyboard, file another bug.
>
> Thx. Joris V. (brains).
>
> Update: 5/21/2012
> Updating the kernel to 3.3.6 as suggested by Michael in #91, the system seems stable, no freezes yet in 5-6 hrs of using and watching videos for couple of hrs.
>
> Original description:
> I recently installed newly released ubuntu 12.04 LTS 64 bit version on my desktop. And it is frequently freezing, for the first few hours it ran smoothly and when I started watching videos it started freezing randomly.
> I have to use hard restart every time.
> Initially it was only during videos but now even during normal browsing it is freezing.
>
> I am using on board graphics and do not have any graphics card
> installed.
>
> Can someone please help me here, I really love the new looks of 12.04
> and it bugs me not being able to use :(
>
> Below is my hardware configuration:
> Processor: Intel CORE i3 processor (2nd generation)
> Board: Intel® Desktop Board DH67BL
> Ram: 4GB
> Graphics: On board
> HDD: 500 GB
>
> Please let me know if you need more information, or any specific logs
> I can capture (and how).
>
> Thanks,
> Ketan Patil
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/993187/+subscriptions

[Hermann W. (hwehner)]

Same here. My DIY-System (i5, Asus P8Z77V-Pro) freezes completely, no mouse, no keys, last bits of audio keep repeating. There is nothing relevant in the logs.
Replacing the Xorg-intel driver with fbdev fixes the problem.
By the way, other distributions seem to have the same problem. I installed a fresh debian wheezy, which also freezes without obvious reason until I change the X-Driver.

Hermann

[Stephane (stehem)]

Activating Proposed in order to install 3.2.0-27 completely fucked up my system, i started getting all kinds of splice errors on downloaded files and even more crashing, spent my Sunday morning reinstalling the steaming pile that is 12.04
I also tried installing Debian, but, can you believe this shit, the installer does not work with laptop keyboards, looked up the FAQ, "oh yeah we know it seems to happen with laptops try with APIC/ASPIC off". I really wonder why i am wasting my time on this shit, after 6 years of Ubuntu my next machine will be a Macbook.

[pep (atreyv)]

I have the Bug #999910 and I'm trying the -27 proposed kernel. So far so good.
i7 3612QM (ivy bridge)
Nvidia GT630M / intel HD4000 (optimus enabled by Bumblebee 3.0)

@387
Stephane, after enabling the proposed updates, you should do:
sudo apt-get install linux-generic/precise-proposed linux-headers-generic/precise-proposed
and not the all upgradable packages!
After this you can disable the proposed repository.

[[e-mail] (luiz112010)]

Stephane, as you said on #387, the Ubuntu have a lot of problems IN A LTS RELEASE.

I can't believe this, the people that used 10.04 and has upgraded to 12.04 is a lot disappointed, sometimes the system freezes, sometimes the system log off ramdomly.

I can't buy a Macbook or iMac, and i really hope that the 12.04 issues will be solved, but I'm a lot disappointed with this last Ubuntu release.

[David Huber (david-huber)]

This version is so bad and no one from Ubuntu is even looking in to it. I understand that it is not related to Ubuntu code but they should at least acknowledge this issue. I have completely switched back to Windows 7. The last time I booted Ubuntu I was getting an error that CPU core #1 has frozen for 12 seconds it would then do it over and over and not boot. Good Bye Linux for good. Ubuntu is awful and your support is awful

[Bram Kuijper (terabyte)]

Same here. My Dell XPS 1430 has the same issue: ever since the upgrade to Ubuntu 12.04 it frequently freezes completely, no mouse, no keys, last bits of audio keep repeating.

Note that I don't have an Ivy bridge processor, just an Intel Core 2 Duo CPU P8700 @ 2.53GHz and GeForce 9400M G/integrated/SSE2 graphics card. The freeze often (but not always) happens when I use flash.

I first thought it was some temperature-related issue, but after installing sensord I did not find any abnormal temperatures being logged.

[Romuald (romu70)]

Same for me, ramdom freezes, only hard reset works, no mouse, no keyboard.

Dell XPS15 L521 with Core i7 Ivy Bridge
Intel HD4000 (NVidia is shut down by Bumblebee).

[Romuald (romu70)]

Little update, I'm running Gnome-shell et not Unity.

[Alfagulf (alfagulf)]

Hmmm, Interesting.

Mean while Dell is promoting Ubuntu:

"Linux comes to ultrabooks: Dell to preload OS on XPS 13
The open-source operating system is going to land this fall on one of Dell's best ultrabook offerings."

http://news.cnet.com/8301-1001_3-57476335-92/linux-comes-to-ultrabooks-dell-to-preload-os-on-xps-13/

May be Dell users can get better Ubuntu support from Dell?!!

[weimin (weiminli2010)]

Hi, everyone. I am here to provide a solution. this solution may work, may not work. I am not a pro bug dealer, and I tried to trace the freeze, but no outcome. just make me more furious about my new pc.

I have inter i7 core, 12 processors, each one 1200 MHz. Geforce 210 1GB DDR3.
now the system is ubuntu 11.10, and kernel 3.3.0.

I have tried many method to stabilize the freeze, which has no reactions on keyboard and mouse. so I have to reboot from hard disk every time. Also, I had dual system, with Windows 7 alongside. And I had the feeling that it was so related to the driver conflicts with graphic itself. Because the freeze happened every time when I try to browse. And it was very worse when I use YouTube. if some one had experienced the same, you could try the following.

Replace Firefox by Chrome.

I have used it for one day with 20 webpage working at the same time, no freeze

[New Ubunty (new-ubunty)]

Have the same problem - system freezes completely, only way out is a hard reboot :(
It's random, often while doing Shotwell, sometime Google Earth, few times even while ejecting a SD drive! I also had a few random warnings that Compiz crashed (maybe related ?!).

Here are my specs:
Brand new Desktop from System76
Ubuntu 12.04 LTS 64 bit
Kernel: 3.2.0-26-generic
3rd Generation Intel Core i5 3570K ( 3.40GHz - 6MB cache - 4 Cores - HD Graphics 4000 )
8 GB DDR3 - 1600 MHz
2 Tb HDD

[pureblood (freeseek)]

I still have not experienced a single GPU hang since I added the options "i915.i915_enable_rc6=0 i915.i915_enable_fbc=0" to the grub command line. This website mentions problems which might relate to what some people in this forum are experiencing:
http://intellinuxgraphics.org/2011Q4.html
In particular, I wonder if the "i915.semaphores=1" kernel option can help anybody here, as nobody has suggested it before.

This might be a useful read as well:
http://www.phoronix.com/scan.php?page=article&item=intel_i915_power

[Felix Engemann (felix-engemann)]

@pureblood

is it a sandy or ivy-bridge you using ? Workaround you described described helped me on 11.10 with sandy-bridge CPUs.

[quequotion (quequotion)]

I never use my intel gpu anyway, since I have an nvidia graphics card in a desktop pc.

So finally, having had enough of this miserable bug, i blacklisted the intel gpu.

I blacklisted the i915 module like this, in /etc/modprobe.d/blacklist.conf:

blacklist i915
blacklist i915_drm_kms_helper

The second line may be redundant (that module should not load without i915).

I feel as though a great and terrible weight has been lifted.

The i915 module is broken, and I don't know how to fix it, but at least I am free of these crashes.

[Mike Stupalov (landy2005)]

Blacklisting module i915 is not the right way, for those who use integrated graphics Intel, this most modern laptops.

I have a laptop with a processor IvyBridge with integrated graphics Intel 4000 and a separate video card ATI Radeon HD 7660M.
After installation -27 proposed kernel problem is solved.
$ uname -a
Linux mks-nb 3.2.0-27-generic #43-Ubuntu SMP Fri Jul 6 14:25:57 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

[quequotion (quequotion)]

I do wish there were a better way, but having tried -27-42, 43, 44, several upstream kernels, adding "i915.i915_enable_rc6=0", "i915.i915_enable_fbc=0", and "i915.semaphores=1" to grub, etc with no success whatsoever, I was left without any choice but to give up on the intel module.

Indeed, this is not a good idea for intel laptops.

It does work for desktops, so long as you don't need the onboard GPU.

[Jeremy LaCroix (j-jlacroix)]

I ran the updates in my VM and it looks like kernel -27 is in the repos. I don't remember though if I enabled the proposed repository. Isn't this the kernel that's supposed to fix it?

[milton hagler (miltonh26)]

After following the advice of pureblood with post #397 I have not experienced a crash since for several days now after I applied only the first switch recommendation "i915.i915_enable_rc6=0".

http://www.phoronix.com/scan.php?page=article&item=intel_i915_power

My machine is an Asus U44S with Nvidia Optimus hybrid graphics using Bumblebee (https://github.com/Bumblebee-Project/Bumblebee/wiki) to enable driver support for both graphics cards. Running the kernel 3.3.7-030307-generic.

[Pierrick (pierriko)]

Ubuntu 12.04 32 bits w/ xserver-xorg-video-nouveau
Intel(R) Core(TM) i5-2410M CPU @ 2.30GHz
NVIDIA Corporation GF119 [Quadro NVS 4200M]
Dell Latitude E6520

attached: log from the following commands:

dmesg >> ubuntu-freeze.log
lspci >> ubuntu-freeze.log
lsusb >> ubuntu-freeze.log
cat /proc/cpuinfo >> ubuntu-freeze.log

[Pierrick (pierriko)]

forgot to add: Mouse & Keyboard doesnot respond (CTRL+ALT+F[1,7]) usualy happens using Google Chrome, but not only.

[Prashant L Rao (prashant-rao)]

I have the same problem with both Unity 3D and Gnome Classic. My solution is to log into Gnome Classic (no effects) where Metacity is the window manager. That works fine. Any session with Compiz in it, be it Unity 3D or Gnome Classic results in a total freeze including TTY1-6. I'm running 12.04 on a Vostro 1014 with Intel graphics.

[themacmeister (themacmeister)]

Confirm same issue with Dell Inspiron N5110 -- Core i7 Sand Bridge Mobile. Xubuntu 12.04. Tried all kernels from 3.2 through 3.5rc1. Same issue.

Rebuilt all Intel drivers from git source -- same issue.

NOT using Compiz
KERNEL panics from iwlwifi/mac80211 fixed after recompiling.
NOT using Gnome or Gnome Shell or unity.
Using Bumblebee for Optimus graphics.

libva vaapi working beautifully.
vdpau not working?

I will try "i915.i915_enable_rc6=0" boot flag from above, and see how I go.

[IC Raibow (icrbow)]

Had that random freezing with Xubuntu/Xmonad. Changed radeon 5870 to nvidia 450 - still hangs. Reinstalled to 12.10 alpha3 - hangs.

Most frequently i'm playing some online music in chrome/flash player while it happens.

[Regression (gitsfans)]

I experimented various freezes/lockups with 12.10 but with Oneiric 11.10 and even Lucid LTS ( 10.04) too since a recent upgrade !

I had less problems since I upgrade firefox ( another deceptive one ) 14.01 and now 15... but it is another story...

It is really a shame... I agree with Hein (#130) "I completely lost my faith in Ubuntu- bug fixing"... But I will not moveback to Micr0$0ft ^^

I work offline with the old jaunty and karmic koala and I've got no problem ... voilà !

Update: So far so good with latest kernel 3.5 (3.5.0-6.6 quantal-proposed) ... but I guess it will freeze soon or later... and I willslowly move to another distro ;-'(

[IC Raibow (icrbow)]

I'm running on 12.10's kernel - 3.5.0-6-generic. And it gone down once already... ):

I've disabled flash and uninstalled flashplugin-installer and the uptime is climbing to 1 day.

[vadimo (michalgejdos-azet)]

The same on the Geforce Go 6100 (Asus A6M laptop). But only on Unity 3D. Unity 2D work fine.

My system is:
Linux Asus 3.2.0-26-generic #41-Ubuntu SMP Thu Jun 14 17:49:24 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

VGA:
VGA compatible controller: NVIDIA Corporation C51 [GeForce Go 6100] (rev a2)

On booth drivers:
- nvidia-current 295.40 from precise repo
- nvidia-current 295.59 from ppa

Older drivers not usable for me: very slow rendering

dmesg:
[ 1772.773575] NVRM: Xid (0000:00:05): 13, 0000 e0016100 0000008a 00000104 000091d7 00000002
[ 1772.777512] NVRM: Xid (0000:00:05): 9, Channel 00000020 Instance 00000000 Intr 00100000
[ 1772.781461] NVRM: Xid (0000:00:05): 9, Channel 00000020 Instance 00000000 Intr 00100000
[ 1772.785412] NVRM: Xid (0000:00:05): 9, Channel 00000020 Instance 00000000 Intr 00100000
[ 1772.789380] NVRM: Xid (0000:00:05): 9, Channel 00000020 Instance 00000000 Intr 00100000
[ 1772.793386] NVRM: Xid (0000:00:05): 9, Channel 00000020 Instance 00000000 Intr 00100000
[ 1772.797386] NVRM: Xid (0000:00:05): 9, Channel 00000020 Instance 00000000 Intr 00100000
[ 1772.801379] NVRM: Xid (0000:00:05): 9, Channel 00000020 Instance 00000000 Intr 00100000

PS: Is this duplicate of bug #1001007 ?

[Xavier Robin (jti-533g)]

Same on a Dell Latitude e6530 with an i7 3720M on Intel Graphics. I disabled Optimus (thus switching to the nvidia graphics) and didn't have any freeze since, so it looks related to the Intel HD 4000.

[Christophe Van Reusel (christophevr)]

Since a week now after latest upgrade ubuntu 12.04 also always crashes after a certain amount of time.

system asus mb P6X58-E WS,Intel core i7 990x, corsair vengeance 3 x 4GB ddr3 1600mhz.

drives 2 sdd corsair crucial 512 GB 2 WD 2002FAEX 2TB.

Crash seems to be related with sata. When running win 7 No crash OCCurs.

[Christophe Van Reusel (christophevr)]

This problem seems to occur one many modern system's.

it's not graphical related. But eigther I/0 related.

I think that a change somewhere into D-bus must be the cause

All graphic drivers are making a lot of use of hdd and so ......

[mean (fixounet)]

Just my 2 cents
I have this problem also (kubuntu/ Q6600 /64 bits/ precise)

A sure way for me to trigger this problem is creating an large avi (openDML file) from another large file (TS or mkv)

i.e. for example
read a 6 GB MKV file over the network and create a local or networked large openDML file.

It happens also with TS, basically any large files (several GB). The larger the file, the higher the probability.

It happens also when doing less io intensive stuff but much more rarely

Doing the openDML file trick is a 90% chance of deadlock

(and i have tried creating/reading from local HDD1, local SSD, NFS mount + memtest x86 to rule out faulty hdd/memory)

[yurx cherio (cherio)]

christophevr may onto something. At the time of freezing (before I switched to fedora) I was noticing that idle IO was jumping to 100%. At the same time my disk was quiet meaning it wasn't disk IO.

[IC Raibow (icrbow)]

I've just watched 17GB 1080p video and have copied 60GB of disk image for backup - not a hiccup.

[Matt Miller (paintitmatt)]

Processor: i5-3320M CPU @ 2.60GHz × 4
RAM: 8GB (2 x 4GB) DDR3 1600
Graphics: Intel HD Graphics
Storage: mSATA 60GB SATA II MLC Internal Solid State Drive (SSD) mounted as /
500GB Hard Disk Drive, 7200rpm mounted as /home
OS: Ubuntu Precise 64-bit

I was getting random crashes until last night when I installed the kernel from comment #91, and it's been stable since then.

BUT I've noticed some other weirdness since installing it. Most noticeably sometime cron jobs don't run and I have thins line in /etc/rc.local to dim the laptop's screen which doesn't work anymore, even when I switch back to the old kernel:

echo 0 > /sys/class/backlight/acpi_video0/brightness

[Mike Swyers (mjswyers)]

Hello,

As far as the desktop freezing I had it as well; its not with new hardware only as my old notebook is like 5 to 6 years old I think - can't remember its that old. Asus ZJ96s, 2.16 Core2Duo, 2 Gigs of Ram, and ATI Technologies Inc M56P [Radeon Mobility X1600] Graphics.

On this book the last couple LTS's has been solid except 12.04 64Bit; frequent freezes a couple times a day mostly with graphics intensive stuff, but always with able to access to the console, and I have to restart everything. Mostly with flash loaded in a browser or even an e-reader scrolling pages. Resources were not depleted by any means though.

I tried various kernals up to 3.4, 2D, but no difference; I can only use the open vid driver.

It left such a bad taste I went back to 10.04 and won't consider 12.04 again for this book, or any other computer till Its absolutely necessary - hopefully they will have things straitened out or its 10.04 to the death.

Like Ubuntu and Unity very much and would hate to abandon it.

[Dave Vree (hdave)]

@Mike (comment #419) - this issue is with Intel HD video, so the problem with out notebook is probably something else. I have a brand new laptop that was freezing, but the 3.3.6 kernel (comment #91) solved the problem completely.

[Christophe Van Reusel (christophevr)]

Ter Info

I just found the problem by me.

Crashes occured due to I/0 dropout on asus MB P6X58-E WS.
This happened about one time each hour. Pc worked fine during 9 months and sudden it's start freezing. It was not a real freeze. As I still had graphical screen and every program and service loaded into ram continued working until they required hd acces.

I'm working with crucial m4 512 gb ssd's.

Problem is solved by ugrading crucial m4 firmware to version 0000f At least now pc worked already 3 hours whitout any drop out of sata busses.

If persons who are working with ssd drives like me first try to upgrade the firmware.

[Steve (stupendoussteve-deactivatedaccount)]

If "every program and service loaded into ram continued working until they required hd acces" [sic] then it is not related to this bug, which is a hard freeze in which no program continues to function in relation to the Ivy Bridge video.

[quequotion (quequotion)]

Is anyone else having this bug on a desktop PC?

I was able to work around it by blacklisting i915 and using only my add-on graphics card.

If you have a destkop pc, and an add-on gpu (brand should be irrelevant) could you try this?

I think the problem is in the i915 driver, but we need conclusive testing or no progress will be made.

[quequotion (quequotion)]

Reported against intel to hopefully get some attention from the right people.

Oops on reporting against xf86-video-intel, although who knows? O_o

[Hein (hhanssen)]

Please not that this bug report seems to become a dead end. To many 'almost' the same problems.

When reporting bugs, it's better to be as specific as possible about the bug and the hardware on which this bug shows.

For those who have this:
- Complete freezes with only mouse pointer still moving
- Multiple times per hour
- Easily to invoke by using Firefox or Chromium webbrower or playing video

And having:
- Nvidia proprietary driver installed (the one provided by Ubuntu as recommended)
- A Nvidia Geforce card with shared memory, using a laptop
- Standard kernel (3.2) provided by Ubuntu installed

And:
Not suffering from this bug when de-activating the Nvidia driver and using the Noveau driver instead.

You are kindly invited to join me at bug # 1033263 if your problem is exactly the same as described above. All others are perhaps better off to exactly (re)formulate their problem as specific as possible and report their problem as a seperate bug.

First question from a kernel developer is to try kernel 3.5 with the above problem - does this solve the problem?

[ludovic halimi (metalkrapo)]

Hey everyone,

This bug affects me too. Everything stops working, the keyboard and mouse don't react at all. If there was a sound playing, it loops over the last fraction of seconds over and over again.

Here is my hardware configuration: http://www.ldlc.com/fiche/PB00130961.html
I don't have any Nvidia hardware so I think this is not related to Nvidia.

I am testing further, but it would seem that I am affected when I run Linux 3.2.0-27-generic but not when I run 3.2.0.23-lowlatency. Bad luck, I bought this laptop to work on music.

[Vincent (vincenttestbox)]

Im having the EXACT same thing as ludovic halimi, ive got an W150ER -> this link: http://www.bto.eu/html/configureer.asp?PartnerID=1&DisplayPartnerID=1&ProductID=557&lang=nl

Its seems something with the ivy bridge?

I have not this issue with 3.4.x kernel.

[Alexander Hartmaier (alex-hartmaier)]

I have the same issue on a Fujitsu S761 vPro notebook (http://www.fujitsu.com/de/products/computing/pc/notebooks-tablets/superior/lifebook-s761-vpro/index.html).

Why has this bug marked as no longer affecting intel?

[john smith (h1610115)]

I had this bug on my HP dm1 4xxx series notebook (AMD e-450 / radeon 6230m / BCM 4313).

I had full system lockup with no other option but hard reset. It occurs in other linux distributions also but Ubuntu suffered the most by a long shot.

I followed all the threads and tried many of the suggestions. Over two weeks I have tried 3.2, 3.4 and 3.5 kernel and had many many reinstalls. I have tried with/without proprietary amd catalyst drivers (as well as different versions) and with/without the proprietary broadcom drivers. I also tried various desktop environments. The problem persisted despite my efforts.

Most often, the computer would crash at high system loads, when the fan was just kicking in and the computer was hot.

However I believe I now have a workaround (working for 3 days without problem):

Disable the kernel thermal module with "thermal.off=1"

1. sudo gedit /etc/default/grub
from:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
to:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash thermal.off=1"

2. sudo update-grub

I found several sources for this workaround including: arch forums, ubuntu forums and the hpsupport forums.

If you disable the OS's control of the fan with this workaround then I would be careful that the BIOS is doing it's job correctly without the OS by paying attention to the heat of your laptop and by listening to the sound of the fans. Also, ensure that any useful fan control options are enabled in BIOS settings.

[Hein (hhanssen)]

@ john. Perhaps better to file another bug related to kernel(settings).
Verzonden vanaf mijn BlackBerry®-toestel

-----Original Message-----
From: john smith <email address hidden>
Sender: <email address hidden>
Date: Thu, 09 Aug 2012 00:37:41
To: <email address hidden>
Reply-to: Bug 993187 <email address hidden>
Subject: [Bug 993187] Re: ubuntu 12.04 completely freezes frequently.

I had this bug on my HP dm1 4xxx series notebook (AMD e-450 / radeon
6230m / BCM 4313).

I had full system lockup with no other option but hard reset. It occurs
in other linux distributions also but Ubuntu suffered the most by a long
shot.

I followed all the threads and tried many of the suggestions. Over two
weeks I have tried 3.2, 3.4 and 3.5 kernel and had many many reinstalls.
I have tried with/without proprietary amd catalyst drivers (as well as
different versions) and with/without the proprietary broadcom drivers. I
also tried various desktop environments. The problem persisted despite
my efforts.

Most often, the computer would crash at high system loads, when the fan
was just kicking in and the computer was hot.

However I believe I now have a workaround (working for 3 days without
problem):

Disable the kernel thermal module with "thermal.off=1"

1. sudo gedit /etc/default/grub
from:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
to:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash thermal.off=1"

2. sudo update-grub

I found several sources for this workaround including: arch forums,
ubuntu forums and the hpsupport forums.

If you disable the OS's control of the fan with this workaround then I
would be careful that the BIOS is doing it's job correctly without the
OS by paying attention to the heat of your laptop and by listening to
the sound of the fans. Also, ensure that any useful fan control options
are enabled in BIOS settings.

--
You received this bug notification because you are subscribed to the bug
report.
https://bugs.launchpad.net/bugs/993187

Title:
  ubuntu 12.04 completely freezes frequently.

Status in “linux” package in Ubuntu:
  Won't Fix
Status in “xserver-xorg-video-intel” package in Ubuntu:
  Won't Fix
Status in “linux” source package in Precise:
  Won't Fix
Status in “xserver-xorg-video-intel” source package in Precise:
  Won't Fix

Bug description:
  Update: 6/12/2012
  This bug is about a complete system lock-up. No other TTYs can be started. Mouse doesn't move. Keyboard doesn't react. The only solution is hard reset.

  Seems to happen on a variety of configurations, including nVidia, ATI
  and Intel graphics.

  If you are still able to TTY or SSH into other sessions, move the
  mouse or use the keyboard, file another bug.

  Thx. Joris V. (brains).

  Update: 5/21/2012
  Updating the kernel to 3.3.6 as suggested by Michael in #91, the system seems stable, no freezes yet in 5-6 hrs of using and watching videos for couple of hrs.

  Original description:
  I recently installed newly released ubuntu 12.04 LTS 64 bit version on my desktop. And it is frequently freezing, for the first few hours it ran smoothly and when I started watching videos it started freezi...

[[e-mail] (nuagebleu)]

My bug type: 'completely locked up' (No keyboard, no mouse, and I did lost files...) (also I'm sorry I can't not try to ssh I have no other computer at hand now)
Frequency: about 1 every 7 hours

Doesn't affect:
- glob2 playing for hours
Occurrences of the crash seems higher when using:
- Firefox or Google video or Skype or Intellij programming when I play music

Common on all my systems:
- 64 bits systems
- kde IDE / kubuntu
- Linux version 3.2.0-27-generic (buildd@allspice) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #43-Ubuntu SMP Fri Jul 6 14:25:57 UTC 2012

Unaffected desktop hardware:
- AMD Phenom II X6 1075T (64 Bit)
- AMD Radeon HD 6850
- 12 GB RAM
- Windows dual boot (see #370)

Affected laptop:
- i7-3610QM
- Intel HD 4000 (no discrete graphics)
- 8 GB RAM
- Linux only
- 03:00.2 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 0a)
- kernel/drivers/net/wireless/ath/ath9k/ath9k.ko

Other information I could give is that my changes overs the last months: (I had no issues before that)
- "apt-get update" style changes
- "apt-get upgrade" style changes
- google video installed
- Skype installed
- adobe flash is installed
- I also have random problems with sound, the audio-jack plus is working some weeks, and not working some.

[[e-mail] (nuagebleu)]

Hello, I just arrived to this bug and read all posts, took me 5 hours yet to compile a summary:

Summary of ideas that seem to have fixed, or improved the situation of some people:
 #91 (install kernel 3.3.6)
 #112 (choose the right nouveau driver)
 #117 (install kernel 3.4.0)
 #165 (sudo intel_reg_write 0x2120 '0x1206800' in /etc/rc.local)
 #279 (USB ports)
 #321 (combination of i915.i915_enable_rc6=0 and i915.i915_enable_fbc=0) (also in #349)
 #336 (disable monitor power management)
 #370 (Win7 dual boot)
 #373 (use flash aid)
 #429 (stop OS fan management)

Summary of the 3 types of bugs:
(Sorry, I might definitely be wrong, the amount of information is too large for my poor brain, I still spend quite some time reading the 430 posts, and re-reading many)

bug 1) bug that freezes the graphics, but the mouse pointer is still moving
   most can still access the console ctrl-alt-F1, but not always...
   can reboot through CTRL+ALT+SysRq REISUB
   typically happens once every 5 to 20 min, impossible to work (sometimes once a day: #20, sometimes at boot time: #79)
   looks strongly correlated to Nvidia proprietary drivers (many cases), but may also affects Nouveau drivers (#3, #20, #79, #149)
   moving to the console may hard-freeze it all
   it looks like there is nothing in /var/log/syslog
   Posts describe solutions by:
      - #112 (choose the right nouveau driver)
   Changing kernel doesn't seems to help
   These people should join this bug:
      Nvidia, Complete freezes with only mouse pointer still moving (Please read #425 for more precise)
      https://bugs.launchpad.net/bugs/1033263

bug 2) bug that freezes graphics and mouse
   last sound sample repeated continuously
   no mouse, no keyboard, no ctrl-alt-SysRq REISUB
   only reports about ssh not working, one post about ping working
   typically happens once every 1 to 8 hours
   looks correlated to SandyBridge and IvyBridge, but also affects people with: AMD Fusion (#373), Nvidia Nouveau (#277), ATI Radeon graphics with flgrx drivers (#49)
   some people have things in /var/log/syslog
   might loose data
   Posts describe solutions by:
      - using kernel 3.3.6 (#91), many success, but not always (see #120)
      - using kernel 3.4.0 (#117)
      - combination of i915.i915_enable_rc6=0 and i915.i915_enable_fbc=0 (#321), many success, but one (#401)
      - using Debian 6.0.5 (#124)
   These people should join this bug:
      IvyBridge, 64 bit System freezes (mouse, keyboard) (see #308)
      https://bugs.launchpad.net/bugs/999910
   Other comments:
      - Problem persists with regular Unity and Unity 2D desktop.
      - Problem does NOT occurr when using old Nvidia 8400GS discrete graphics card.

bug 3) bug that freezes graphics, but can still access the console ctrl-alt-F1
   post GC occurrence (5/6 ATI & 1/6 Xeon): ATI RV515GL, no proprietary driver; ATI Radeon X1400; ATI X1400; radeon X2300; Radeon HD 3200; VGA Xeon E3-1200 Processor Family Integrated Graphics Controller
   mouse might or might not move
   might completely freeze when going back to X
   might be related to compiz (#12)
   might loose data
   Interesting comments:
   - Still freezing, both with kernel 3.2....

[zigomir (zigomir)]

I have almost identical system with NuageBleu describing in post #431 and I got hard freezes with no other way than hard shutdown/reset.

I also use JetBrains software, Chrome and playing music when freeze happens.

My system:

Ubuntu 12.04 64bit (all updates installed)
Desktop computer specifications:

i7-3770K
Intel HD 4000 (CPU with GPU, no discrete graphics)
16GB ram
SSD

No other OS installed.

It might be the problem with Intel HD 4000 graphics.

[Tough Technology (mpugina)]

I have the following configuration on the desktop:

 ubuntu 12.04 32 bit with the 3.2.0-23-generic-pae kernel
 Network adapter Atheros Communications Inc. AR9227 Wireless Network Adapter (rev 01)

It runs fine with my hardwired lan adapter, but when I connect to my wireless network the screen freezes up and I have no mouse, keyboard access. My only option is to power off the box. I have tried multiple work arounds but none work. I have ordered another wireless network adapter since Atheros AR9227 has had simular reports on other sites. Has anyone found a work around? Are there any bug fixes in the works?

[Steve (stupendoussteve-deactivatedaccount)]

#434 - Your bug is not this bug. You should create a new bug to describe your issue, or look for one that already exists, such as bug 989566 or bug 919815. The endless stream of "Me too!" from completely unrelated configurations makes this bug impossible to accurately test and solve, hence "Won't Fix" status (see comment #246).

[Minimec (minimec)]

I do know that this is not a fix, but a workaround....

Those who are affected by the let's say 'pure Ivy Bridge Bug' (using the HD4000 internal GPU), which results in a random complete system freeze (bug #999910), should really try kernel 3.4.0 from the ubuntu kernel mainline (http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-precise/). This was also stated in comment #117 in this bug report.

That is the only kernel that made my system (i5 3570k/asrock z77 extreme6/ubuntu 12.04 64bit) stable for a few days now.

There is still a discussion going on, whether or not the proposed fix for bug #99910 (kernel 3.2.0.27 #44) is making the system stable...

[Kevin LeBlanc (leblanc-kevin-u)]

Hey all,

In addition to the 3.2.0-23-lowlatency kernel, I'm pleased to report that my Dell Latitude D620 HAS NOT CRASHED with the 3.3.7-030307-generic kernel. It had been running for almost six hours straight with not a single crash yesterday. The 3.4.0-030400-generic kernel did, though, after only a day.

I have not tried the 3.2.0-27-generic yet, and I have been tempted to do it. I just might install it in addition to the other kernels (I kept the 3.2.0-23-lowlatency as a backup just in case the 3.3.7 kernel didn't work out).

For instructions on installing new kernels, go to #328 where I give detailed instructions on how to do it.

So, to recap my experiences with the various kernels:

3.2.0-23-generic and generic-pae: crashes horribly
3.2.0-23-lowlatency and lowlatency-pae: no crashes. Tends to hog resources a bit, though.
3.2.0-24-generic: honestly, hadn't tried it yet, but am not exactly holding my breath
3.2.0-25-generic and generic-pae: crashes horribly
3.2.0-26, 3.2.0-27, or 3.2.0-29: hadn't tried any of them yet. I'm tempted to try them, though.
3.3.7-.030307-generic: works quite nicely so far. If it doesn't, I'll post it right here.
3.4.0-030400-generic: crashes horribly

[IC Raibow (icrbow)]

Phenom II x6, Radeon 5870 / Nvidia 450 - crashed on 12.04 and 12.10.

Since i've disabled and uninstalled flash i've got a 2 weeks of uptime.

Current kernel is 12.10's stock 3.5.0-6-generic.

[Kevin LeBlanc (leblanc-kevin-u)]

Isn't 12.10 still in the alpha stage?

[danrgmc (danrgmc-yahoo)]

@martin: Thank you! Even though my problem wasn't the same as yours, it seems to be working fine for me. I had been experiencing crashes every time I tried to watch a Youtube in 'HD mode'. The video would play for maybe 1 or 2 minutes then I would usually get a complete lockdown-no keyboard or mouse response. Sometimes I could reboot using 'reisub', but only if I attempted this immediately.I just finished watching about 15 mins. of the 'Slingshot Channel' without any problem.
  My system: Asus P7P55d-E mainboard
                       Intel I5-750 cpu
                       8gb. dual channel ram
                       Western Digital 'Caviar' 1tb. sata hard drive.
                       Nvidia GeForce 9800 GT gpu
                       Seasonic X-650 (i think) psu

                     dual boot Ubuntu 12.04-x86_64 and Windows 7 Professional
                     Firefox 14.0.1
                     Nvidia driver: 302.17
I need to emphasize that this only seemed to happen when I was watching Youtube videos. Other sources of HD videos weren't affected.

[Stu (stu-axon)]

Just bought a new computer, installed ubuntu 12.04 and it freezes.... just like *all* my other computers do/have:

First computer I noticed it on was a my old work 2009 mac mini.

My desktop, Intel Q9650 (Nvidia graphics card).

My old laptop AMD (ACER / ATI)

My new laptop (ASUS /ATI)

My work mac mini - 2012 mac mini.

The only thing that seems to be in common, is running ubuntu and firefox - then a hard freeze needing a reboot.

I'm quite up for finding a way of debugging this now...

[dynaguy (dynaguy)]

I am a Sysadmin and we have 20 workstations running Ubuntu. Most of them are still running V11.04. Two week ago I installed 3 new PC with 12.04 64bit and all 3 users reported random freeze up! All 3 PC use Unity 3D desktop with Nvidia card. One is i7 and the other two are Core2 6600.

[Aminda Suomalainen (mikaela)]

I am experiencing this issue too. I am not sure is it this issue, but Ubuntu sometimes fully freezes and even CTRL + ALT + SysRQ + REISUB doesn't do anything.

[Pierrick (pierriko)]

I checked in my syslog after many complete freeze (CTRL+ALT+Fx not
reacting), and i found this line for the 3rd time:

Aug 16 13:17:01 pierriko-dell CRON[10776]: (root) CMD ( cd / && run-parts
--report /etc/cron.hourly)

at the time of the freeze, but I've nothing in my crontab:

$ crontab -l
no crontab for pierriko
$ ll /etc/cron.hourly
total 20
drwxr-xr-x 2 root root 4096 Jul 11 15:08 ./
drwxr-xr-x 147 root root 12288 Aug 16 13:29 ../
-rw-r--r-- 1 root root 102 Apr 2 15:28 .placeholder
$ cat /etc/cron.hourly/.placeholder
# DO NOT EDIT OR REMOVE
# This file is a simple placeholder to keep dpkg from removing this
directory

Any idea?

Here is 3 line of my syslog where the 2nd one is blocking:

Aug 16 12:38:33 pierriko-dell dhclient: bound to 192.168.1.36 -- renewal in
2821 seconds. # <--- normal DHCP renewal
Aug 16 13:17:01 pierriko-dell CRON[10776]: (root) CMD ( cd / && run-parts
--report /etc/cron.hourly) # <--- time of freeze
Aug 16 13:25:34 pierriko-dell dhclient: DHCPREQUEST of 192.168.1.36 on
wlan0 to 192.168.1.1 port 67 # <--- time of reboot

[zaphodbblx (zaphodbblx)]

my system spec
Mesa DRI Intel(R) G33 x86/MMX/SSE2
precise 32 bit
linux 3.2.0.29 generic pae
GNOME 3.4.2

3gb RAM
Intel core2 duo E4600@2.40
im not getting crash reports from the incidents

[dynaguy (dynaguy)]

Yesterday I installed new released kernel 3.4.0 on all the 3 PC. also updated with new Nvidia 304.37 driver. After that, I haven't had any crash report from users.

[Luciano (bgf09)]

I faced this same problem.

Like dynaguy, I just updated my kernel and all is working well now : http://partiallysanedeveloper.blogspot.co.uk/2012/05/ivy-bridge-hd4000-linux-freeze.html?m=1

Maybe you would give it a try.

[redfox7691 (claudio-bizzarri)]

Some problem here:

Notebook Compaq NC8430
Ubuntu 12.04
Intel Core2 Duo T7200
3GB RAM
Radeon Mobility X1600

Unity 2D works perfectly, unity-3D freezes randomly. I've tried without success:
- upgrade kernel to 3.4.9 version;
- install lowlatency kernel;
- disable the kernel thermal module with "thermal.off=1".

May be "thermal.off=1" gave me a little more time before freezing, but I cannot be sure about it.

When unity-3d stops working I haven't any message from system, neither in var/log/syslog nor in dmesg.
Mouse pointer keeps moving but buttons have not effects. Every tasks is freezed, and I can only press CTRL ALT F1 and use "kill -9 -1" to return on login screen.

[Ramon (qq-ramon)]

RESOLVED FOR ME:

I had the same symptons of bug 1 as described in post #432 on my asrock 330 ION, ubuntu 12.04 playing flash in chrome.

I upgraded the nvidia driver from the ppa channel to version 302.17:

ii nvidia-current 302.17-0ubuntu1~precise~xup2 NVIDIA binary Xorg driver, kernel module and VDPAU library
ii nvidia-settings 302.17-0ubuntu1~precise~xup3 Tool of configuring the NVIDIA graphics driver

xbmc@mediacenter:~$ nvidia-smi -q -u
==============NVSMI LOG==============
Timestamp : Sun Aug 19 00:41:11 2012
Driver Version : 302.17
HIC Info : N/A
Attached Units : 0

I upgraded to the latest stable kernel 3.2.0-29 (no additional tweaking):
xbmc@mediacenter:~$ uname -a
Linux mediacenter 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:04:05 UTC 2012 i686 i686 i386 GNU/Linux

And I did not have any freeze any more.

I installed the nvidia driver from the ppa channel as described here:

http://askubuntu.com/questions/104527/how-do-i-install-the-latest-nvidia-drivers-via-the-additional-drivers-tool

It seems to be and issue with the nvidia driver in combination with de the kernel.

[Javierrmedina (javierrmedina)]

I can't believe that such critical bug/issue, is still causing troubles

I opened a thread in ubuntuforums.org, but nobody has an answer.

Same problem that anybody else: no mouse, no tty, no nothing but a complete freezed up system.

My Hardware:

Lenovo G570 laptop

I3 Sandy Bridge Processor

3GB RAM

Intel HD3000 graphics

OS: ubuntu 12.04
wm: Unity with no tweaks; only a new theme for it.

Some of the usual soft opened:

Apache, PHP & MySQL
Chromium
Firefox
Filezilla
Sublime Text 2

Applets / plugins

ubuntu one indicator
dropbox
weather indicator
caffeine
radiotray
unity webapps

This is not a minor bug. I'm in the middle of a job task and suddenly got a totally freezed system. No saved data, no chances to save anything... you're not wanting to be compared with windoze, isn't it?

[Pawel Kwasniewski (pawel-kw)]

This is just incredible... Such a bug and Won't Fix status. Well, go to hell Ubuntu - I think I will take the time and setup a system where I can work without fear of a sudden freez. Good work Ubuntu.

[Aminda Suomalainen (mikaela)]

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23.08.2012 17:14, Pawel Kwasniewski kirjoitti:
> Such a bug and Won't Fix status.

Have you read the comments? It's won't fix, because everyone are
describing different bugs and don't give enough information.
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[Michael Helsvig (micski)]

I can't believe, that not a single person in the Ubuntu development groups are able to reproduce this critical bug. 12.04 seems to be the sudden end of a great operating system. Now, it is back to other solutions, such as the rock solid FreeBSD.

[Brian Colburn (dodge-m37)]

Someone further up asked if anyone had a desktop affected by this problem. Yes.

HP Pavilian a1610n
AMD Athlon 64 X2 Dual Core 4200+ x2
NVIDIA accelerated graphics driver version 173
OS 32-bit
RAM 1 gb
Upgraded from 11.04 to 12.04LTS.
Only real modification done was to get rid of the crappy Unity desktop and revert to classic per below link, and this was done in 11.04 and remained functional when upgraded to 12.04LTS.
http://tombuntu.com/index.php/2011/09/11/install-the-classic-desktop-in-ubuntu-11-10/

11.04LTS was rock steady. Upgraded because I had hoped the problem with auto routing to random folders instead of last folder used had been addressed (which it hasn't).

Running Firefox version

Intermittent freezing of system when clicking on a link in Firefox. Eventually the mouse cursor unfreezes, but nothing else works except REISEB. No other keyboard command works. Problem happens from zero to several times a day.

Had to report this bug on my older 11.04 machine. System keeps freezing while trying to make report. Worse, discovered it was freezing when clicking icons to get system information, which it has not done before. I cannot even access the system logs without freezing, so I cannot include the logs here.

I'm going to try the upgraded driver options for NVIDIA. Don't know what else I can do at this point. I'm not versed well enough in upgrading the kernel per the above instructions. Will have to research that, but frankly I think reinstalling 11.04 makes better sense for me.

Editorial comment: So far the Unity versions have been a total wash for me. I don't want "Ubuntu Windows 7" or "Ubuntu iPad" eye candy, I want Ubuntu 11.04. Unless some issues in Unity are addressed and fixed, I'll either have to revert to 11.04 or look into Lubuntu. Sorry to get on the soapbox, but the people writing Ubuntu have forgotten why it was created in the first place. If you're going to copy Windoze, at least give us an easy option similar to Windoze "Switch to Classic Desktop View" and/or make the Unity desktop user configurable. It's not a freaking iPad.

[Brian Colburn (dodge-m37)]

Typo above, upgraded from 11.10, not 11.04.

[Brian Colburn (dodge-m37)]

It's been 9 hours now of constant use and no crashes.

Took these steps to update the NVIDIA display drivers:

Applications > System Tools > System Settings > Hardware > Additional Drivers.

When the driver search ends, it will show a list of drivers, which should include NVIDIA if your computer is so equipped.

Default setting after the 12.04LTS upgrade was:

NVIDIA accelerated graphics driver (version 173)

I selected the next option:

NVIDIA accelerated graphocs driver (post-release updates) (version 173-updates).

Activated, closed and rebooted.

Hopefully this has indeed solved the problem.

[Hein (hhanssen)]

There is a more recent bug report nvidia related pls post there
Verzonden vanaf mijn BlackBerry®-toestel

-----Original Message-----
From: Brian Colburn <email address hidden>
Sender: <email address hidden>
Date: Mon, 27 Aug 2012 05:26:11
To: <email address hidden>
Reply-to: Bug 993187 <email address hidden>
Subject: [Bug 993187] Re: ubuntu 12.04 completely freezes frequently.

It's been 9 hours now of constant use and no crashes.

Took these steps to update the NVIDIA display drivers:

Applications > System Tools > System Settings > Hardware > Additional
Drivers.

When the driver search ends, it will show a list of drivers, which
should include NVIDIA if your computer is so equipped.

Default setting after the 12.04LTS upgrade was:

NVIDIA accelerated graphics driver (version 173)

I selected the next option:

NVIDIA accelerated graphocs driver (post-release updates) (version
173-updates).

Activated, closed and rebooted.

Hopefully this has indeed solved the problem.

--
You received this bug notification because you are subscribed to the bug
report.
https://bugs.launchpad.net/bugs/993187

Title:
  ubuntu 12.04 completely freezes frequently.

Status in “linux” package in Ubuntu:
  Won't Fix
Status in “xserver-xorg-video-intel” package in Ubuntu:
  Won't Fix
Status in “linux” source package in Precise:
  Won't Fix
Status in “xserver-xorg-video-intel” source package in Precise:
  Won't Fix

Bug description:
  Update: 6/12/2012
  This bug is about a complete system lock-up. No other TTYs can be started. Mouse doesn't move. Keyboard doesn't react. The only solution is hard reset.

  Seems to happen on a variety of configurations, including nVidia, ATI
  and Intel graphics.

  If you are still able to TTY or SSH into other sessions, move the
  mouse or use the keyboard, file another bug.

  Thx. Joris V. (brains).

  Update: 5/21/2012
  Updating the kernel to 3.3.6 as suggested by Michael in #91, the system seems stable, no freezes yet in 5-6 hrs of using and watching videos for couple of hrs.

  Original description:
  I recently installed newly released ubuntu 12.04 LTS 64 bit version on my desktop. And it is frequently freezing, for the first few hours it ran smoothly and when I started watching videos it started freezing randomly.
  I have to use hard restart every time.
  Initially it was only during videos but now even during normal browsing it is freezing.

  I am using on board graphics and do not have any graphics card
  installed.

  Can someone please help me here, I really love the new looks of 12.04
  and it bugs me not being able to use :(

  Below is my hardware configuration:
  Processor: Intel CORE i3 processor (2nd generation)
  Board: Intel® Desktop Board DH67BL
  Ram: 4GB
  Graphics: On board
  HDD: 500 GB

  Please let me know if you need more information, or any specific logs
  I can capture (and how).

  Thanks,
  Ketan Patil

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/993187/+subscriptions

[cuby (cuby)]

Same here in a Dell Latitude E6430.
Linux maxwell 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:03:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

 description: VGA compatible controller
 product: Ivy Bridge Graphics Controller
 vendor: Intel Corporation
 physical id: 2
 bus info: pci@0000:00:02.0
 version: 09
 width: 64 bits
 clock: 33MHz
 capabilities: vga_controller bus_master cap_list rom
 configuration: driver=i915 latency=0

[Brian Colburn (dodge-m37)]

The NVIDIA setting did not correct the problem, though it went further (14 hours) without a freeze.

As far as the suggestion that this is not an NVIDIA problem, I read earlier in this thread that there was feedback it could be a video related problem. Whatever.

12.04LTS is a wash. Will probably revert to 11.04 at this point. 12.04LTS well and truly sucks.

[Hein (hhanssen)]

@ Brian Colburn

Please see also bug # 1033263 related to Nvidia Drivers.

My suggestion is to try the Nouveau drivers instead (deactiviting the Nvidia restricted drivers completely). My test system seems to run stable with this choice. Nouveau drivers work well as long as you don't need 3D games.

Other suggestion: try newer Nvidia drivers from PPA (technical: don't know if you're up to the challenge).

[Hein (hhanssen)]

For all using an Nvidia card / driver. Try Nouveau drivers. This could solve your stability issue. See bug # 1033263

[mike (mcalautt)]

I am not running a nvida card and this happens to me..
both problems.. sometimes I get mouse movement but I cant click or open anything..
other times a complete hang.
yesturday I turned the laptop on, after my desktop came up I went enable wireless and nothing was responding even though
the mouse was moving... happen 2 times in a row..
so I didnt even start anything and it came onto the desktop in that state.

lenovo thinkpad
Intel® Core™ i7-3520M CPU @ 2.90GHz × 4 64-bit
Linux 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:03:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

 cat /etc/issue
Ubuntu 12.04.1 LTS \n \l

Ive had the OS installed for about a month..

it did it today when I opened openshot to edit a video... it worked the 1st time..
I closed openshot and opened a new window.. I started making adjustments to the video and the entire
system froze.

[Jeremy LaCroix (j-jlacroix)]

I still firmly believe that the reason this bug has not been fixed is because the developers assume the different symptoms represent different bugs. It's entirely possible that the same bug could affect different chipsets/hardware combinations differently. To not at least consider this possibility is not only delusional, but weak troubleshooting.

This comment string is so long I've lost whether or not anyone has tried the latest in the 3.4.x kernel series. That is the latest kernel to be declared the next LTS release by the kernel team. I have mostly switched to Arch Linux (which uses a much newer kernel) and I've not had a single issue on any of my machines, on several different chipsets. Considering the LTS status of kernel 3.4, I highly recommend it to be considered for emergency adoption into 12.04 (after it is tested of course). Considering I haven't had this issue in Arch Linux, that only leaves two possibilities. One, an Ubuntu-specific code commit is causing the issue, or two, it's upstream with the kernel and a newer one should be considered.

[Hein (hhanssen)]

@ Jeremy and all others here.

It's important to split up this bug report/ file separate bugs for certain hardware configurations and concerning (suspected) problematic packages. This thread is too long and too fuzzy to be worked on by any developer. What should he / she test? Where to start? Which package is involved?

I've reported a bug report specific for my machine and related to Nvidia graphics driver and I was being helped: I've got a much much more stable system now with Nouveau drivers. Also be sure to make the appropriate dumps etc. ( http://www.cebuntu.com/how-to/how-to-report-bugs-from-terminal-in-ubuntu/ )

Others here may have problems related to Ivy bridge and certain kernelversion/ kernelmodules, others may suffer from a problem caused by whatever.

You really should stop screaming here and do what's right (post separate bugs against multiple packages).

I really don't agree that what we see here is weak troubleshooting. My experience is that you'll get help if (and only if) you post a specific bug, with dumps from your sytem and against a specific package.

[Alexey-Sandy (alexeysandy)]

<email address hidden>

[Stephane (stehem)]

I am really at the end of my patience here, my system is a E350 Sony laptop (AMD/HD6300), it has happily been freezing continuously for the past months almost daily, i tried everything, countless kernel variations, reinstalls, fucked around with Flash, with the thermal.off flag, manually installed catalyst drivers...this POS keeps freezing...i have wasted hours of my time on this, which leaves me with a really sour taste. The other day i was reading on how OSX allegedly killed the Linux desktop, well no shit.

[Tim Haw (ww3ib0sg9w-tim)]

I don't know If this will help identify the bug but I had the same problem on 64bit Ubuntu 12.04 running unity and gnome. I use this computer for work so out of desparation I tried Xubuntu 12.04 which works without any problems on the same system.

[philOSparta (phil-schaming)]

I have two Dell Inspiron 530 machines which I loaded Ubuntu 12.04 onto on August 1st.
It's taken a month + now to get down to the final problems.
I've got the total system lockup as mentioned in this link, but I've isolated it to Firefox on both machines.
Occasionally the mouse is moveable in a spastic erratic way, but it's impossible to get a terminal up to run top or any other diagnostic.

1. Firefox 15.0 takes 30 seconds to load on the initial load. Shut it down and try a reload and the system locks up.

2. If Firefox is the default browser, once loaded it will run all day without problems until you click on a link within another application like a link in an email in Thunderbird. Firefox, being the default browser, is called and locks the system. Or click on an HTML file within Nautilus and tell Nautilus to open it with Firefox. Lock the system. In these cases, if Chromium is the default browser, the system operates properly.

I'm not 100% sure there is no graphics card involvement, but Firefox sure seems to be part of the problem.

[htaed (nyima87tsering)]

i am having a similar problem.......except that i have an amd ati radeon graphic cards....i dont have problem with ubuntu but have problem with backtrack 5 r3...i use it via USB......boots normal but after 2 minutes or sometimes 1 or sometimes 5 minute the whole screen doesnt respond to mouse clicks or scroll....the mouse works perfectly bu the screen doesnt respond and when i use keyboard (example ctrl+W to close a tab) the screen responds sometimes but doesnt do anything sometimes....so once it freezed again and i just wanted to see if removing the usb while im still on the screen would do anything and when i did remove the usb, the screen display was on the same page when i was, before removing except that the mouse still moved or functioned normally.....so i think the problem is that my usb is loose sometimes or is it just a bug

[lubos (lubos-pazdera)]

Thanks philOSparta (phil-schaming). Not using firefox solved the problem for me.

[Martin Wildam (mwildam)]

Hi, also in my case (Dell Latitude E6530 - Canonical certified hardware) I experience lockup/freeze at least once a day (with nothing working, neither keyboard nor mouse - so only way is to hard switch-off) it seems to be related to Firefox 15.

[Pedro Alves (pmgalves)]

I find it hard to find that firefox is causing this - but for the ones that think it's the cause, can you please go to Preferences -> Advanced -> General Tab and disable / enable hardware acceleration to see if that could be the cause?

In this thread there seems to be different things at stake. On my case, the crashes stopped by setting i915.i915_enable_rc6=0 i915.i915_enable_fbc=0 in grub, and I'm a heavy user of firefox

[mike (mcalautt)]

I updated to kernel 3.3.6-030306-generic and its not freezing any more
however now I have a wireless connection that drops all the time... what is strange though, if I connect to my MIFI mobile hotspot its fine.. only drops with my wireless verizon modem..
worked fine before the kernel update.

[Junjie Wu (wujj)]

I have the same problem. It only randomly freezes when I have webpages actively playing flash videos (firefox and chrome). When the system freezes, I can't move my mouse or keyboard, existing terminal output also freezes and I can't even ssh into my machine.

In addition, my HDD LED keeps flashing, which means my disk should be spinning really hard. I've scanned my disk, but found no bad sector. I also mounted /tmp as tmpfs, and redirect firefox temp folder to /tmp. I believe flash buffer videos in /tmp as well (correct me if I am wrong). So I don't understand why my disk keeps spinning during the freeze...

[S. Christian Collins (s-chriscollins)]

Junjie, are you able to monitor either of the following while watching YouTube videos?:
 . CPU usage
 . RAM consumption
 . the size of your ~/.xsession-errors file

Do you notice any of them getting out of hand?

[Junjie Wu (wujj)]

Hi Christian,

Looks like maintaining an active ssh session remotely is the only way to troubleshoot this issue. My desktop just froze again, and firefox/plugin-container (flash) was consuming 100% CPU. Killing flash unfreezes the desktop. For the websites I visit, flash usually consumes 10%-20% CPU.

I didn't see your comment before last crash. I will report RAM and .xsession-errors next time I experience the issue. I also plan to Ctrl+Alt+F1 to check if I can open a new tty session.

[S. Christian Collins (s-chriscollins)]

You can also try disabling Flash hardware acceleration and see if that makes a difference. Follow the instructions here: http://superuser.com/questions/434762/disable-hardware-acceleration-for-flash-player-in-linux

[Junjie Wu (wujj)]

Ahh, that's embarrasing. My fault. I was compiling LLVM 3.1 on a 4G machine, while browsing with many many tabs. When the link stage starts, it consumes lots of RAM and forces the system to swap. I confirmed the RAM thrashing from a remote top. I didn't expect compiling LLVM to use that much RAM.

That's where my mouse movement becomes sluggish and finally freezes. Flash player either crashes or freezes and cosumes 100% CPU during swapping. Killing flash is really not the action which restores the system. Only after ld fails, my system becomes responsive again.

[Veronika Levkevich (veronika)]

I had that problem with Ubuntu 12.04 (Dell latitude e6330, amd64), and there were about 4 freezes per hour sometimes. For that reason I removed Ubuntu and installed Debian. There were no freezes with kernel 2.4, but I updated kernel to version 3.2.0-3-amd64 today and got complete freeze again.
So it seems to me it isn't ubuntu problem, but it's linux kernel problem.

[Martin Wildam (mwildam)]

I had similar issues - currently on kernel 3.4.0-030400-generic (got
at http://kernel.ubuntu.com/~kernel-ppa/mainline/) and no freeze since
then (a few days).

The only reason I did not use a higher kernel is because of the higher
kernel numbers do not work with the current vmware player which I need
for work.

[hawk (rudidu)]

I've updated my Ubuntu to kernel 3.4 and so far the lockups have stopped.
On Sep 18, 2012 10:05 PM, "Martin Wildam" <email address hidden> wrote:

> I had similar issues - currently on kernel 3.4.0-030400-generic (got
> at http://kernel.ubuntu.com/~kernel-ppa/mainline/) and no freeze since
> then (a few days).
>
> The only reason I did not use a higher kernel is because of the higher
> kernel numbers do not work with the current vmware player which I need
> for work.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/993187
>
> Title:
> ubuntu 12.04 completely freezes frequently.
>
> Status in “linux” package in Ubuntu:
> Won't Fix
> Status in “xserver-xorg-video-intel” package in Ubuntu:
> Won't Fix
> Status in “linux” source package in Precise:
> Won't Fix
> Status in “xserver-xorg-video-intel” source package in Precise:
> Won't Fix
>
> Bug description:
> Update: 6/12/2012
> This bug is about a complete system lock-up. No other TTYs can be
> started. Mouse doesn't move. Keyboard doesn't react. The only solution is
> hard reset.
>
> Seems to happen on a variety of configurations, including nVidia, ATI
> and Intel graphics.
>
> If you are still able to TTY or SSH into other sessions, move the
> mouse or use the keyboard, file another bug.
>
> Thx. Joris V. (brains).
>
> Update: 5/21/2012
> Updating the kernel to 3.3.6 as suggested by Michael in #91, the system
> seems stable, no freezes yet in 5-6 hrs of using and watching videos for
> couple of hrs.
>
> Original description:
> I recently installed newly released ubuntu 12.04 LTS 64 bit version on
> my desktop. And it is frequently freezing, for the first few hours it ran
> smoothly and when I started watching videos it started freezing randomly.
> I have to use hard restart every time.
> Initially it was only during videos but now even during normal browsing
> it is freezing.
>
> I am using on board graphics and do not have any graphics card
> installed.
>
> Can someone please help me here, I really love the new looks of 12.04
> and it bugs me not being able to use :(
>
> Below is my hardware configuration:
> Processor: Intel CORE i3 processor (2nd generation)
> Board: Intel® Desktop Board DH67BL
> Ram: 4GB
> Graphics: On board
> HDD: 500 GB
>
> Please let me know if you need more information, or any specific logs
> I can capture (and how).
>
> Thanks,
> Ketan Patil
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/993187/+subscriptions
>

[Sergio López del Pozo (selopo)]

Same here with nvidia 8600M GS

[Lars Erik Pedersen (pedersen-larserik)]

This bug affects me too.
ATi Mobility HD 4500, 3.2.0-31 kernel and 12.04 x64.

[Elias Jahn (eliasjahn)]

I was affected by this bug on Samsung E500 laptop, happened a lot, especially when on battery use, solved it after a long googling which returned me two possible solutions:
-ugrading kernel to 3.4
-adding this to kernel boot options: i915.i915_enable_rc6=0

The last solution was the fix, didn't have a single crash of those since then (more than 2 months ago).
As it happened mostly on battery usage, it really does make sense that it is related to the unstability of intel driver for sandy bridge which you can find easily googling for enable rc6 and sandy bridge.

The only thing is, that battery life gets a little less... :S but at least this makes your system plain usable again :)

[YAFU (yafu)]

This is disconcerting. In the bug report some people have nVidia cards - ATI and Intel, and all with the same problem. A lot of people affected and apparently Ubuntu responsible have no idea what could be the problem. I'm using Kubuntu 12.04 64bits and I have a nvidia card:
01:00.0 VGA compatible controller: nVidia Corporation GF108 [GeForce GT 430] (rev a1)

and I can not detect what is causing the freeze. The final lines of kern.log I get are related always with "dri" and "nouveau" after the freeze:

======
Sep 23 20:45:43 yafupc kernel: [ 5981.225699] [drm] nouveau 0000:01:00.0: PFIFO: unknown status 0x40000000
Sep 23 20:45:58 yafupc kernel: [ 5995.352503] [drm] nouveau 0000:01:00.0: PFIFO: unknown status 0x40000000
Sep 23 20:46:04 yafupc kernel: [ 6001.512805] [drm] nouveau 0000:01:00.0: PMFB0_SUBP0: 0x037f0040
Sep 23 20:46:04 yafupc kernel: [ 6001.512811] [drm] nouveau 0000:01:00.0: PMFB0_SUBP1: 0x037f0000
Sep 23 20:46:50 yafupc kernel: [ 6048.184954] [drm] nouveau 0000:01:00.0: PFIFO: unknown status 0x40000000
Sep 23 20:47:50 yafupc kernel: [ 6108.196017] [drm] nouveau 0000:01:00.0: PFIFO: unknown status 0x40000000
Sep 23 20:47:50 yafupc kernel: [ 6108.196017] [drm] nouveau 0000:01:00.0: PFIFO: unhandled status 0x00800000
======
Sep 24 17:41:06 yafupc kernel: [24326.885728] [drm] nouveau 0000:01:00.0: fail set_domain
Sep 24 17:41:06 yafupc kernel: [24326.885736] [drm] nouveau 0000:01:00.0: validate gart_list
Sep 24 17:41:06 yafupc kernel: [24326.885755] [drm] nouveau 0000:01:00.0: validate: -22
Sep 24 17:41:06 yafupc kernel: [24326.888564] [drm] nouveau 0000:01:00.0: PFIFO: read fault at 0x000d7e3000 [PAGE_NOT_PRESENT] from PGRAPH/GPC0/TEX on channel 0x0001799000
======
Sep 25 10:59:45 yafupc kernel: [ 7205.739725] [drm] nouveau 0000:01:00.0: fail set_domain
Sep 25 10:59:45 yafupc kernel: [ 7205.739736] [drm] nouveau 0000:01:00.0: validate gart_list
Sep 25 10:59:45 yafupc kernel: [ 7205.739762] [drm] nouveau 0000:01:00.0: validate: -22
Sep 25 10:59:45 yafupc kernel: [ 7205.856639] [drm] nouveau 0000:01:00.0: fail set_domain
Sep 25 10:59:45 yafupc kernel: [ 7205.856651] [drm] nouveau 0000:01:00.0: validate gart_list
Sep 25 10:59:45 yafupc kernel: [ 7205.856673] [drm] nouveau 0000:01:00.0: validate: -22
Sep 25 10:59:45 yafupc kernel: [ 7205.875555] [drm] nouveau 0000:01:00.0: fail set_domain
Sep 25 10:59:45 yafupc kernel: [ 7205.875567] [drm] nouveau 0000:01:00.0: validate gart_list
Sep 25 10:59:45 yafupc kernel: [ 7205.875590] [drm] nouveau 0000:01:00.0: validate: -22
Sep 25 10:59:45 yafupc kernel: [ 7205.885346] [drm] nouveau 0000:01:00.0: fail set_domain
Sep 25 10:59:45 yafupc kernel: [ 7205.885358] [drm] nouveau 0000:01:00.0: validate gart_list
Sep 25 10:59:45 yafupc kernel: [ 7205.885381] [drm] nouveau 0000:01:00.0: validate: -22
Sep 25 10:59:45 yafupc kernel: [ 7205.914156] [drm] nouveau 0000:01:00.0: fail set_domain
Sep 25 10:59:45 yafupc kernel: [ 7205.914168] [drm] nouveau 0000:01:00.0: validate gart_list
Sep 25 10:59:45 yafupc kernel: [ 7205.914190] [drm] nouveau 0000:01:00.0: validate: -22
Sep 25 10:59:45 yafupc kernel: [ 7205.935033] [drm] nouveau 0000:01:00.0: fail set_domain
Sep 25 10:59:45 yafupc kernel: [ 7205.935046] [dr...

[YAFU (yafu)]

Sorry, I meant before "drm" instead of "dri".

[Floopy Magee (hsmathman)]

Once more with feeling-
Ubuntu 12.04 running on a Dell e2540 laptop with i5 processor, using xfce, intel video card (i915), kernel 3.2.0-31, xorg version 1.11.3. Will happily submit any other info people want- here is what happens on my computer
Start up- log in, all looks good, usually I start Firefox and Thunderbird first- but not always
After some random amount of time, system freezes- no mouse, no keyboard, must hard restart
Log files seem to show nothing
This happens sometimes while I am working- but also it happens very often when I am away from the computer, Firefox and Tbird are open but beyond that nothing is happening- I come back to computer and it is frozen solid- sometimes with a blank screen (screensaver/power save?) and sometimes I can see the desktop.
My problem has nothing to do with videos as it has happened many times when I did not use Firefox at all, just opened it.
I have been getting a lot of "Report error messages" upon startup (not always but maybe every other time I start) and the error is invariably with the linux 3.2 headers. I sometimes report it- but usually I ignore this.

Is this being addressed?

I know there are a lot of different issues here but there are some pretty generic ones as well- just wanted to add a voice where videos are not the issue, and really the only non-linux software that could be at issue is Firefox and Tbird. I will try no longer using Firefox and see if that helps.

[Martin Wildam (mwildam)]

Hello Folks,

I can say that for about a week on kernel 3.4 and no more
lockup/freeze. Pretty sure that the problem lies in the kernel.

I did not try with 3.5 and 3.6 for a longer while because I have other
problems with those versions. :-(

[Alecz20 (alexguzu)]

I had the problem too:

Complete system hang, no response from mouse or keyboard, even when X was not running.
My system: Ubuntu 10.04 (2.6.32-43 Kernel, 64-bit).

In my case it had nothing t o with the graphics card but with the wireless network card (Atheros based D-link, ath5k driver)
My thanks go to Daniel Ferradal (dferradal) , who first pointed out the possibility of being the wireless card driver.

I unloaded the driver after boot and no more hang. for 3 days.

So for those that have the original bug symptoms (complete freeze, not just X), disable or remove the wireless card and see if it helps.

At least in my case the freeze happens only when the ath5k module is loaded.

[Moose (k-rottes)]

I installed a different version of Ubuntu (Voyager Live) and the problem seems to have disappeared. Maybe some errors with Gnome so. (Voyager Live run with XFCE).

[YAFU (yafu)]

I installed the nvidia proprietary drivers and after three days no freezing occurred in Kubuntu. I uninstalled the proprietary drivers and freezes are back. Clearly, my problem is related to the "nouveau" drivers.
In a few posts above I put what I get after freezing in kern.log file.

[yostral (yostral)]

I think I found what was wrong for me : it's the ethernet atl1c driver !

I had freezes on 12.04 and on 12.10. I unpluged my ethernet, that used atl1c driver, and only use wifi now, and no more random freezes.

As I could find on the net, atl1c is still marked as experimental ! They changed some things in one of the 3.2.x kernel (I can't say what, I don't understand every technical things..) and it seems worse for more people now.

See :
https://brainwreckedtech.wordpress.com/2012/05/31/linux-and-flaky-atl1c-support/
http://cateee.net/lkddb/web-lkddb/ATL1C.html

[mr.The (mr-the)]

I had the problem too.
My system:
Ubuntu 12.04.1 (3.2.0-31-generic)
My laptop:
Lenovo Z580
8GB ram
Intel(R) Core(TM) i5-3210M CPU @ 2.50GHz
nVidea G640M (2GB)
BCM4313 802.11b/g/n Wireless LAN Controller

As i can see, the problem appears when i use wifi. When i turn it off (just disconnect in network manager) and put the ethernet cable all seems ok.

[Floopy Magee (hsmathman)]

Update on my status-
Have not had a crash/complete freeze for 3 days, but screensaver is also not starting at random points in time, been using Firefox and Konquerer and no obvious difference. Have done whatever updates came through recently but not sure what if anything has happened

[mr.The (mr-the)]

So, update on my status too:
I trying to update kernel to 3.3.6(following this manual http://www.upubuntu.com/2012/05/how-to-install-linux-kernel-336-via-ppa.html). All going ok, but wifi turned off, and i can't install driver for my adapter for this kernel. So, i fallback to 3.2.0. If you can help me with this, you are welcome.

Also, i confirmed that problem in wifi:
>>When i turn it off (just disconnect in network manager) and put the ethernet cable all seems ok.

[sglafata (sglafata)]

I have two different makes and models of computers running Ubuntu Server 12.04.1 LTS and they are experiencing the same freezing that others are experiencing.

One is a Dell Dimension 4600 and the other is a HP Pavilion 8679F. I know these are old, but previously they both were running 10.04 flawlessly without the freezing.

I use the HP for DNS/DHCP in home and the Dell is my kids' Minecraft server. The HP has little load on it and the Dell is has load when my kids play Minecraft, otherwise it sits there throughout the day while the kids are in school.

I am finding that on average, the freezes/hang state occurs every 24-48 hours. All currents updates have been installed on both machines. I am running the '3.2.0-31-generic-pae' kernel on both machines. I do not run X on either machine, although I installed Xrender on the minecraft server because it complained that Java needed it.

After reading through this thread, I installed the 'linux-crashdump' package on both machines and will report what I get from it the next time this issue happens.

Also, per a previous entry in this thread, I added the kernel parameter 'drm_kms_helper.poll=0' to grub as well. I never had this entry before, so we will see if that has any affect.

In either case, I wanted to inform the relevant parties that this issue persists in the latest LTS release, and it does not matter what your hardware configuration is.

[Floopy Magee (hsmathman)]

Latest update- freezing has returned, complete freeze occurred while computer was idle, only program open was Thunderbird, no flash or videos were loaded or had been loaded at all, this time it occurred while the screensaver was active )blank screen- and keyboad/mouse completely dead, had to hard restart

Note- screensaver has still been having issues starting, when I try to load the settings/power manager, it fails- saying "Did not receive a reply"

I had hoped one of the recent updates to dbus or others might have had an effect but no luck- still broken

[Andy Brook (javahollic)]

This thread is so long. Solution is to not use 12.04, rollback to 11.10
and save yourself a bunch of time. I'll give 12.10 a spin, but will be
keeping 11.10 on hand if tat still as these problems.
On 9 Oct 2012 07:21, "Floopy Magee" <email address hidden> wrote:

> Latest update- freezing has returned, complete freeze occurred while
> computer was idle, only program open was Thunderbird, no flash or videos
> were loaded or had been loaded at all, this time it occurred while the
> screensaver was active )blank screen- and keyboad/mouse completely dead,
> had to hard restart
>
> Note- screensaver has still been having issues starting, when I try to
> load the settings/power manager, it fails- saying "Did not receive a
> reply"
>
> I had hoped one of the recent updates to dbus or others might have had
> an effect but no luck- still broken
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/993187
>
> Title:
> ubuntu 12.04 completely freezes frequently.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/993187/+subscriptions
>

[z (steveriley-deactivatedaccount-deactivatedaccount)]

12.10 has been trouble-free for me. I have attempted to duplicate the exact conditions that would reliably crash 12.04 on my T520, and so far, the system has resolutely failed to fail :)

[R4v3n (philippe-raven)]

I'm also affected by this bug. But it happens only when I'm using google-chrome. When I open a new tab and begin to write some url, it freezes completely, randomly. Nothing present in syslog, except, each time, this trace (about 1 hour before the freeze) :

"Oct 11 12:33:18 PSA-L kernel: [100880.088410] type=1701 audit(1349951598.499:69): auid=4294967295 uid=1000 gid=1000 ses=4294967295 pid=29471 comm="chrome" reason="seccomp" sig=0 syscall=39 compat=0 ip=0x7fc4f1818fd9 code=0x50001"

My laptop is a Clevo W150ER with an Intel Core i3-3210M and a Nvidia Geforce GT 650M.
Bumblebee installed but my chrome uses only the Intel chip.

[justin curtis mathews (jmate31)]

this is my system and i have had no lock-ups. even with 5 windows/programs open at a time i hope this information will help those who decide to go from what they are currently using to something like my pc. (it is just a suggestion)

[Martin Wildam (mwildam)]

On Thu, Oct 11, 2012 at 6:12 PM, justin curtis mathews
<email address hidden> wrote:
> this is my system and i have had no lock-ups. even with 5
> windows/programs open at a time i hope this information will help those
> who decide to go from what they are currently using to something like my
> pc. (it is just a suggestion)

In my case lockups gone with update of kernel 3.4, I have still issues
with 3.5.* and 3.6 hence I do not recommend those so far. Back to
nearly perfect desktop with 12.04.

--
Martin Wildam

http://martin.wildam.org/

[Curtis Cox (curtislcox)]

I'm having the same issue in 12.10. I just noticed it two days ago.
I did quite a bit of updating from software center
Updated some Tweaks stuff and other programs.
Even added Htop hoping to catch something but all I caught was more freezes.
Today ..it happened about 5 - 7 times. I've worked about 10 hours a day on this
machine the past couple days and it's very annoying.
Finally got this machine setup so I can work from home and now I'm considering
going back to my Window's machines if my backups don't work.
I run daily backups and I didn't notice this problem last week or even the past 3 or 4 days...
just the past couple days. There were a few updates from Synaptic that I took
on that were 70+ megs each. ...
gonna try and roll back a few days ago and see if that helps.

My issue always, always, always occur when I have multiple instances of the same program opened and try to transition between the windows . I am using unity.

Example
======

OPen Text editor > open a file > click on text editor on the launch pad again > right click
and select another instance of text editor. Sometimes I have 3 or 4 opened to review
various log files , screen shots, traces, etc. Eventually, when I select the launchpad to open another application or another instance of the text editor, firefox or file manager or Ubuntu Tweak, etc and when it transitions to multiple windows then it locks the screens. The screens seem to have a ghostly almost translucent image.The mouse is free to move all over the screen but the keyboard is locked out or at least nothing respond to it.... Only option is to turn the power off and reboot.
I do have Htop loaded and try to monitor memeory and stuff but nothing jumps out and when it locks of course I usually don't have Htop where i can see anything to point a finger at...

THIS IS A 2 GIG MEMORY GX260 Optiplex DELL ... NOTHING SPECIAL BUT ALWAYS A SOLID WORK HORSE IN WINDOWS.
JUST LOADED 12.10 ON IT THE PAST COUPLE MONTHS. DIDN'T HAVE THIS ISSUE ON MY 12.04 INSTALL ON THIS SAME MACHING. I UPGRADED TO 12.10 AND DIDN'T NOTICE THE ISSUE ON BETA 1 EITHER.

[pierre blarre (pierre-blarre)]

This happens to me on a Macbook 3.1 and a Thinkpad t430s.

I don't know if this can be useful, but I found out that it occurs more often if I use Netbeans, well, if Java is used, so it could be a Java related problem... ?

[Eran Duchan (pavius)]

On a Thinkpad W530, this behavior started to occur after about 2 weeks of what I would say normal use (w/ three monitors). Compiz would crash constantly before this lockup occured. When reverting to Ubuntu 2D, no such behavior is observed. If I log into an Ubuntu session, this will occur within minutes.

[dbindner (don-bindner)]

I don't know that I can add enough information to solve this for everyone, but I suspect that I can help for some people. I have two Dell laptops that have been plagued in 12.04, and I've observed enough to know that there are probably multiple bugs at work here, and that is why it is difficult to solve.

One bug is predominantly X related. It causes spurious logouts and freezes that only affect X (i.e. you can still SSH in). I've done so many things that I can't even count what might have fixed it, but this hardly ever happens to me now. I followed lots of advice, but I suspect one of 3 things was the final solution on my Dell XPS 14 (Intel video, Intel wireless, i5-3317U CPU): installing the X swat updates "deb http://ppa.launchpad.net/ubuntu-x-swat/x-updates/ubuntu precise main", upgrading to a new kernel (currently 3.5.5), or switching to the 2D interface.

My daughter has my old Dell Inspiron 15, and she is still experiencing lockups with her laptop. I am very confident that her lockups come from the built-in Intel wireless, particularly when the computer gets to the edge of a hot spot where the signal is spotty (dmesg shows problems briefly before the computer locks up and the weak wireless is almost a sure trigger). I think there has been a regression in the Intel wireless drivers because it was solid for years and then got crappy about a year ago. I decided to order a USB wireless ethernet adapter this week and just disable the internal wireless, and I expect that to solve her problems as well. I'm disappointed by this, because of course I specifically chose Intel wireless when I bought that machine years back for the reliable drivers.

So, perhaps nothing here will close the bug, but maybe it'll help someone else.

[dbindner (don-bindner)]

My wife's Dell laptop had freezes as well. I believe hers was solved by uninstalling or disabling gnome-screensaver. She finds that if she never closes the laptop lid, it rarely if ever locks up. I also uninstalled gnome-screensaver on my laptop, since my "forced logouts" almost always came when it was time to unlock after a long absence. So I offer that as another place to look for people having problems.

[S. Christian Collins (s-chriscollins)]

Don, is your wife's laptop based on AMD Trinity perchance? I have the same problem with the screen blanking, and I have avoided the lockups by disabling DPMS (on KDE).

[ddempsey3 (ddempsey3)]

My Ubuntu AMD64 machine was also seeing hard lockups, with 9800GT video card. Running Ubuntu 12.04 (3.2.0-31-generic). After trying to the latest Nvidia Driver (Driver Version: 304.51), without success I switched video cards (6600GT)

Now no lockups after 3 days but I am seeing the following "NEW" logs in the kern.log. Not sure if this is related but maybe the following logs in kern.log would cause my 9800GT to fall of the bus and cause a hard lock.
   http://www.cyberciti.biz/faq/debian-ubuntu-rhel-fedora-linux-nvidia-nvrm-gpu-fallen-off-bus/

kern.log
...
Oct 10 11:37:38 serverpc kernel: [93932.569132] NVRM: Xid (0000:05:00): 6, PE0000 06a0 00f2f1f0 0000f9ec 00f2f1f0 00f2f1f0
Oct 11 06:18:20 serverpc kernel: [161174.004254] NVRM: Xid (0000:05:00): 6, PE0000 0a40 fff2f1f0 0000fdf8 ffe8e8a8 ffe8e8a8

[dbindner (don-bindner)]

No, it was a Dell Inspiron 1545, Intel Core 2 Duo P8600, 2.4GHz, 1066Mhz.

Video is: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller

Wireless is: Intel Corporation WiFi Link 5100

[nellynut (nelly4nut)]

I can confirm complete freeze on 12.04
(no mouse, no keybord, no switch to tty possible)

It seems that the system freezes only when I run a virtualbox (with Windows 7, MS office application running) and additionally browse the web (firefox) outside the virtualbox. Although this might be coincidence or only one of possible triggers.

System:
Ubuntu Release 12.04 (precise) 64-bit
Kernel Linux 3.2.0-32-generic
GNOME 3.4.2
nvidia graphics driver version 295.40

Hardware:
Dell Latitude E6520
8 GB memory
Processor: Intel Core i7-2720QM CPU @ 2.20GHz × 8
graphics: NVIDIA NVS 4200M

I had a look into kern.log. Here are the last entries:
 [11344.255385] warning: `VirtualBox' uses 32-bit capabilities (legacy support in use)
 [11350.185989] EXT4-fs (sda2): Unaligned AIO/DIO on inode 7208975 by VirtualBox; performance will be poor.
 [11432.691593] show_signal_msg: 51 callbacks suppressed
 [11432.691597] VirtualBox[3630]: segfault at 7f9d61cf8cdc ip 00007f9dbb946149 sp 00007fff6eb539d8 error 4 in libc-2.15.so[7f9dbb7fe000+1b5000]

The problem is described here, too: https://www.virtualbox.org/ticket/10895 but there is no workaround.

[Tomas Kliegr (klieto)]

I have the same problem on Ubuntu 12.04, all updates installed.
(image on monitor freezed, no mouse movement, no keybord). In my observation all processes are freezed, not just the UI.

Hardware: Intel Core i5 3360M Ivy Bridge, RAM 8GB, Intel HD Graphics 4000, Intel SSD 520

The lock up appears now in average once in a day. I've experienced it immediately after login, when working with Kile, when using Firefox,...

No problems on Windows 7 in dual boot.

Switching to Unity 2D did not help.

[Christopher James Leaf (chrisj-leaf)]

I've tried several different versions of Ubuntu to see if any one of them is stable. I've tried 32 and 64 bit versions of 12.04 and 10.04 Ubuntu. All clean installs and have had a variety of results, it seemed like in most cases it would freeze more frequently the more updates I'd install. However, the clean install would also cause problems. I would actually get problems as early as logging in, as in it will freeze before my desktop even worked.

I have also had it freeze almost immediately on a VMWare Player running through windows 7. I had some rather sever glitches with playback of video games (Portal 1) on windows 7, especially when rapidly minimizing and maximizing the game and sometimes on regular play which would replicate this error in some since. The windows community believes it was due to over heating which is potentially true for windows, unlikely for this bug listing.

I am currently running Arch Linux without compiz and really haven't had any similar problems what so ever.

I've tried different versions of Gnome and several of the many fixes suggested here with no success.

I'm somewhat suspicious dual monitors at least enhances the frequency of crashing.

I really want my ubuntu back, why is this marked as no fix?

Hardware: I7-3930K + Intel DX79SI, 16GB Ram, Intel SSD 520, XFX Nvidia Geforce GT N640 (also happened with MSI Radeon HD 7770). Dual monitors.

[Martin Wildam (mwildam)]

Hi,

On Tue, Oct 23, 2012 at 7:32 AM, Christopher James Leaf
<email address hidden> wrote:
> I've tried several different versions of Ubuntu to see if any one of
> them is stable. I've tried 32 and 64 bit versions of 12.04 and 10.04
> Ubuntu. All clean installs and have had a variety of results, it seemed
> like in most cases it would freeze more frequently the more updates I'd
> install. However, the clean install would also cause problems.

I have a lot of installs and running virtualbox machines and vmware
images even in parallel.
I noticed that what causes the instabilities must be related to kernel
version used - and whatever variant of Ubuntu (Xubuntu, Kubuntu,
Lubuntu and even several other distributions based on Ubuntu) you are
somehow using the official kernels. The official kernel of Ubuntu
currently is 3.2.0.32 which I didn't test so far (my last tests with a
lot of freezes were on 3.2.0.28 if I remember right). Therefore I
began trying different kernels. With Kernel 3.4 for example I did not
have any freeze issue over weeks!

Would be interesting, which kernel you are currently using on Arch.

BTW: I have learned yesterday, that it is better to use the kernels from
http://archive.ubuntu.com/ubuntu/pool/main/l/linux/ which are the
Ubuntu adopted variants of the mainline kernels at
http://kernel.ubuntu.com/~kernel-ppa/mainline/ (the latter is the
transferred original kernel only).

I am currently on the Ubuntu adapted variant of kernel
3.5.0-18-generic - so far looks good but too early for a reliable
answer.

And the reason, why this is marked as Won't fix is because this bug
report already contains many similar effects but with very different
causes. This is why everybody should file a separate bug for the more
specific problem.

Best regards, Martin.

[dbindner (don-bindner)]

To follow up on my earlier comment. The Dell Inspiron 15 with the Intel wireless became stable when I disabled the internal wireless and added an AirLink101 AWLL6075 wireless USB adapter. I suspect a regression in the Intel wireless kernel module.

[Rabit rabit (o2918474)]

Same thing here too..

Core2Duo Desktop
Nvidia 6600GT
2GB
Ubuntu 12.04 32bit (always updated)

Random crashes almost everyday, often when watching some videos or youtube, but also crashes when I'm not doing any video at all. Yesterday it crashed when I was scrolling some web page on firefox. This morning when I was watching youtube. Seems like random actually. Someday I get by without any crash.

It's pathetic really, because I have been a strong supporter of ubuntu, and I've helped installing ubuntu on many friend's and family's computers.. I've always brag how solid and stable ubuntu is. Now I feel really bad for them.

Yesterday I decided to upgrade my kernel to 3.4. But no luck. Today it crashes again.

When it crashes, the keyboard lights blinking. No mouse or keyboard or ssh or telnet works. It will eventually restart itself after a half a minute or so.

[Rabit rabit (o2918474)]

Does everyone here uses or runs the system CPU and/or Network indicator?
Or can someone confirm that your system also crash without the indicator running?

I wonder if this is the culprit. See if it still happens when you don't have the indicator running.

[Andy Brook (javahollic)]

11.10 still going strong, not liking my odds for an upgrade...

On 1 November 2012 13:30, Rabit rabit <email address hidden> wrote:

> Same thing here too..
>
> Core2Duo Desktop
> Nvidia 6600GT
> 2GB
> Ubuntu 12.04 32bit (always updated)
>
> Random crashes almost everyday, often when watching some videos or
> youtube, but also crashes when I'm not doing any video at all. Yesterday
> it crashed when I was scrolling some web page on firefox. This morning
> when I was watching youtube. Seems like random actually. Someday I get
> by without any crash.
>
> It's pathetic really, because I have been a strong supporter of ubuntu,
> and I've helped installing ubuntu on many friend's and family's
> computers.. I've always brag how solid and stable ubuntu is. Now I feel
> really bad for them.
>
> Yesterday I decided to upgrade my kernel to 3.4. But no luck. Today it
> crashes again.
>
> When it crashes, the keyboard lights blinking. No mouse or keyboard or
> ssh or telnet works. It will eventually restart itself after a half a
> minute or so.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/993187
>
> Title:
> ubuntu 12.04 completely freezes frequently.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/993187/+subscriptions
>

--
Andy Brook
Facebook: http://www.facebook.com/andyjbrook (Biz)
http://www.facebook.com/javahollic (Personal)
Support: http://www.getsatisfaction.com/javahollic
Twitter: http://twitter.com/javahollic
Skype: javahollic

[Christopher James Leaf (chrisj-leaf)]

It seems that an upgrade to 12.10 worked for me, because it has the new kernel 3.5. I'm still testing it and found a few bugs (audio is buggy and skype crashes a lot) but I doubt they are related.

I also checked my Arch Linux kernel and it was also running 3.5 so perhaps the kernel can be in some way a fix?

[Gérald Gurtner (gerald-gurtner)]

Hi,

I have the same bug (complete freeze, no mouse & no keyboard
after a few seconds, no ssh, automatic reboot sometimes 2 or 3
minutes later) and here are some details which might help.
First my configuration (it's a desktop computer):

Processor: i3
Board: Asus P7P55D
Graphics: Nvidia GT940
Ram: 6GB
Sound: external card Audio Kontrol

There is a dual boot with windows on two different HD.

I tried to install one after another Linux Mint, Ubuntu 12.10
and Ubuntu Studio (for several different reasons), and here
are some remarks about all this:

- Things are much worse with Mint (because of cinnamon? Or
because of the version of the kernel? gnome-shell under Mint
was better at least). Even the live Usb froze several times.
- Things are worse with gnome shell than with xfce or gnome 2.
- I am now under Ubuntu 12.10 again, with Unity, and I
discovered that JACK was one of the major problem (I tried to
install Ardour & Co). Especially, during the installation of
Jack when the system asks if you want to "enable the real
time" (can't remember the exact message), choosing 'yes' is a
really a bad idea, it can make the system freeze instantly.
Now that I have said "no", things are much better overall.
- Problems are arising usually when something is involved with
the sound, with the graphics, or with the disks (partition of
the disk, importing a big folder in rhythmbox...)

Something seems wrong with drivers anyway... I'll try to use
the internal sound card instead, and perform other tests with
cinnamon and gnome-shell to see, but the major problem is that
there is not a standard procedure to make the system freeze,
as other people pointed out.

I hope it helped,

G

On Thu, 01 Nov 2012 01:16:49 -0000
  Christopher James Leaf <email address hidden> wrote:
> It seems that an upgrade to 12.10 worked for me, because it
>has the new
> kernel 3.5. I'm still testing it and found a few bugs
>(audio is buggy
> and skype crashes a lot) but I doubt they are related.
>
> I also checked my Arch Linux kernel and it was also running
>3.5 so
> perhaps the kernel can be in some way a fix?
>
> --
> You received this bug notification because you are
>subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/993187
>
> Title:
> ubuntu 12.04 completely freezes frequently.
>
> Status in “linux” package in Ubuntu:
> Won't Fix
> Status in “xserver-xorg-video-intel” package in Ubuntu:
> Won't Fix
> Status in “linux” source package in Precise:
> Won't Fix
> Status in “xserver-xorg-video-intel” source package in
>Precise:
> Won't Fix
>
> Bug description:
> Update: 6/12/2012
> This bug is about a complete system lock-up. No other TTYs
>can be started. Mouse doesn't move. Keyboard doesn't react.
>The only solution is hard reset.
>
> Seems to happen on a variety of configurations, including
>nVidia, ATI
> and Intel graphics.
>
> If you are still able to TTY or SSH into other sessions,
>move the
> mouse or use the keyboard, file another bug.
>
> Thx. Joris V. (brains).
>
> Update: 5/21/2012
> Updating the kernel to 3.3.6 as suggested by Michael in
>#91, the system seems stable, no freezes yet in 5-6 hrs of
>using an...

[StuartW (stuartwarren)]

I was having similar issues on Ubuntu 12.04.1 with my Dell Latitude E6530 (Intel graphics).
It would completely freeze at random points during the day, most likely when browsing the web using Chrome/Chromium.

It seems that after doing a apt-get dist-upgrade with ppa:ubuntu-x-swat/x-updates set up as a source, I have not seen the issue :o)
Currently running 3.2.0-33-generic

I guess this bug is a conglomeration of a number of issues with similar symptoms, but hopefully this helps someone.

[adam jvok (ajvok1)]

I have the same problem. 12.10, 64 bit.
Every day or 2 I get a complete freeze - no mouse/keyboard repsonse, screen does not change (clock does not advance), no ssh/ping reply. Nothing in logs.
I've been seeing this on several different PCs through few versions of Ubuntu (all 64 bit) for at least 18months.
Never see this on a machine running 32bit.

[Martin Wildam (mwildam)]

adam, what is the kernel that you use? Investigate it with: uname -r

Regards, Martin.

[Felix (apoapo)]

Hi Martin,

for me it is: 3.5.0-18-generic

Seeing this on 2 machines actually. DE doesn't matter. (Tested Unity and Gnome-Shell)

Both machines are 64 bit versions.

First: Nvidia 8600m using nvidia's driver
Second: Intel Sandy bridge (i3 with HD3000 gfx build-in)

For me it is not driver/DE related but Xserver itself. I am ready for running any test needed.

[Martin Wildam (mwildam)]

On Fri, Nov 9, 2012 at 9:03 AM, Felix <email address hidden> wrote:
> for me it is: 3.5.0-18-generic

Me too and no single lockup/freeze since running that (for weeks already).
Video: Intel i915

Regards, Martin.

[Tim (tbzep)]

3.2.0-32-generic 64 bit.
Fresh 12.04 install about 5 days ago due to11.04 support expiring. I started getting freezes yesterday in Gnome Classic with and without effects. Hard reboot has been the way to get out of it. This along with several other issues makes me regret the decision to "upgrade".

[backstreetrover (srijith-ju)]

I am also getting this bug and have observed it on 3 laptops.

My own laptop is a Lenovo z480 with 6gb ram and intel core i5 3210m , intel hd4000 graphics.

This one freezes ( complete freeze - no mouse , tty , anything ) once in a week

Another old lenovo has same issue. It also freezes a little more regularly.

I also observed this on a an old dell inspiron. On this particular system it freezes on live CD itself and you cannot proceed with installation. If wubi installation is done, then it freezes on booting ubuntu after installation.

I suspect that any hardware that this bug affects will show the freeze on live cd itself without needing to actually install ubuntu.

Why has this not been fixed by canonical yet !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[Martin Wildam (mwildam)]

Hi,

On Wed, Nov 14, 2012 at 8:56 AM, backstreetrover wrote:
> I suspect that any hardware that this bug affects will show the freeze
> on live cd itself without needing to actually install ubuntu.
>
> Why has this not been fixed by canonical yet
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

You can see it in the status of this bug: Because there seem to be
really different reasons for the freeze and hence different other bugs
and some might have been fixed already - as is mine - no more freezes
and reliability of my whole system increases again.

Regards, Martin.

[Gérald Gurtner (gerald-gurtner)]

Hi everybody,

Apparently the problem is solved for me. Installing the
proprietary driver for my nvidia card seems to be the key,
although, as I said before (#523), something is definitively
going on with the audio driver as well. I recall my config:

Processor: i3
Board: Asus P7P55D
Graphics: Nvidia GT940
Ram: 6GB
Sound: external card Audio Kontrol

I hope it helps someone.

-G

On Wed, 14 Nov 2012 09:53:02 -0000
  Martin Wildam <email address hidden> wrote:
> Hi,
>
> On Wed, Nov 14, 2012 at 8:56 AM, backstreetrover wrote:
>> I suspect that any hardware that this bug affects will show
>>the freeze
>> on live cd itself without needing to actually install
>>ubuntu.
>>
>> Why has this not been fixed by canonical yet
>> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
>
> You can see it in the status of this bug: Because there seem
>to be
> really different reasons for the freeze and hence different
>other bugs
> and some might have been fixed already - as is mine - no
>more freezes
> and reliability of my whole system increases again.
>
> Regards, Martin.
>
> --
> You received this bug notification because you are
>subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/993187
>
> Title:
> ubuntu 12.04 completely freezes frequently.
>
> Status in “linux” package in Ubuntu:
> Won't Fix
> Status in “xserver-xorg-video-intel” package in Ubuntu:
> Won't Fix
> Status in “linux” source package in Precise:
> Won't Fix
> Status in “xserver-xorg-video-intel” source package in
>Precise:
> Won't Fix
>
> Bug description:
> Update: 6/12/2012
> This bug is about a complete system lock-up. No other TTYs
>can be started. Mouse doesn't move. Keyboard doesn't react.
>The only solution is hard reset.
>
> Seems to happen on a variety of configurations, including
>nVidia, ATI
> and Intel graphics.
>
> If you are still able to TTY or SSH into other sessions,
>move the
> mouse or use the keyboard, file another bug.
>
> Thx. Joris V. (brains).
>
> Update: 5/21/2012
> Updating the kernel to 3.3.6 as suggested by Michael in
>#91, the system seems stable, no freezes yet in 5-6 hrs of
>using and watching videos for couple of hrs.
>
> Original description:
> I recently installed newly released ubuntu 12.04 LTS 64 bit
>version on my desktop. And it is frequently freezing, for the
>first few hours it ran smoothly and when I started watching
>videos it started freezing randomly.
> I have to use hard restart every time.
> Initially it was only during videos but now even during
>normal browsing it is freezing.
>
> I am using on board graphics and do not have any graphics
>card
> installed.
>
> Can someone please help me here, I really love the new
>looks of 12.04
> and it bugs me not being able to use :(
>
> Below is my hardware configuration:
> Processor: Intel CORE i3 processor (2nd generation)
> Board: Intel® Desktop Board DH67BL
> Ram: 4GB
> Graphics: On board
> HDD: 500 GB
>
> Please let me know if you need more information, or any
>specific logs
> I can capture (and how).
>
> Thanks,
> Ketan Patil
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux...

[Christoph (chrish2)]

Test the new Linux Mint(14), i think it works fine because of another kernel ;)

[Martin Wildam (mwildam)]

On Wed, Nov 14, 2012 at 11:55 PM, Christoph <email address hidden> wrote:
> Test the new Linux Mint(14), i think it works fine because of another
> kernel ;)

You can use a different kernel in Ubuntu also very easily - and don't
forget: Mint is based on Ubuntu. ;-)

http://archive.ubuntu.com/ubuntu/pool/main/l/linux/

[Rabit rabit (o2918474)]

*Update*

After about a week without crashes, I was beginning to think the bug was fixed.
But it happened again just a few minutes ago while I was playing a video from cnet.
Hard crash, auto reboot after a while.

I notice when the video is playing, the last sound/voice kept repeating when the system crash, like this guy on the video was saying the word "integral".. Then when my system crash the sound on my speaker is like "integral... integral...integral... integral...integral... integral...integral... integral..." kept on repeating until it reboots

3.4.0-030400-generic-pae

I'm losing faith on canonical... I was their biggest fan before.

[Christoph (chrish2)]

*** PROBLEM SOLVE ***
Linux Mint 14 works fine and has solved many bugs :)
All Bugs I had before are gone, at the time i had no critical point,
im very happy with mint 14.

So the problem with freezing should be solved with ubuntu 12.10 too because of another kernel
and mint 14 based on ubuntu 12.10 ;)

[Brendan Brigham (brigham)]

@ Christoph ... I thought others were having issues with Ubuntu 12.10 also ? I have since switched to Mint 13 Cinnamon 64bit and it has been absolutly flawless. I miss the Lens and certain aspects of Unity, but with stability like this who cares.

[milton hagler (miltonh26)]

Perhaps, someone can enlighten us about how Mint 14 is different from Ubuntu 12.10? What did they fix in Ubuntu 12.10 to
bring stability?

As for a Lens substitute try Synapse it is great and I must use it 100 times per day to launch applications and find
things.

On 21/11/12 06:41, Brendan Brigham wrote:
> @ Christoph ... I thought others were having issues with Ubuntu 12.10
> also ? I have since switched to Mint 13 Cinnamon 64bit and it has been
> absolutly flawless. I miss the Lens and certain aspects of Unity, but
> with stability like this who cares.
>

[Christoph (chrish2)]

I had the freezproblem on linux mint 13 with cinnamon 64bit.
Now I have linux mint 14 with cinnamon 64bit and no problems :)

[Hanine HAMZIOUI (hanynowsky)]

Hello,

Guys! MINT is based off Ubuntu.
Mint is nothing less than Ubuntu with another Desktop Environment
(CInnamon) and some tweaked options to make it look like Microsoft Windows.
Don't Fancy about it being more robust or life-savy!

For the freezing issue, I had it under 12.04 AMD64 (Complete freezing and
no TTY).
My problem was solved eventually by resetting Unity and Compiz:

$ unity --reset
$ unity --replace
$ compiz --replace

I am not yet sure it was the cure but my freeze disappeared right away.

I am running Both 12.04 and 12.10 on the same machine (AMD64) and they both
work just fine.

On Wed, Nov 21, 2012 at 8:23 PM, Christoph <email address hidden> wrote:

> I had the freezproblem on linux mint 13 with cinnamon 64bit.
> Now I have linux mint 14 with cinnamon 64bit and no problems :)
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/993187
>
> Title:
> ubuntu 12.04 completely freezes frequently.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/993187/+subscriptions
>

[Brendan Brigham (brigham)]

Well yeah, but Ubuntu without Unity and Compiz and it is stable. I had constant freezes with 12.04 64bit with Intel processor. Freezes persisted with every fix until I changed the kernal. Then with subsiquent updates from Ubuntu not matching the kernal I eventually had other little issues, nothing a big deal but didn't want to mess with it anymore seems it wasn't how it was supposed to be. Stability also increased with dumping neuvo(sp) drivers and Nvidia finally fixing theirs. I'm not bashing Ubuntu, but there is definitely a problem that shouldn't be there. I will stay with Mint until it's sorted out.

[Martin Wildam (mwildam)]

@Hanine:

How to do this:
> $ unity --reset
> $ unity --replace
> $ compiz --replace

while completely frozen? >8-|

[Hanine HAMZIOUI (hanynowsky)]

I did it when not frozen.

On Thu, Nov 22, 2012 at 1:25 PM, Martin Wildam <email address hidden>wrote:

> @Hanine:
>
> How to do this:
> > $ unity --reset
> > $ unity --replace
> > $ compiz --replace
>
> while completely frozen? >8-|
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/993187
>
> Title:
> ubuntu 12.04 completely freezes frequently.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/993187/+subscriptions
>

[Rabit rabit (o2918474)]

Today it happened again twice.

The first time today crashed while I was moving my mouse. Only firefox opened, but earlier before that I did play something on youtube about an hour before.

The second time happened just now, while I was playing a MP4 using VLC. Only played for like 2 seconds than crashed.

Ubuntu 12.04 (always updated) (32bit)
3.4.0-030400-generic-pae
Core2Duo with Geforce 7600
Nvidia driver 304.64

I suspect (guess) sound card driver. How do I check which sound chip I have and how to get an driver update if there's any?

[Koopee (koopee1234)]

Rabit: Currently running Linux 3.6.0-030600rc7-generic kernel. Has been working very good. No hangs for over a week.
I tried also the 3.4 kernel which did not work for me either.

[Rabit rabit (o2918474)]

Thanks Koopee,

As this crashing is still happening to me, actually it happened 5 minutes ago, and twice yesterday too,
so I'm going to try 3.6.0 kernel. See if it helps for me too..

Fingers crossed.

Thx

[Justin Fox (justinfx81)]

NVidia GEForce 610M and additional integrated Intel video card.

Intermittent hard freezes on Ubuntu and Mint - no traces as to why in any log file anywhere. Tried fresh install of 12.04 with different hard drive. Worked perfectly until I installed nvidia-stable drivers from Ubuntu repository - hard froze within minutes.

Installed "nouveau" drivers and removed all traces of nvidia drivers. NOTE: I had to remove the nvidia drivers in order to make my system stable. Other posts had said that was not necessary - for me it was.

One nouveau drivers were active. I issued the following:

~$ sudo apt-get --purge remove nvidia-common nvidia-current nvidia-settings
~$ sudo apt-get install ubuntu-desktop

ubuntu-desktop was a dependency of nvidia-common and therefore removed with the purge - that's why the install of ubuntu-desktop afterwards.

My system has been rock solid since.

[yannick L (yannick-lorenzat)]

try 3.6.3 kernel, no problem for 6 day. Seem to correct the problem for me

[mr.The (mr-the)]

@yannick-lorenzat, what ppa do you use for install 3.6.3 kernel? Will everything(like wifi and gpu) work okay at this kernel?

[Rabit rabit (o2918474)]

*Update*

So I make the jump and install kernel 3.6.3-030603-generic 5 days ago. ( I use the instruction from here http://www.upubuntu.com/search/label/System)

And also install a new Nvidia driver 3.04.64.

For about 5 days I didn't have any crash untill about 5 minutes ago. Bummer.

It crashed again. the same crash. Keyboard blinking. Then after a while finally reboots itself.

Wow. This is very frustrating. This time it crashed while I was moving my mouse.
I wasn't playing any movie or songs. Although I did play some streaming videos about an hour and again about 10 minutes before crashing. But nothing was playing when it crashed.

hhhhh ubuntu sucks... (that statement is surprising coming from me... )
still hoping tho...

[yannick L (yannick-lorenzat)]

I use this one http://kernel.ubuntu.com/~kernel-ppa/mainline/
This is my work machine, so I don't have wifi or specific gpu (integrated intel)

BUT, like rabit, 2 hour after my post, I have a freeze...

[Colin Constant (cconstant247)]

i tried installing kernel 3.6.3-030603-generic but it did not boot. i went back to original 3.2.0-33-generic and tweaked a few settings in CompizConfig Settings Manager, Unsettings and disabled all video drivers and so far no freezing since this morning. i will keep an eye on it for a week and report again on the progress :) . System monitor app in Ciaro -Dock shows 25-35% cpu usage and im typing this post(google chrome) and watching music videos in (Vlc).

  System Specs:

PC : HP Pavilian a1730n
release : Ubuntu 12.04 (precise) 32-bit
kernel : Linux 3.2.0-33-generic
memory : 2.5GB
processor : AMD Athlon(tm) 64 X2 Dual Core Processor 5000+ × 2
motherboard : A8M2N-LA (NodusM3)
graphics card : Nvidia Quadro FX 540
sound card : Creative Labs SB Live! 5.1
OS type : ubuntu 12.04.01 LTS 32-bt
hard disk : 1) 80GB runs Ubuntu 2) 360GB runs Windows 3)1TB for extra space

[Renaud Lavend'Homme (renaud-lavendhomme)]

hello ,

I'm also experiencing this bug since some months
I think that for my part it comes from compiz as explained in post#14

to solve the problem when i do have a general frezze, I do a :

1. CTRL+ALT+F1
2.Login as user.
3. sudo pkill compiz-decorator
4. pkill -9 compiz
5. CTRL+ALT+F7 to go back in X server

hope they will find a solition because it happens a lot on my professional computer

renaud

[mr.The (mr-the)]

Renaud, you have other bug. Becouse in this bug you can't do anything with your system, it's completely freeze.

Also, i have no freezes a few weeks.
Ubuntu 12.04 x64 with latest updates but with 3.2.0-31-generic kernel.

Actually I have no idea how can i get this.

[Renaud Lavend'Homme (renaud-lavendhomme)]

HI mr.The

ubuntu is totally frozen (mouse keyboard screen) I can only access the terminal by doing CTRL+ALT+F1

regards

[mr.The (mr-the)]

Renaud, god for you, becouse i and many other people can't do anything after freeze. ctrl+alt+f1 or something other hotkeys do not work. You can't connect to system via ssh(if you has installed ssh-server), you can't do anything.

In your case only window system has been freezed, so system can write something to log and you can read it. In my case - system can't do anything, and do not write any usefull logs.

[Renaud Lavend'Homme (renaud-lavendhomme)]

HI mr.The,

you are right...it seems that this bug could have different origines

can you tell me where to go to see the log of my crash.
I went in the /var/log directory but I don't know where to search

regards

renaud

[mr.The (mr-the)]

Hi , sure, look at /var/log/dmesg and /var/log/kern.log

And, read this: http://www.cyberciti.biz/faq/ubuntu-linux-gnome-system-log-viewer/ here is some useful info about logs in linux.

[Renaud Lavend'Homme (renaud-lavendhomme)]

hi

hmmm noting special in dmesg and kern log

the only think I founded is in the syslog.log I can see my pkill command :

Dec 5 14:21:52 renaud-laptop kernel: [25143.039105] Unknown OutputIN= OUT=ham0 SRC=25.75.55.23 DST=25.255.255.255 LEN=137 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=17500 DPT=17500 LEN=117
Dec 5 14:22:22 renaud-laptop kernel: [25173.072758] Unknown OutputIN= OUT=ham0 SRC=25.75.55.23 DST=25.255.255.255 LEN=137 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=17500 DPT=17500 LEN=117
Dec 5 14:22:23 renaud-laptop gnome-session[5761]: WARNING: Application 'compiz.desktop' killed by signal
Dec 5 14:22:23 renaud-laptop gnome-session[5761]: WARNING: App 'compiz.desktop' respawning too quickly
Dec 5 14:22:25 renaud-laptop acpid: client 5554[0:0] has disconnected
Dec 5 14:22:25 renaud-laptop acpid: client connected from 5554[0:0]
Dec 5 14:22:25 renaud-laptop acpid: 1 client rule loaded
Dec 5 14:22:52 renaud-laptop kernel: [25203.105090] Unknown OutputIN= OUT=ham0 SRC=25.75.55.2
3 DST=25.255.255.255 LEN=137 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=17500 DPT=17500 LEN=117

renaud

[Gianfranco Costamagna (costamagnagianfranco)]

If you need to look for a log I suggest to run ls with the "thor" powers.

ls -thor gives you the log ordered by date and time :)

[Jeremy LaCroix (j-jlacroix)]

I'm unsubscribing from this bug. This is ridiculous. This bug will NEVER be solved because everyone assumes that each type of crash is a different bug, refusing to believe the possibility that one single bug can affect different chipsets/hardware in different ways (completely freezing some, but not others). Until this bug gets high-level Canonical attention, the only hope anyone has is for an upstream fix to magically come down in the updates and solve it, assuming of course this isn't Ubuntu-specific. Good luck everyone.

[Brains (brains)]

Well, Jeremy. I do not blame you. There really is no interest from Canonical into fixing this bug. There is no guidance, no follow-up, no reaction.

Yes, truth is that all different comments filed here seem to appear related, but are not necessarily so, making pinpointing the source of this bug difficult, maybe even nigh impossible. But, please canonical, do react then, have this followed up and try to use the snippets of information being posted here, posted on a daily basis! This bug is _highest_ on the heat chart! That should give it some more priority, even if comments appear to be unrelated? If these are duplicated, at least file a list of other bugs and dissallow comments on this one?

I still have this bug, I hoped it would have been a temporary 12.04 issue. 12.10 has the exact same problem though.

I'm on an MSI EX600 laptop with Core2Duo processor and nVidia 8400G card.

As far as I can judge, this is a kernel thing messing up with GPU. Something crept into the later kernels, i.e. above 3.0, shipped with Oneiric 11.10. Oneiric is rock-solid, even with propriety nVidia driver. Every distro I tried with a higher kernel gave problems (but Ubuntu is the harshest - crashing where only a hard reset works). Every distro with a kernel higher than 3.0 makes nVidia's driver unuseable on my system.

About to sign out of this bug as well - but I'll see for a few more weeks.

[Martin Wildam (mwildam)]

On Wed, Dec 5, 2012 at 4:57 PM, Joris V. <email address hidden> wrote:
> As far as I can judge, this is a kernel thing messing up with GPU.
> Something crept into the later kernels, i.e. above 3.0, shipped with
> Oneiric 11.10. Oneiric is rock-solid, even with propriety nVidia driver.
> Every distro I tried with a higher kernel gave problems (but Ubuntu is
> the harshest - crashing where only a hard reset works). Every distro
> with a kernel higher than 3.0 makes nVidia's driver unuseable on my
> system.

As I mentioned several times: kernel 3.5.0-18 for me does extremely
well. Did you try that, Joris?

I had a few other kernel issues also but filed them to kernel.org
where I got response pretty fast. Maybe Canonical is not so much
involved into the kernel development (any more) and just take what is
coming from the kernel folks.

[offtopic=on]
That said, I have still the impression that Ubuntu is the distro that
has least problems with devices (my last try of Fedora had still
issues with my wireless and mobile internet sticks).
[offtopic=off]

Regards, Martin.

[Rand Kmiec (rkdart)]

Hi All,
  Just for another data point, I've had this bug occur several times (at least I believe it's the same issue; in most cases the PC goes from running to just a black screen, and restarts itself) on Ubuntu 12.10, most recently with 3.5.0-18 and the 310.19proprietary NVidia drivers and KDE 4.9 (64-bit versions), though I've been running several days with 3.6.0-030600 without a problem and am about to upgrade to 3.6.9-030609 to give that a try.

  When it happens, it seems to be pretty random. Very frustrating bug, although at least there do seem to be some kernels where it does not occur, or occurs very rarely. Next time it occurs, if it does, I'll take a closer look at the logs, though I hadn't noticed anything obvious on the previous occurrences.

Regards,

Rand

[Renaud Lavend'Homme (renaud-lavendhomme)]

Hi martin

I totally agree with you that it could be a kernel issue that canonical can not solve.

I've just updated my kernel to 3.6.9 and I will keep you informed

renaud

[Martin Wildam (mwildam)]

@Rand: I had this with virtualbox or vmwareplayer running (do not remember
which because I use both) and a vm was booting. Disabling some kernel flag
related to watchdog helped and later using updated versions of virtualbox
and vmware solved. The issue anyway.

There is a feature in the kernel (I think it is called watchdog or so) that
tries to identify hangups and then triggers a reboot which is a good
behavior for servers at least. However in my case it was a "false positive"
because disabling the feature in grub did not bring any lockup but no more
auto-reboots.

HTH.

--
Martin Wildam

[Rabit rabit (o2918474)]

FYI, this bug is for hard system Crash only!.

You can't do anything with the system other than reboots (actually in my case, it will reboot itself in about 20 seconds). No Ctrl-Alt-F1, no SSH, nothing)

And Yes... still happening.. Just crashed again.. Seems pretty random. Can't see usefull logs either.

So is this ubuntu thing or kernel thing? I can't believe we still can't figure that out even after 568 comments here.

[Martin Wildam (mwildam)]

On Sat, Dec 8, 2012 at 1:21 AM, Rabit rabit <email address hidden> wrote:
> You can't do anything with the system other than reboots (actually in my
> case, it will reboot itself in about 20 seconds). No Ctrl-Alt-F1, no
> SSH, nothing)

My freezes where all of this type.

> And Yes... still happening.. Just crashed again.. Seems pretty random.
> Can't see usefull logs either.

Which kernel are you currently using?

> So is this ubuntu thing or kernel thing? I can't believe we still
> can't figure that out even after 568 comments here.

Oh, I thought we are sure. At least I am - as changing the kernel
(first to 3.4. something and later to 3.5.0-18) solved the problem for
me.

Best regards, Martin.

[Rabit rabit (o2918474)]

@Martin,

I'm using 3.6.3-030603-generic. I just recently upgraded.
I also update nvidia driver to ver 3.04.64

My system dual boots with Win7 which works just fine in Win7..

Martin, I notice you're using kernel 3.5.0-18-generic.
Since I'm using kernel version higher than yours,
would you suggest I downgrade to that version? Kinda skeptical though.

I've tried 3.3.6, also 3.4.x which didn't help either. But i've never tried 3.5.x

Can anybody else confirm that kernel 3.5.0-18 solves the problem?
Or doesn't solve it. Please do report.

Regards,

[milton hagler (miltonh26)]

Still crashing for me occasionally with 3.5.0.19-generic, if I recall correctly I was using 18 before and it also crashed.

On 10/12/12 20:38, Rabit rabit wrote:
> @Martin,
>
> I'm using 3.6.3-030603-generic. I just recently upgraded.
> I also update nvidia driver to ver 3.04.64
>
> My system dual boots with Win7 which works just fine in Win7..
>
> Martin, I notice you're using kernel 3.5.0-18-generic.
> Since I'm using kernel version higher than yours,
> would you suggest I downgrade to that version? Kinda skeptical though.
>
> I've tried 3.3.6, also 3.4.x which didn't help either. But i've never
> tried 3.5.x
>
> Can anybody else confirm that kernel 3.5.0-18 solves the problem?
> Or doesn't solve it. Please do report.
>
> Regards,
>

[s.crema (s-crema)]

After an installation on an Acer One 522 , with AMD C50, went apparently well , I tried to reinstall a newer version beacuse of the huge amount of upgrades (810 Mb) and from this point I always get the PC freezing after the splash boot, and to see a live cd working I had to go back to Ubuntu 10.10 or Mint 10, this evening I will try with Mint 14 to see if anything change.

stefano

[Raider (4spammers)]

I have the same problem on 12.04 x86_64, kernel 3.2.0-34-generic #53-Ubuntu SMP on HP ProBook 6560b. System freezes completly

But:
1. Some time ago I was lucky enough to connect via SSH and run top (I think that PC was'nt freezed completely). I saw X process with 100% CPU. After few minutes box hanged (no ping etc.).
2. I have 3 installations of Ubuntu 12.04 x86_64, but I have problem on HP ProBook 6560b only.
3. First time I've faced this problem after Aug., 15 or so.
4. System hangs on screensaver, even when I'm using blank screen instead of OpenGL screensaver

It seems that this is hardware-dependent problem. My hardware is
-----------------------------------------------------------------------------
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation 82579V Gigabit Network Connection (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b4)
00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b4)
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b4)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04)
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Seymour [Radeon HD 6400M Series]
01:00.1 Audio device: Advanced Micro Devices [AMD] nee ATI Caicos HDMI Audio [Radeon HD 6400 Series]
24:00.0 FireWire (IEEE 1394): JMicron Technology Corp. IEEE 1394 Host Controller (rev 30)
24:00.1 System peripheral: JMicron Technology Corp. SD/MMC Host Controller (rev 30)
24:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller (rev 30)
25:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller (rev 01)
-----------------------------------------------------------------------------

[Øyvind Stegard (oyvindstegard)]

Experienced complete freeze on Dell E6510 laptop a few times now, Ubuntu 12.10 x86-64, Nvidia 310.19 on NVS 3100M GPU. The machine drops dead, no networking, no VC, no sysrq, fan starts, screen goes black, but backlight is still on. Only possible fix is holding down the power button a few seconds while cursing. Been using this laptop with Ubuntu since 10.04, and never had this problem before.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Sergey Wolf (sergey-wolf)]

I think I found "fix" for my case. Ubuntu x64 freezes completely, intel i5.
I've noticed that when system freezes, chrome is always on.
So I've switched to firefox, and guess what, no more freezes!

[Martin Wildam (mwildam)]

Hi,
as kernel 3.5.0.18 solves my freeze problems, someone asked me to try with
a newer kernel. Yesterday I tried the newest - 3.7.0.6 or so -
unfortunately I cannot go to long-run tests because it seems, my virtualbox
can't cope with it. Probably I need to upgrade that as well.

As it seems, there are 4 groups of people posting here:
1. Problem with the kernel and solved by upgrading it.
2. Problem with NVidia-Driver solved by using the alternative (the one that
is shipped with Ubuntu - if I remember right).
3. Problem with Chrome browser solved by switching to Firefox.
4. Not yet nailed down to reason.

I think at least for the cases 1-3 there should be separate bug reports
(not yet checked if there are already).

Regards, Martin.

[Thai Ly Cuong (thailycuong1202)]

I also have freeze problem on my laptop. When it freezes, I see Chrome is the last application I interact with.

My detail system:

- Dell XPS 14 Ultrabook 1.7Ghz Core i5
- HDD 500GB, SSD 32GB store ubuntu
- Graphic card 1GB Nvidia 630M

[Tim Kowalsky (akropolis)]

"Critical" importance, and two or three new users report this issue every day or two, since May. And somehow this is marked as "Won't Fix"?
How asinine is that?

It isn't as if there's a workaround for this issue. It isn't as if the issue can be ignored, by affected users.

[Neil (kingfisher)]

Yeah, for me its compiz that freezes, and I can control alt F1 then pkill -9 compiz that usually works and compiz restarts ok, occasionally it wont and I sudo reboot.

[Rabit rabit (o2918474)]

For me, lots of time it freezes totally (keyboard lights blink, no mouse, no keyboard, no ssh)
while working with just firefox,
I don't use chrome, no compiz, and no unity.
I log in using Gnome Classic (no effect)
Many times although not all the time, I previously play some video, either MP4 from my harddrive or streaming from internet such as youtube.
Lots of times it also happens while soundcard is playing something. And hard crash happens with the sound keep repeating until it reboots.

Asus Mainboard, Core2Duo, Geforce 7600, 2GB ram.
Nvidia 3.04.64 and kernel 3.6.3-030603-generic

I still don't know whether this is a kernel or ubuntu problem only.
I kind of suspect the problem has to do with driver (network or sound or nvidia).
But mostly I'm in the dark

[Rabit rabit (o2918474)]

Ok, For those of you new here:

This bug is about a complete system lock-up. No other TTYs can be started. Mouse doesn't move. Keyboard doesn't react. The only solution is hard reset.

Seems to happen on a variety of configurations, including nVidia, ATI and Intel graphics.

If you are still able to TTY or SSH into other sessions, move the mouse or use the keyboard, file another bug.

This is no compiz or X problem where you can still access your system. This bug is about TOTAL freeze and there's nothing you can do other than reboot.

[Christoph (chrish2)]

Thai Ly Cuong (thailycuong1202) wrote on 2012-12-12:
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
I also have freeze problem on my laptop. When it freezes, I see Chrome is the last application I interact with.

My detail system:

- Dell XPS 14 Ultrabook 1.7Ghz Core i5
- HDD 500GB, SSD 32GB store ubuntu
- Graphic card 1GB Nvidia 630M
-----------------------------------------------------------------------------------------------------------------------------------------------------------------

I have the Dell XPS 14 with same configuration but i have the core i7.
Try Linux Mint 14.1 64bit cinnamon it works fine on my system.
The graficcard you can use with bumblebee ;)

I think the freezebug is a kernelproblem with the new generation of intel cpus.

[mifi (fierst42)]

A week ago I installed 12.04LTS 64b on an old desktop with a Pentium D and 2GB memory than ran 10.04 LTS before.

Since then I have seen a couple of random freezes. No mouse, no keyboard, no ssh nothing except a total reset.

I have 12.04 running on all sorts of dekstops and notebooks and even a Zotac AD04. They are all running fine. Except this Dell Dimension 5150.
I had a hard time believing it, since 12.04 was running nicely everywhere else, so I ran memory check, file system check, but all was fine.

Is there any info I can provide to help analysing this problem?

m

[Martin Wildam (mwildam)]

On Thu, Dec 13, 2012 at 3:44 PM, Kayvan Javid <email address hidden> wrote:
> ** Changed in: plymouth-theme-int2mil-ubuntu-11.04 (Ubuntu Precise)
> Status: Confirmed => Fix Released

Was this an accidental mistake? Or how is it suddenly clear even what
the real cause reason behind all those freezes is?
Can you provide another reference bug number? I would be interested. Thanks.

Best regards, Martin.

[s.crema (s-crema)]

I solved the problem installing Mint 14 Cinnamon instead of Ubuntu, didn't want to break the hard disk due to the continuos powering off of the frozen PC. With Mint14 works fine.
Unfortunately when you install Ubuntu you could not choose what to install from the beginning
if you want Unity or not, and the system freeze also with a live CD of Ubuntu from 11.04 , 11.10 and 12.04 soon after the splash boot not leaving any possibility to make a recover action.

stefano

[Covi (j.a.cobo)]

It´s a shame, but, as a @s.crema, I too am going to switch to Mint.
What it can´t be is the fact that we have problems in each update with nVidia, Unity and Compiz; ...and I guess the problem is not Ubuntu but nVidia and his drivers :'(

[Kayvan Javid (k-javid)]

@Martin: Apologies, I fat fingered it, and found no way to correct my mistake, great first contribution to Ubuntu eh?

@Covi: More people with this provlem are running Intel CPU with on-board GPU and have the same issue, nvidia should be let off the hook in this instance.

@all: Commenting on this bug for a machine which is still in someway responsive, is just filling it with unrelated information. This is a HARD LOCK problem, resulting in a machine which is dead in the water, the lights are on, but nobody is home.

In order to provide some constructive input:
I have been experiencing this exact bug (HARD LOCK, loss of networking, absolutely no input, etc... ) after reinstalling afresh from a stable 11.10 Oneiric on 2.6 kernel, to 12.04 Precise with a 3.2 kernel.

In an attempt to remedy the problem, I have tried installing the linux-image-generic-lts-quantal package to pull in a 3.5 kernel, NO FIX (possibly even more frequent).

Having read many many reports and forum posts through several different distributions on various different hardware platforms, it seems it is not entirely limited to those which are Ubuntu derived. There seems to be a relatively common theme of Intel CPU's with onboard GPU, specificially the i3 and i5 processors which make use of the i915 driver. Which I happen to have Oops logs in syslog for once in a while (most likely another relatively unrelated bug in the i915 driver). So again in a vain attempt to resolve the issue, I made use of XORG-EDGERS PPA to obtain the latest daily builds of this driver and other xorg components, NO FIX.

Another common theme among these reports, seems to be intensive GPU use for video playback, more often than not via XBMC. This is the primary use of MY box, and while not making use of XBMC on the machine, it has resulted in a stable up time of 3+ days.

I am convinced this is kernel / driver module related specifically since 2.6 > 3.2, so those running Mint who think its resolved confuse me.

[Raider (4spammers)]

I'm using AMD with proprietary driver. PC hangs when idle for some time with no logs. Screensaver - blank screen. Quick solution for me - disable screen saver completely.

[Kayvan Javid (k-javid)]

@Raider: Sorry to say your issue seems to be an interaction between your hardware and your screensaver / power settings, as your previous comments mention ability to ssh in to your machine and check process etc. Your problem is not associated with this bug report, as you have not had a hard lock. You will need to look for other reports specific to your problem.

[S. Christian Collins (s-chriscollins)]

@Raider: You appear to be experiencing Bug #969860. Go look there for information and a fix.

[Raider (4spammers)]

@Kayvan Javid
@S. Christian Collins (s-chriscollins)

Guys, thank you very much! I'll try solution from #969860 soon, but almost sure that this will help.

[Richter Belmont (jingurlukovich)]

I have been experimenting the same problem, complete system lock up, for the last week (it happens randomly, about 10 minutes or so after log in). It was very stable up until last week, never had any problems with Ubuntu.

I updated the BIOS but it did nothing.
However if you boot the kernel with the option acpi=off, the lock ups appear to stop (but the display resolution messes up) and this really is no solution.

Setup:

Intel Pentium 4 3.2Ghz
Intel 945GTP Mother Board
Ubuntu 12.04 LTS
Kernel 3.2.0-34-generic

[Brains (brains)]

@Kayvan: great write-up. Thanks.

But the problem is broader than intel with on-board CPU. It happens on Intel-nVidia CPU as well, which is my set-up: a Core2Duo with an nVidia 8400M. I does not at all happen on Oneiric 11.10, which I went back to. It starts from 12.04 and continues into 12.10.

It does not necessarily happen with "intensive" use. I had it while just browsing the web - although the web can be "intensive" use as well on some sites, which load up lots of flash ads and things. Both on Firefox and on Chrome / Chromium.

I did notice that when scrolling up and down a page, the screens blinks (i.e. goes to black and back up) for some milliseconds. Sometimes the PC passes / recovers from such a blink, sometimes it results in this lock-up.

To make sure: it _is_ a complete system lock-up I have: no mouse, no keyboard, no TTY, no log-entries. Hard-reset is the only option.

[Renaud Lavend'Homme (renaud-lavendhomme)]

hi,

I belong to group of people that can solve the problem by doing "sudo pkill compiz-decorator" and "pkill -9 compiz".

I first upgraded to Linux Kernel 3.6.10 without any change (2-3 crash everyday)
Than I upgraded again to linux Kernel 3.7.0-030700-generic...and I'm running it since 48 hours without any crash.

the changelog of this kernel claim a " Better support for Radeon & Intel graphics cards"...may be this is the reason why it works since I have an intel graphic card.

let's hope...$$renaud

[Kayvan Javid (k-javid)]

@Renaud: If you have a system responsive enough to interact with to kill processes, this bug is not the right place to comment. Compiz problems causing your user interface to lockup are relatively common place and NOT the same problem causing a COMPLETE HARD LOCK, which result in a completely unresponsive computer which is what this bug is about.

As a follow up to my experimenting, I can reliably reproduce this bug within a timeframe of about 24hours. I left my system without XBMC running, had an uptime of 5+ days. The same night I used (and left running) XBMC, hard lock.

This is the vanilla XBMC package from the Precise repo, installed via the software center.

Again, just to reitterate to other commentators, this bug is for those experiencing a COMPLETE HARD LOCK, resulting in a system which is not responsive to ANY input, loses network connectivity, frozen video output, and often the audio which is output at the time of lock is looping.

So those who are able to interact with their system, to switch terminals, kill processes, ssh in remotely, should look at other bugs.

[Brains (brains)]

@renaud: with all due respect, but you belong to the group of people who should not be posting in this thread. If you can still "sudo pkill", then your system still is responsive. This thread is about COMPLETE lockups: no mouse, no kb, no tty, no SSH possible. Holding the power button and rebooting is the only means of recovery!

@admins / canonical: I would be willing to clean up the 500+ posts in this thread to sift out false reports like the above and only keep the relevant ones. How can I do this?

[Renaud Lavend'Homme (renaud-lavendhomme)]

hi Kevan and joris

this was already suggested by martin (post 579) who suggested the existence of 4 different bugs.

OK, but where to go in the lauchpad??(bug#XXXXXX)

regards
renaud

[John Cottier (j-cottier)]

I am running 12.04 kernel 3.2.0-35-generic-pae (32 bit) on a Dell E521 AMD dual core machine. I have experienced hard locks (IE a power off job) and partial locks (still responds to raw keyboard mode commands Ctrl+Alt+Sys Req+r etc). The last hard lock was a few days ago. But this is always triggered by compiz. Often compiz will crash and offer to send a report and restart, but the locks are always triggered by this action:- Click on Dash button, type in search characters, and then: *click on a result*. Its always that final click (to start or spawn somthing) that causes the lock in my case. This is an upgrade from 10.04 and I have an nvidia Geforce 210 card with the "version-current updates" driver. This is my work PC, and its sad to say I have never had such an unstable box.

[abrianb (abrianb2003)]

My system freezes completely, Ubuntu 12.10, Thinkpad t-60/Intel core 2 cpu t7200/gallium 0.4 on ATI rv515/ 32 bit/kernel 3.5.0.21.27 ... It takes a hard reset to get it back. Sometimes I have to disconnect power to reset as holding down the power key will not work.

[Kayvan Javid (k-javid)]

@adrianb: Weird, its not even a recent CPU, would have expected your hardware to be rock solid.

Going to try a daily build of mainline 3.7 kernel over the next few days, will post up results.

[Charles Hill (chill)]

I too have experienced this hard freeze, which requires me to power off the machine. It happens maybe once a day, if that. It usually happens after I've been doing a variety of different things for a few hours. From what I can remember, it happens while the following programs are open:
Chrome (a few tabs open; has NOT happened during video playback)
Empathy (a couple chat boxes open; logged into gTalk)
Rhythmbox (playing music)

I am unsure what specific action causes the hard freezes; it could be a variety of things as far as I can tell.

Here are my system specs:
Ubuntu 12.04 (precise) 64-bit
Kernel Linux 3.2.0-35-generic
GNOME 3.4.2
Intel® Core™ i7-3740QM CPU @ 2.70GHz × 8
Ivy Bridge
16GB RAM
Intel SSD

[jds (jay-schieber)]

I have no more details to add to this discussion, but do have the same problems already mentioned: a hard freeze of my desktop after updating from 10.04 to 12.04. I have also tried different kernels, checking discs, and memory. I do not have the same problem on two other boxes with the same upgrade but different hardware. I am just posting to show that the number of people having this problem is not small.

[Brains (brains)]

@renaud: your comment being out of place was already suggested in the first six lines of this bug report, not only on comment #579.

The comments which should be posted in this thread are all about option 4.

YES, we DO experience LOTS of system lock-ups.
NO, whatever we do, i.e. change browser, change driver, change display effects, heck, even change kernel, we STILL experience lock-ups.

like said: if you can still move the mouse, use the keyboard, TTY , SSH or find any other means of a workaround, this thread is NOT the thread to post in.

@canonical: how can I clean this up?

[AG Restringere (ag-restringere-deactivatedaccount)]

By any chance do some of you use Chromium 20/22? I recall that there was an issue where Chromium would free due to an ongoing problem with X11, Nvidia Drivers and Chrome's ability to use hardware acceleration.

http://code.google.com/p/chromium/issues/detail?id=145600

I experienced the same issue which is a total X11 lockup and a need to hard reset and it was entirely due to two things:

a) Did not use latest Nvidia drivers from the X-SWAT PPA.

b) Used Chromium and DID NOT download Chrome Official directly from Google which is maintained better,
https://www.google.com/intl/en/chrome/browser/?&brand=CHMB&utm_campaign=en&utm_source=en-ha-na-us-sk&utm_medium=ha

c) Used Chrome without putting the Command-line flag --disable-accelerated-compositing

Please try the above steps and if the problem does not happen then it is Chromium bug #145600..

[AG Restringere (ag-restringere-deactivatedaccount)]

Just to add "due to two things" should be "due to three things"...

[T.R. (tapio-ryhanen)]

Hi! I'm also facing this issue with a couple of computers. Please, see the attached file for details.

[AG Restringere (ag-restringere-deactivatedaccount)]

For all those still facing the issue please open Chromium and copy the information in 'about:version' and 'about:gpu' and just paste it to http://paste.ubuntu.com/ and include the link in your response...

[Brains (brains)]

@AG: it is not only about Chromium / Chrome. Changing to Firefox does not solve the problem here, as stated in #606.

The Chromium bug 145600 you link to tells the current window is unresponsive, but that you can still minimize / restore.

This bug is about COMPLETE system lock-ups: no keyboard, no mouse, no tty, no ssh. Only means of recovery is holding the power button and restart the computer from BIOS POST onwards.

[Brian Spisak (bspisak)]

I have seen this happen 3 times in the last 2 days since I installed 12.04.1-desktop-amd64 on my core i5 p8z77-v pro. Kernel is 3.2.0-35-generic and everything was brought up to date via update manager.

The system is totally frozen: I can't even ping it from my laptop and I've verified the correct IP from the my router and the mac address of the frozen system. I was able to ping it before. Perhaps even more interesting, when I hit the hard reset button, nothing immediately happens! I don't know how this is implemented, but in the past I've always got an immediate reset. I hit it 2 or 3 times, and it was perhaps 10 seconds later I got a reset. The last time it froze, I saw the same thing, but I didn't as long prior to trying the power button. A single press of the power button did nothing, and I had to hold it down to get the system to reset (as expected.)

I was previously running 12.04.1-desktop-i386 on the same machine with identical setup and did NOT see any problems in the same amount of time. Not a definitive finding, I know, as the time frame is quite short, but I perhaps spent more time on the 32-bit version than I have so far on the 64-bit.

The syslog doesn't show anything prior to the reboot, although it looked like cron would have just been running: the previous log was at 19:17:01 so the next hourly would have been 20:17:01 and and my reboot was started at 20:19:18. I was browsing the web with firefox 17.0.1 when it froze up. Nothing else going on that I can recall. The previous freeze, I can' t recall if I was browsing, but I was running filezilla to transfer a large directory from a local computer allowing 10 open sftp connetions. After rebooting, I did the same operation 3 or 4 times again without a problem. That was approximately 24 hours ago.

Not sure what else to look for. I don't really know my way around linux that well, so if someone wants me to look at something the next time this hangs (and I'm sure it will within another 24 hours or so) just let me know.

Otherwise, at some point, I'll may try to upgrade the kernel. I've never done so and don't know what the current state of affairs is, so I guess I'll have to do some research first.

Brian

Oh, I'll also run a memory test overnight. I've got 16g running at 1600 using an XMP profile, but otherwise, I'm not overclocked. Also, not using swap. I do have an SSD as my main system disk and have mounted /var and /home from an internal RAID5 array with /tmp, /var/tmp and /var/spool using tmpfs. Also, using deadline on the SSD (via rc.local) and leaving all other devices NCQ. The only other thing I've changed from stock is I've mounted the SSD with noatime, notdiratime and discard. Everything is ext4. The only other device I have mounted is an ntfs partition from another drive, but wasn't accessing anything at the time. Oh, and my browser cache is set to memory. I think that covers it. All of this was also my configuration when previously running 32bit.

[Brian Spisak (bspisak)]

p.p.s. running hd4000 chipset graphics.

[pip pop (spupazza)]

I'd like to add that I have this Hard Lock on both my desktops, mounting a Celeron (sandy bridge) dual core and the other is mounting a i-5 quad core Sandy bridge.
Both system mount a Nvidia vga (gt430 and gt480).
I got those hard locks with Mint 14 and Xubuntu 12.10.
On Xubuntu machine I tried ubuntu Kernels 3.6 and 3.7 (rc7 candidate) and the bugs still affected my system.
I also tried, without any success in eliminating the issue, several Nvidia drivers: 310.10, 313.09 and 304.xx series.

[Charles Hill (chill)]

I've been taking notes on the triggers for the hard freezes I've been experiencing. If you want to see my system specs and my previous findings: (https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/993187/comments/604)

Here are my recent notes:

###
Running programs:
Chrome (several tabs open)
Empathy (receiving IMs)

Event that triggered freeze:
Clicked close tab icon on a tab with a couple video elements in it, but not running, and a lot of images.
###

###
Running programs:
Chrome (several tabs open)
Empathy (no activity)

Event that triggered freeze:
Opened a new partial-window (no tabs in it) as a result of clicking an anchor tag. Within this new window was a flash player, which would require me to click to initiate. The freeze happened before I had the chance to click the player.
###

Google Chrome 23.0.1271.97 (Official Build 171054)

[MickH (nik473-forum)]

On my good old Dell Inspirion 9300 I use dual boot with Windows XP and
ubuntu 12.04.1. LTS 32 Bit
RAM: 2.0 GiB
Intel Pentium M processor 1.73GHz
Graphic: Gallium 0.4 on ATI RV370

I don't use Chrome, only Firefox.

My proposal to analyze the bug is that some guru provides a program which can be run as a background process on computers with the freeze problem.
The program should
- first write a header with the purpose of the file, the email address of the assigned developer and with all relevant system information (hardware and software)
- then log all events of starting / closing of any program directly into a file (e.g. bug993187.log)
- delete the log file when the program is normally terminated (shut-down)

When the system freezed, the bug993187.log file should be sent to the developer which is assigned to the bug.
This developer can then import the information of the files (e.g. in XML format) into a database for analysis.

[MickH (nik473-forum)]

(Did not find how to edit / correct my previous comment after sending)

On my laptop the freeze occures when firefox and/or other programs are open and the computer is idle or does some long-running task without user interaction, like a search in FSLint.

[Brains (brains)]

Good, I've written to Ubuntu's technical board (I hope the distribution list gets monitored).

This is my mail:

Hey there,

First time I write to this list...

Thanks for co-creating Ubuntu. Have been using it since 9.10 as my main OS. All swell and stable until upgrading to 12.04 LTS.

The system got unstable, completely freezing with only a hard reset working to boot it back up. This happens within 10 minutes of usage, without specific scenario's... unfortunately. 12.10 does not solve the problem...

I'm writing because of bug #993187 (https://bugs.launchpad.net/bugs/993187)

It's been active since 02/05/2012 and has been put on "Won't Fix" for the last few months.

Its heat is at 1838 and rising - making it the hottest bug around if I queried the db well.

Can one of you please look into it - I think the best place to start is from the bottom upwards? The bug comments at 600+ are not clean. There are lots of persons posting with a responsive system - not valid for this report. There are a lot who aren't though.

I offered to clean these up, but I don't have a clue how. I suppose it is a permissions thing.

Do look into it and at least comment on it. If I can be of any non-technical help, please advice

Thanks in advance.

Happy holidays.

Joris

PS: back on 11.10 now, which is rock-solid.

[Thai Ly Cuong (thailycuong1202)]

After two weeks looking for and trying solutions by upgrading kernel from 3.2 to 3.3.4 and 3.3.6, changing drivers but the system still completely freezes. Finally I install ubuntu 12.10 and it works for two days without freeze. I havent installed Bumblebee yet. I will install it after a week to see if graphic card driver causes freeze issue.

Again here is my configuration:

- Dell XPS 14 Ultrabook 1.7Ghz Core i5
- HDD 500GB, SSD 32GB stores ubuntu 12.04
- Graphic card 1GB Nvidia 630M

[Brian Spisak (bspisak)]

For everyone still experiencing this problem on stock 12.04, have you tried installing a newer kernel?

The easiest way to do this:

1. Use Software Center to find and install Synaptic Package Manager
2. Start synaptic from a terminal: sudo synaptic (it won't open from unity for me *shrug*)
3. In the Quick filter box, type: 3.5.0-21
4. Select all 4 of the packages and click apply

linux-signed-image-3.5.0-21-generic
linux-image-3.5.0-21-generic
linux-headers-3.5.0-21-generic
linux-headers-3.5.0-21

The latest version as of the time of this writing is 3.5.0-21.32~precise1 seems to have fixed my problem.

Prior to installing this on my stock 12.04.1-desktop-amd64 install, I was getting "true" hard freezes at least once a day with very light use. I've been running the new kernel for a few days now without problem.

There are also other bugs tracking more specific hangs/freeze/lockups.
Example: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/999910

This bug seems to be all over the map, so for those of you trying to find a solution, you might have better results searching further. Just a suggestion. I know it's frustrating (and I was in the same boat) but it's either that or live with it....

Regards...

[Kayvan Javid (k-javid)]

@Brian: As per my comment #590 i tried the Quantal 3.5 kernel from the precise repo, and it did not help.

I have also given a fresh install of Quantal with its stock 3.5 kernel a go on a spare drive I had lying around, and within 20mins of playing a video in XBMC, hard lock.

Here is an Xmas present from me (well Canonical and the kernel devs really), to everyone on this thread, just installed the mainline daily build kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline/daily/current/ which happens to now be 3.8, on my Quantal fresh install, its been rock solid with an uptime of 14hours. Playing video and using XBMC like this previously would have locked several times by now.

Fingers crossed it has solved it for me, someone, somewhere has plucked the needle from the haystack and this will go away in Ringtail, or whichever distro gets 3.7 - 3.8 kernel.

[Ethan (keo-g)]

same here too, using Ubuntu 12.04 on a new computer system with grahpics:

$ lspci -v | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation Ivy Bridge Graphics Controller (rev 09) (prog-if 00 [VGA controller])

[Dmitry (df2)]

Same here, system freezes time to time. It seems started to freeze more often recently.

$ lspci -v | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation Ivy Bridge Graphics Controller (rev 09) (prog-if 00 [VGA controller])

$ uname -a
Linux desktop 3.2.0-35-generic #55-Ubuntu SMP Wed Dec 5 17:42:16 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

$ cat /etc/issue
Ubuntu 12.04.1 LTS

[audunpoi (audun-didgeridoo)]

My version of this bug:
complete freeze: no tty, no ssh.
happens almost exclusively when screensaver starts or similar power-management related stuff. (turning everything related to power-management off did not help though.) Happens only with my EVGA GeForce GTX 560Ti graphics card. Tried differnt kernels and many Nvidia drivers. None was stable. I'm using the onboard graphics for now, and will try again later with new drivers and kernels. I'm on 12.04 and have to stay til next LTS.

[Kristof A (kr-adr)]

Since I installed Linux on my laptop about 1,5 years ago (Dell e6410, first Ubuntu 10.04 LTS, now Xubuntu 12.04 LTS both 64bit) I have had unpredictable system freezes.

It happens while working on the laptop and suddenly everything freezes: mouse does not move anymore, screen does not update, Ctrl+Alt+F1/F2... to go to terminal does not work anymore, closing laptop lid does not make system go in suspend,... only remedy is holding power button to shut down laptop and restart it. Once I also tried to ping the box from another machine and that also did not work. There is also nothing in syslog, kernel.log etc that indicates freeze as far as I can see.

Sometimes this happens twice a day, sometimes once every 5 days but it always comes back. I'm using my laptop about 8 hours a day during weekdays. I keep it up to date with the provided LTS updates but this issue keeps on being there. I like the speed and usability of my system but It is just annoying not to be able to trust the stability of my machine. (I had suspend/hibernate/resume issues before but those are solved now)

I see no difference in frequency of freezes when comparing Ubuntu 10.04 vs Xubuntu 12.04.

[Jussi Lind (jussi-lind)]

I started to suffer from this bug during this week. Last time I was listening to music and suddenly the music started to loop the last 0.5-1 secs and everything else just froze. This has happened to only one of my computers, running Ubuntu 12.04 64-bit and Intel hardware:

$ uname -a:
3.2.0-35-generic #55-Ubuntu SMP Wed Dec 5 17:42:16 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

$ lspci -v:

-- clip --

00:1b.0 Audio device: Intel Corporation Panther Point High Definition Audio Controller (rev 04)
 Subsystem: Giga-byte Technology Device a014
 Flags: bus master, fast devsel, latency 0, IRQ 53
 Memory at f7f10000 (64-bit, non-prefetchable) [size=16K]
 Capabilities: <access denied>
 Kernel driver in use: snd_hda_intel
 Kernel modules: snd-hda-intel

00:02.0 VGA compatible controller: Intel Corporation Ivy Bridge Graphics Controller (rev 09) (prog-if 00 [VGA controller])
 Subsystem: Giga-byte Technology Device d000
 Flags: bus master, fast devsel, latency 0, IRQ 51
 Memory at f7800000 (64-bit, non-prefetchable) [size=4M]
 Memory at e0000000 (64-bit, prefetchable) [size=256M]
 I/O ports at f000 [size=64]
 Expansion ROM at <unassigned> [disabled]
 Capabilities: <access denied>
 Kernel driver in use: i915
 Kernel modules: i915

-- clip --

I didn't see anything related in the kernel log.

[Kayvan Javid (k-javid)]

For all those with this issue, try the current mainline kernel to see if it helps - I have not had a lock in over a week now running Quantal with a 3.8 mainline kernel - which is the most stable it has been in months, since switching to Ubuntu 12 series.

For those who have never done it before see:
https://wiki.ubuntu.com/Kernel/MainlineBuilds

Using the latest current build:
http://kernel.ubuntu.com/~kernel-ppa/mainline/daily/current/

[Bertilo (bertilow)]

"try the current mainline kernel"

No. Didn't help. My situation is exactly the one described in #625. I'm on Linuxmint 14 KDE, with the mainline Kernel 3.8.0-999. I've had two freezes in the last two days, the last one two minutes ago. I've tried everything that's ever been suggested. Nothing helps. It's been going on for months...

(I've been on Linux for the last 12 years or so, but this bug actually has me thinking abour switching to something else. But to what? Windows is an ocean of pain. OSX is ridiculous. Should I just give up on computing? But it's my living!)

[Victor Mitin (caesarmv)]

Hi Guys, the same issue here. Intel i3 ivy bridge, Intel onboard gpu, i386 pae kernel, latest updates. tried ubuntu/xubuntu/lubuntu, no result

[nano (daliaetnano)]

Hi everybody,

I had exactly the same problem and I fixed it.

My laptop asus n71jq was always freezing (several times a day). Even
CTRL+ALT+SysRq REISUB was not working.
It has two hard drives with dual boot:
 - one with kubuntu 12.10 and kernel 3.5.0-19
 - one with windows seven (on an ntfs partition).
Because I also had an overheating issue (solved with my vacuum cleaner),
it crashed a few times and windows file system had many errors (asking me
tu run chkdsk)
I was not using windows very often so I didn't care about the errors and I
always cancelled chkdsk.

On Kubuntu, the windows partition was mounted at start up.
I believe that the file system errors on the NTFS partition were probably
causing the freezes.

After I ran chkdsk on windows partition, I didn't have any more freeze.
NTFS support on Linux is probably not as reliable as on Windows.
I hope it can help one of you.

Best regards,
Emmanuel

Le 3 janv. 2013 10:45, "Victor Mitin" <email address hidden> a écrit :

> Hi Guys, the same issue here. Intel i3 ivy bridge, Intel onboard gpu,
> i386 pae kernel, latest updates. tried ubuntu/xubuntu/lubuntu, no result
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/993187
>
> Title:
> ubuntu 12.04 completely freezes frequently.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/993187/+subscriptions
> H

[jt (pc-nv)]

just another bit of info...even though the previous comments really cover the problem pretty well...i have same problem and i don't think it hardware related...i installed ubuntu 12.04.1 about one month ago and find it can freeze up at random times and it happens both when you are using the system or when it is just there sitting idel...it is almost as though ubuntu is checking for updates or something like that...

my system locks up to where no mouse or keyboard will wake it up, not even a quick push of the powere button.

i have to hold down the power button for several seconds till the system powers off and then power back up to get ubuntu runing again.

just for grins and giggles i installed ubuntu 12.04.1.LTS on an older HP DESKTOP using an Intel Pentium 4 CPU 3.2 GHzX2 with 2 GB of memory and 155.4 GB of disk space...the OS TYPE is 32 BIT!

I love it when i runs...however it will freeze in maybe a day or make it 5 days before freezing...i thought it was the HP monitor or mouse with the roller so i switched them out and the problem still happens...

hope this helps nail down the problem...keep up the good work...we really do appreciate it...

jerry

[Rabit rabit (o2918474)]

I wonder if this is a ubuntu problem or kernel problem or driver problem.

If this bug is kernel or driver problem, then other linux distro also suffer the same problem. Does anybody know if other linux have the same problem?. We may just not hear it because there are not too many bug reports on other distros as there are less users compared to Ubuntu and Mint.

For those who move to Mint, I'd like to know if they still have the bug or not. Or they just move the bug report to Mint bugs reporting.

But this bug and especially the lack of acknowledgment from upstair is getting ridiculous.

I wonder what percentage of ubuntu/linux users actually experiencing this hard lock bug. Is it huge like more than 20% or small like 0.0002% users?

This is such a crucial bug for me that I'm actually thinking about moving to other system.

[audunpoi (audun-didgeridoo)]

Hi Rabit. For me it's the same with Kubuntu or Mint. It does not seem to matter. I didn't try any other distros, though this problem certainly motivates me.

[Martin Wildam (mwildam)]

On Mon, Jan 7, 2013 at 11:04 AM, audunpoi <email address hidden> wrote:
> Hi Rabit. For me it's the same with Kubuntu or Mint. It does not seem to
> matter. I didn't try any other distros, though this problem certainly
> motivates me.

This confirms my experience, that all of the Debian-based distros
currently have quality issues and the problem lies deeper than just
related to unity or compiz.

[nuttzo33 (slucas1979)]

The freezes happen for me not only on debian based distros but in fact every distro, the only one so far which hasn't had it happen is ubuntu 13.04 using the 3.8 rc2 kernel.

I was getting the freezes with both nouveau and the proprietary nvidia driver but so far kernel 3.8 on 13.04 has been rock solid for 3 straight days.

[nuttzo33 (slucas1979)]

I also get the freeze happen regularly when using a live cd or just following a fresh install of a distro(usually in 5-10 mins)

[Brains (brains)]

Yep... I am more and more convinced the root of this bugger is a kernel
problem.

I didn't have success with any kernel higher than 3.2, although I only
tried standard distro kernels up to now.

I did try ubuntu 12.x, the last two mints and fedora. In degrees of
stability, only ubuntu had the deep freeze this bug is about. Mint got
unstable when switching from nouveau to nvidia propriety (and nouveau is
not up to "speed" literally). Fedora was solid.

--- sent from my mobile . Please excuse the brevity, spelling and
punctuation.
On Jan 7, 2013 12:16 PM, "Martin Wildam" <email address hidden> wrote:

> On Mon, Jan 7, 2013 at 11:04 AM, audunpoi <email address hidden>
> wrote:
> > Hi Rabit. For me it's the same with Kubuntu or Mint. It does not seem to
> > matter. I didn't try any other distros, though this problem certainly
> > motivates me.
>
> This confirms my experience, that all of the Debian-based distros
> currently have quality issues and the problem lies deeper than just
> related to unity or compiz.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/993187
>
> Title:
> ubuntu 12.04 completely freezes frequently.
>
> Status in “linux” package in Ubuntu:
> Won't Fix
> Status in “plymouth-theme-int2mil-ubuntu-11.04” package in Ubuntu:
> Fix Released
> Status in “xserver-xorg-video-intel” package in Ubuntu:
> Won't Fix
> Status in “linux” source package in Precise:
> Won't Fix
> Status in “plymouth-theme-int2mil-ubuntu-11.04” source package in Precise:
> Fix Released
> Status in “xserver-xorg-video-intel” source package in Precise:
> Won't Fix
>
> Bug description:
> Update: 6/12/2012
> This bug is about a complete system lock-up. No other TTYs can be
> started. Mouse doesn't move. Keyboard doesn't react. The only solution is
> hard reset.
>
> Seems to happen on a variety of configurations, including nVidia, ATI
> and Intel graphics.
>
> If you are still able to TTY or SSH into other sessions, move the
> mouse or use the keyboard, file another bug.
>
> Thx. Joris V. (brains).
>
> Update: 5/21/2012
> Updating the kernel to 3.3.6 as suggested by Michael in #91, the system
> seems stable, no freezes yet in 5-6 hrs of using and watching videos for
> couple of hrs.
>
> Original description:
> I recently installed newly released ubuntu 12.04 LTS 64 bit version on
> my desktop. And it is frequently freezing, for the first few hours it ran
> smoothly and when I started watching videos it started freezing randomly.
> I have to use hard restart every time.
> Initially it was only during videos but now even during normal browsing
> it is freezing.
>
> I am using on board graphics and do not have any graphics card
> installed.
>
> Can someone please help me here, I really love the new looks of 12.04
> and it bugs me not being able to use :(
>
> Below is my hardware configuration:
> Processor: Intel CORE i3 processor (2nd generation)
> Board: Intel® Desktop Board DH67BL
> Ram: 4GB
> Graphics: On board
> HDD: 500 GB
>
> Please let me know if you need more information, or any specific logs
> I can capture (an...

[yannick L (yannick-lorenzat)]

Just to help I have the same kernel on servers machines and desktop machines. But only the desktop machine freeze. So maybe it is a kernel problem, but releated to graphical environnement

[Daniel (drgreen-bg)]

I've red every post in this topic and i can see that it is not ATI or Nvidia. It is kernel and about power management.
Maybe i'm wrong but i think everyone who has this freezes is using laptop.
Strange is that if i'm running VM where WinXp is loaded i have no freezes so far and i'm running it almost half the time.

[Brendan Brigham (brigham)]

I was having the problem using desktop.
Intel i3
MSI H55m-E33 mobo
Asus ENGT 240 gpu
8g ram at the time, now 16g

Constant freezes with no recourse other than powering down. I am now using Linux Mint 13 Cinnimon, 3.2.0-23generic with not so much as one hickiup. When I first switched to Mint I was still on the 8g ram so that's a non issue. I give up wondering what the issue really is, Mint works for me. I think there have been a couple who have had a problem or two though, IDK.....

[Martin Wildam (mwildam)]

On Mon, Jan 7, 2013 at 11:28 PM, Daniel <email address hidden> wrote:
> I've red every post in this topic and i can see that it is not ATI or Nvidia. It is kernel and about power management.
> Maybe i'm wrong but i think everyone who has this freezes is using laptop.

Yes, Laptop here. Cannot say 100% if it was only if no VM was running,
but I guess, one VM (mostly virtualbox but sometimes also
vmwareplayer) was also running when freezing (but maybe not as the
active window). I also run them a lot and often more than one.

Best regards, Martin.

[Daniel (drgreen-bg)]

@Brendan can you tell were your freezes when it is about to sleep?

[Brendan Brigham (brigham)]

Hi Daniel, sleep disabled. I wasn't using any screen savers or anything. I could be doing anything from working on my conky in gedit, reading a text document, to watching a video, didn't matter how hard I was using anything. When it wanted to freeze, it would freeze. At times it would go a couple hours and I would think I was out of the woods, then I could be every 5 minutes. No rhyme no reason.

[yannick L (yannick-lorenzat)]

 >Maybe i'm wrong but i think everyone who has this freezes is using laptop.
 >Strange is that if i'm running VM where WinXp is loaded i have no freezes so far and i'm running it almost half the time.

No offense, but you're wrong. I have a looooooot of freeze on desktop computer

[Gérald Gurtner (gerald-gurtner)]

@Daniel: I had the problem with a desktop too (#523). The problem was
solved with me by installing the proprietary driver for the nvidia
graphic card. Of course it's not a general answer to the problem but it
might help some of you.

-G

On 01/07/2013 11:28 PM, Daniel wrote:
> I've red every post in this topic and i can see that it is not ATI or Nvidia. It is kernel and about power management.
> Maybe i'm wrong but i think everyone who has this freezes is using laptop.
> Strange is that if i'm running VM where WinXp is loaded i have no freezes so far and i'm running it almost half the time.
>

[nuttzo33 (slucas1979)]

Now gone fourth straight day without a freeze on ubuntu 13.04 kernel 3.8 rc2

[Nikolay Pohodnya (nick-pohodnya)]

I have T430s laptop for couple month with intel graphics and was trying to cure freezes right from the first ubuntu install. Solution was weird, but the following helped me: I've gone to BIOS and disabled "CPU Power Management". On kernel 3.7.1 freezes disappeared for me only after this. However, power consumption is good and CPU frequencies are changed according to load.

[Rabit rabit (o2918474)]

> Now gone fourth straight day without a freeze on ubuntu 13.04 kernel 3.8 rc2

a glimmer of hope....

Anyway to install 3.8 on 12.04?

[Sergey Fionov (sfionov)]

Took 2 hangs today on 3.8-rc2 with default parameters.

I use i915_enable_rc6=0 and powersave=0 to avoid hangs.

[Daniel (drgreen-bg)]

After following #620 i'm OK for two days now with no freezes but i face some other problems and crashes. I think many different problems are leading to same end and that is why for some of you one could solve but for other not. Main ways i see here that solved this for some people are 3.
First try to disable computer power managment as discribed in #648.
Second is upgrading kernel and if you don't know haw you could read #620.
Third is for those that really have video card problems and they should look for drivers, installing the latest driver doesn't means it is the most stable.
Those 3 should cover most of the cases.

[Simon Eriksson (simon-frewins)]

Is there a solution to this problem? My computer has been essentially unusable for a fortnight now.

[Martin Wildam (mwildam)]

On Wed, Jan 9, 2013 at 9:15 PM, Simon Eriksson <email address hidden> wrote:
> Is there a solution to this problem? My computer has been essentially
> unusable for a fortnight now.

@Simon: Which of the already mentioned did you already try?
And which variant of Ubuntu are you using?

[nickg (nickg-i)]

I am also experiencing this issue.

Ubuntu 12.04.1 64bit
4GB RAM
AMD HD 4850

Seems to happen when I'm using chrome or firefox

total system lockup, cant move mouse or use keyboard, then pc reboots after 5 - 10 seconds automatically.

Please help! I really want to use Ubuntu, just switched from windows 7...

[Andy Brook (javahollic)]

For a stable build I had to rollback to 11.10, I can't take the downtime
associated with diagnosing this, 12.04 wasn't stable for me, 12.10 didn't
cure it either, fingers crossed for 13.04. Until everyone says yay all
fixed, I wont be upgrading ;(

Ubuntu 64bit / 12GB / SSD / nVidia Corporation G84 [GeForce 8600 GTS]

On 10 January 2013 14:20, nickg <email address hidden> wrote:

> I am also experiencing this issue.
>
> Ubuntu 12.04.1 64bit
> 4GB RAM
> AMD HD 4850
>
> Seems to happen when I'm using chrome or firefox
>
> total system lockup, cant move mouse or use keyboard, then pc reboots
> after 5 - 10 seconds automatically.
>
> Please help! I really want to use Ubuntu, just switched from windows
> 7...
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/993187
>
> Title:
> ubuntu 12.04 completely freezes frequently.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/993187/+subscriptions
>

[Martin Wildam (mwildam)]

@nickg: Did you try a higher kernel like 3.5.0.21 (that's what I
currently use - http://archive.ubuntu.com/ubuntu/pool/main/l/linux/)?
It solved my freeze-problems.

You can get it with a bash script like this:
#!/bin/bash
#Downloads Ubuntu variants of given kernel in 64-bit flavor
KERNELVER="3.5.0-21"
KERNELSUB="32"
KERNELFLAVOR="_amd64"
KERNELCOMMON="_all"
SEP="_"
mkdir -p /data/shared/packages/Kernel/kernel-$KERNELVER-ubuntu
cd /data/shared/packages/Kernel/kernel-$KERNELVER-ubuntu
wget http://archive.ubuntu.com/ubuntu/pool/main/l/linux/linux-headers-$KERNELVER$SEP$KERNELVER.$KERNELSUB$KERNELCOMMON.deb
wget http://archive.ubuntu.com/ubuntu/pool/main/l/linux/linux-headers-$KERNELVER-generic_$KERNELVER.$KERNELSUB$KERNELFLAVOR.deb
wget http://archive.ubuntu.com/ubuntu/pool/main/l/linux/linux-image-$KERNELVER-generic_$KERNELVER.$KERNELSUB$KERNELFLAVOR.deb
wget http://archive.ubuntu.com/ubuntu/pool/main/l/linux/linux-image-extra-$KERNELVER-generic_$KERNELVER.$KERNELSUB$KERNELFLAVOR.deb

Best regards,

Martin.

[Martin Weise (shatai)]

I have tested all kernels from 3.2_amd64-3.5_amd64 that were shipped via updates
and none worked for me.

After that i installed the 3.8.0-999_amd64 and tested with the options from #650
and as far as I can tell, the options 'powersave=0 i915.i915_enable_rc6=0'
did not fix the problem for me.

When using the 'i915.i915_enable_rc6=0' option, the X-Server behaves totally
weird (cancels session; displays TTY cursor on X-Screen...).

If I enable the option 'i915.i915_enable_rc6=1' (I know there are some other levels),
the X-Server behaves fine, but the complete computer freezes after some time
without any warning.

With the 'powersave=0' option everything is fine, even CPU frequencies are
adjusted dynamically.

After all that testing and other bug reports from NVIDIA/ATI users, I guess the problem
is located in a kernel driver for intel chipset (if the NVIDIA/ATI problem are not related to
old blob drivers).

What else speaks for a kernel bug is that I have still a 3.0.0-26 kernel running and everything
is fine with that version.

As I think this is a chipset problem this is my conf:
MB: Intel DH67CF
CPU: Core i5-2500K
GRAPHIC: Intel HD3000
RAM: 8GB
LINUX: Ubuntu 12.10 64Bit (kernel 3.0.0-26_amd64)

Maybe this helps to sort out the problem somewhat.

[nuttzo33 (slucas1979)]

Still no freezes and now on kernel 3.8 rc3 64 bit , because i am using ringtail then maybe the combination of 3.8 kernel and updated x org and compiz packages may have solved the issue for me.

[Simon Eriksson (simon-frewins)]

Hi Martin,

I am on 12.04. Basically I tried to install Steam and it prompted for
updating of nvidia drivers. Thereafter the problem began.

Presuming it was an nvidia driver problem I did a complete purge and
installed an earlier version. Didn't work. Purged again and tried using
nouveau. Worked once then crashed and problem resumed as before.

I have read the bug feedback that mentions kernel updates but some say it
doesn't work for them.

I am considering instaling lucid lynx instead and hoping that a s clean
install will sort out the problem, whatever it is.

If you have any suggestions for a solution that I have missed that would be
great.

But the problem crash now often happens prior to the system booting ubuntu,
subverting attempts to even boot directly into safe mode or into a CLI.

I am new to Ubuntu (six months now) and don't know how to do most of the
things discussed in the forums. One thing I do know is that I need a PC
that works!

Many thanks for your time.

cheers

Simon

On Wed, Jan 9, 2013 at 9:52 PM, Martin Wildam <email address hidden>wrote:

> On Wed, Jan 9, 2013 at 9:15 PM, Simon Eriksson <email address hidden>
> wrote:
> > Is there a solution to this problem? My computer has been essentially
> > unusable for a fortnight now.
>
> @Simon: Which of the already mentioned did you already try?
> And which variant of Ubuntu are you using?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/993187
>
> Title:
> ubuntu 12.04 completely freezes frequently.
>
> Status in “linux” package in Ubuntu:
> Won't Fix
> Status in “plymouth-theme-int2mil-ubuntu-11.04” package in Ubuntu:
> Fix Released
> Status in “xserver-xorg-video-intel” package in Ubuntu:
> Won't Fix
> Status in “linux” source package in Precise:
> Won't Fix
> Status in “plymouth-theme-int2mil-ubuntu-11.04” source package in Precise:
> Fix Released
> Status in “xserver-xorg-video-intel” source package in Precise:
> Won't Fix
>
> Bug description:
> Update: 6/12/2012
> This bug is about a complete system lock-up. No other TTYs can be
> started. Mouse doesn't move. Keyboard doesn't react. The only solution is
> hard reset.
>
> Seems to happen on a variety of configurations, including nVidia, ATI
> and Intel graphics.
>
> If you are still able to TTY or SSH into other sessions, move the
> mouse or use the keyboard, file another bug.
>
> Thx. Joris V. (brains).
>
> Update: 5/21/2012
> Updating the kernel to 3.3.6 as suggested by Michael in #91, the system
> seems stable, no freezes yet in 5-6 hrs of using and watching videos for
> couple of hrs.
>
> Original description:
> I recently installed newly released ubuntu 12.04 LTS 64 bit version on
> my desktop. And it is frequently freezing, for the first few hours it ran
> smoothly and when I started watching videos it started freezing randomly.
> I have to use hard restart every time.
> Initially it was only during videos but now even during normal browsing
> it is freezing.
>
> I am using on board graphics and do not have any graphics card
> installed.
>
> Can someone please help me here, I really love...

[nuttzo33 (slucas1979)]

#659

What you are describing sounds like a different bug to this one, this bug is related to random full freezing where the gpu locks and mouse and keyboard are unresponsive and the computer must be manually restarted by holding the power button down.

I have had success with kernel 3.8 on both raring ringtail and now back on quantal with the 3.8 rc3 kernel and the 313.09 drivers from the xorg edgers ppa with no freezes at all.

[Rabit rabit (o2918474)]

Two hard locks yesterday after a few days without. (no mouse, no keyboards, no ssh, dead, keyboard lights blinking for 15 seconds then automatically reboot itself)

Happens mostly

[Rabit rabit (o2918474)]

Two hard locks yesterday after a few days without. (no mouse, no keyboards, no ssh, dead, keyboard lights blinking for 15 seconds then automatically reboot itself, if the sound was playing then it loops)

My observation so far: They happen mostly :
- Many times after playing video/music either local MP4 or youtube or flash streaming videos before. But not always. And not always while playing.
- While moving mouse
- Firefox is running. ( I have chrome but rarely used)
- While computer is idling. (actually it was downloading something on firefox)
- Virtualbox is running

I've tried many kernel and now I'm on 3.6.3-030603-generic
Nvidia driver version: 3.04.64

CPU: Intel Core2Duo 2.4Ghz
MB: Asus P5LMX - 2 Gb ram
Ubuntu 12.04 LTS, always updated

I'm starting to lose hope....

[nuttzo33 (slucas1979)]

Rabit, try the 3.8 kernel and update the nvidia driver to 310.09 or 313.09 driver, i have had no freezes in two weeks with this configuration but 3.7 kernel and lower has been freezing regularly.

[rsoika (ralph-soika)]

I have updated to 3.8.0-030800rc3-generic kernel. And again today I have had a complete freeze during a video chat. This is the same behaivor as with kernel versions 3.6.10, 3.7.1 and 3.72 before.
The only kernel option I a m using is "i8042.noloop" to enable mousepad.

Ubuntu 12.10 64bit
Intel Core i7-3517U Ivy Bridge
8 GB DDR3
256 GB SSD
Intel HD Graphics 4000

[nuttzo33 (slucas1979)]

rsoika that's unfortunate, i have been using kernel 3.8 for a couple of weeks now without a freeze where as before i would probably get one every couple days.

Are you using an integrated graphics chip ? I am using an nvidia geforce 210 with proprietary drivers(310.19) so perhaps your freeze is different to mine?

Asus p8p67 pro
Intel core i5-2500k
128gb sdd
nvidia geforce 210
8gb ram

[Nicholas Musumeci (thefascmailbox)]

I have very similar issues to many here. It happens when using VirtualBox, Firefox (occasionally), or most obviously, when watching a video. It happens on VLC media player and with Ubuntu Movie player. I have done something for a couple days to stop the freezing. It works, however the workaround is not ideal, and not everyone here will be able to do it. It all depends on your machine. I built my PC myself, so I have a lot more control over my computer than those with laptops do.
This is my desktop:
-Asus-P8B75-M/CSM Motherboard
-Intel Ivy Bridge- Core i5 3570K CPU
-8GBs of Corsair XMS3 RAM @1333MHz
-500W Corsair Power Supply
-1TB Toshiba/Hitachi HDD 7200RPM
-Cooler Master Hyper-TX3 CPU HSF (Probably doesn't matter--but included for good measure)
*I AM using Intel HD Integrated Graphics 4000
My workaround--tested heavily--is disabling C3 and C6 states in the BIOS CPU advanced options menu. I leave C1E Halt and Intel Enhanced Speed Step Technology enabled. This drastically increases power usage, therefore increasing temperature, and I'm sure it's increasing voltage and current. I have no way to monitor that within Ubuntu, all I can measure is CPU frequency and temperature. My idle temps, which are usually 36-39 Celsius, have increased to 41-44 Celsius, which is quite drastic if you think about it. I'm most worried about wasted energy, which doesn't just cost me, but also costs the environment.
If any of you have control over c-states in your BIOS, turning off anything other than C1E should stop the complete freezes. I should note that my freezes stay frozen until I intervene by turning the power supply off. If I'm watching a video on local storage(or even on the internet), when it freezes, the audio from the video stutters and repeats itself. Think of a skipping CD player (CD? what's that?? lol), and thats how it sounds . The keyboard and mouse (both USB) don't respond at all. There are no blinking lights on the keyboard. The image that was on screen before it froze, stays on screen, and again-- if there was any type of audio playing(music or video), the same sound skips over and over.
If anyone has any more questions, please don't hesitate to ask.

[rrich1974 (richardsdma)]

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1095232

this is how i solved the freezing....i never had any freeze for tha last two weeks.

[rsoika (ralph-soika)]

@slucas1979
I have only Intel chip set with internal HD4000. no external graphic chip.

@richardsdma
I added now the kernel option "pci=nomsi"
I will report if it helps.

[rsoika (ralph-soika)]

adding the kernel options "i8042.noloop pci=nomsi" did not solve the problem for me (kernel version 3.8.0-030800rc3-generic)

[Bertilo (bertilow)]

A complicating factor with this bug is how random it is. Sometimes you get several freezes a day, and sometimes it can be weeks between the freezes. Totally random. I think many of the reports that the bug has gone away are just cases of the bug not showing itself for several days or even weeks, although it's still there.

I really thought I was out of the woods, since the bug hadn't hit me for a week or two, but then, a few minutes ago, my computer froze again. I was doing work at the time, and was not very happy (to put it mildly...) although luckily no data was lost. The next time I might not be so lucky.

So, since this bug is marked as Wontfix, and since no developers seem to care, I'm off to look for another distro. Bye!

[nuttzo33 (slucas1979)]

Bertilo, unfortunately i have found that i get the freezes on other distros i have tried as well, fedora seemed to be really bad with them but i am currently back on ringtail and the latest nvidia drivers and have not had a freeze in 2 or 3 weeks so i will continue to use and if i don't get a freeze for a month then i will considered the issue solved.

[Matt C (proteus400)]

Same problem here, freezes were infrequent on 12.04, only occasional. Since some updates were installed on 14-01-2013, freezes happen at least once a day to my work PC, both when idle and loaded.

Symptoms that vary:
  - Black screen (latest) OR oops dump screen OR corrupt memory graphics on entire screen
  - Stack trace seems to vary

Symptoms always common:
  - Always requires holding down power button.
  - Nothing functions (caps lock, no network activity)

Suspect GPU freeze / graphics driver.

I have experienced this same problem on two identical, side-by-side Ubuntu 12.04 machines, though one has become worse than the other (the one used the most).

HW:
01:05.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI RS880 [Radeon HD 4200]

I downgraded to a .35 kernel this week to see if the latest kernel upgrade e.g. a proposed update was the cause, but it has happened again since the downgrade.

I am going to try the proprietary Radeon driver.

[nuttzo33 (slucas1979)]

Matt C have you tried the latest 3.8 kernel?

[Fredde (fredde-iki)]

For me, it's definitely compiz/unity that causes this. I Installed xfce-desktop and run it fo a few days, no freezes whatsoever. Then I enabled window decoration, moving windows and the other usual compiz-effect, and the problems reappered after some hours of use.

I disabled the compiz-effects again, and now it's been running smoothly for more than a week without reboots. I'm going to run xfce-desktop without compiz until I'm sure this is really solved.

[Anders S (anarchy-andy)]

I am experiencing this bug on Kubuntu 12.04 64bit with the 3.2.0-36 kernel. I have a Lenovo X230 with integrated Intel graphics. I dont see any patterns in the occurrences of this bug, it happens from time to time. Let me know if I can help with any information! This is very frustrating :(

[Lutz Andersohn (landersohn-m)]

Forever it's worth, this problem affects me as well in the "nothing moves" version, i.e. no mouse,. no keyboard, nothing.
I experienced this in Classic Gnome (gnome-session-fallback) as well as in kfce.
I am running an hp with intel i7 cpu, Intel ivy bridge graphic (It has a hybrid graphics board, have not had the crash when using the nvidia during game playing using bumblebee). My kernel is 3.2.0-31-generic #50-Ubuntu SMP Fri Sep 7 16:16:45 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

I considered Ubuntu/Linux to be a rock solid OS, far superior to anything else out there. Now I must say, my Windows box runs more reliable than 12.04, a very sad development.
I think it's an outrage that this bug is marked as "Won't fix" in an LTS release.

[macko (erdosboti)]

It happens to me more and more often on 12.04.
I can't believe it is set to 'won't fix'. The first thing everybody expects from an operating system is reliability and stability. And this is an LTS for god sake. I like Ubuntu but this kind of attitude and the annoying little bugs that were once solved and then come back again with an update direct me towards Mac :(
I wanted to be constructive but I could not find any relevant information in my log files and I'm really angry at the moment.

[maxime (mxpx51)]

ive been reading those threads for 3-4 days... and i think i might have found a solution that could work for some. Well... it works for me, Its been stable for a few hours and i could never pass the 10mins mark until now.

I have a HP Pavilion 92077I with more ram.
I tried Ubuntu Desktop, Server (+kde), Server (+Gnome). Version 12.10 and 12.0.4.
I tried Latest Mint and latest Debian... all the same results... total freeze after a few mins in the graphical interface.
Complete lockdown. No mouse, no ALT+F1...nothing.
Had to hard reboot everytime. In a few cases i couldnt even get through the whole install process. I/O Errors. (with 2 different drives)

God im tired...

I tried everything. Changing the HD, the video card, checking the RAM. Switched the cpu, the network card, etc. With all the combinations above.

Then i went to the BIOS ( i hate myself for not having tried that before) and found this setting:

"on chip serial ata ": Disabled/Combined Mode/Enhanced Mode/Sata Only

It was on "enhanced" for the whole time. After setting it to : Disabled.. if finally worked!

I should have known that. My drive id IDE. Cant believe i missed that.
If you do have an SATA drive..make sure its set accordingly in the BIOS.

Anyway... maybe its not all our issue here...but i thought maybe it could help someone.

I created an account here just so i could post this. Even if it helps only one person, then mission accomplished.

Good luck everyone

[maxime (mxpx51)]

Nevermind. System froze again

[Rabit rabit (o2918474)]

hahaha maxime, welcome to the club!

happens to me lots of time when I suspected the freezing is gone, then it hits you... bang!!!

@shayne,
which version of 3.8 exactly are you using? Can someone else confirm that 3.8 is good?
Seems like I read somewhere it still freezes.

[rsoika (ralph-soika)]

I have tested kernel 3.8.0-rc3 and 3.8.0-rc4.
With both I still have freezes.

[nuttzo33 (slucas1979)]

Unfortunately the freezes are still present for me with the 3.8 kernel although they seemed to be less frequent and i went nearly 3 weeks without one they are still there.

I have had to return to windows and will no longer be using linux until this is fixed or i buy a new computer which will likely be many years away.

[Vilbjørg Broch (vilbjorg)]

, installed ubuntu studio 12.04.1 64bit aprox 2 weeks ago ,clean install all updates and suggested drivers added
about 50 total freezes in the course of the 2 weeks,.. all freezes happend - no exception - when using mouse and/or touchpad. most happend in firefox but it also happend in pd when adjusting window size. no possibility to access terminal via keybord, left with hard shutdown every time.
system
 i73740QM
P170EM
Intel Ivy bridge graphics controller (rev 9)
AMD nee ATI 6800
4*8Gb Sodimm DDR synchronous 1600
Samsung SSD 830

I have been trying to look at the startup logs the last days with the dmesg command , every time i see ff42c50230 error 4 in libX11.so.6.3.0[7f --and the varying numbers
-- no idea which logs could be useful for you good people.. if any drop a note

before this version i had ´ńormal'ubuntu 12.04 32 bit on the computer for a few weeks. no crashes . I might return to that for the time being.
thanks

[rsoika (ralph-soika)]

Today I had again another total freeze.
I noticed something which possibly might be helpful. I use a laptop and when my laptop freezes today , I plugged off the power supply. The laptop switched off immediately!, as if I had no battery. This was strange because the battery was full charged in this moment.
As it has been discussed here already often over the PowerSave option I thought that this maybe could be a helpful note.

I am running Intel i7 chip set with internal HD4000, Kernel version 3.8.0-rc4.

[rsoika (ralph-soika)]

Please forget my last comment about the power supply. This was a test with kernel version 3.2.27. With current 3.8.0-rc4 this was not an issue - after system freeze I could plug of the power and system was unchanged in freeze mode with battery supply. So the information was maybe not very helpful.

[AnAkIn (anakin-cs)]

I'm having the same issue, it appeared not too long ago.

Kubuntu 13.04 with xorg-edgers PPA.
I'm using the nvidia-313 driver.

Linux user 3.8.0-2-generic #6-Ubuntu SMP Fri Jan 25 22:03:57 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

[AnAkIn (anakin-cs)]

Sorry for double posting.

There is nothing at the time of the crash in syslog. I do have something in Xorg.0.log.old though.

http://pastebin.com/B9CPJrcc

[Qu Bit (qbit-v)]

running Mathematica 7 on 12.04, DELL Latitude E6430
and working on a notebook
very reliably and rather quickly reproduces the bug of complete freeze.

regrettable... and annoying.

[BotonChou (botonchou)]

Same problem bothers me almost every hour.

Here is my situation and what I found.

CPU: i7-2600
GPU: AMD HD 7850 Gigabyte (using FGLRX driver)
Motherboard: ASRock Z68 pro 3
RAM: 8GM
2TB HDD + 120GB Intel SSD
Ubuntu 12.04 with kernel 3.2.0-36-generic

No other TTYs can be started "using Ctrl + Alt + F1, F2..."
, and mouse and keyboard was locked too.

Bu ,"Everything" seems to be keep running while the screen freeze.
I can still listen to music through USB while the screen freezes.
And today i found i can even remote log in using Macbook Air within the LAN.
I can 'ls', 'vim', and 'ls -tnl /var/log'...
I couldn't find anything happened at the time.
and I EVEN tried 'sudo reboot' !! It WORKED for me !!

I think the only three things freeze and crashed is "screen", "mouse", "keyboard"
(I re-plug my mouse usb and insert again, nothing happened...)

For anyone annoyed by this problem, try remote login and sudo reboot to avoid hard reboot, and I hope this could rule out some possibilities when debugging. Thx.

[Frederic Van Espen (frederic-ve)]

For me everything freezes completely. If it freezes while listening to music, it starts skipping as if you're listening to a scratched cd :-)

I'm on debian wheezy. To temporarily work around this issue, I use the 3.6.0 kernel from experimental.

I'm running on a Dell Latitude E6530, with a core i5 cpu and an nvidia NVS5200 which I disable with vgaswitcheroo. The same freeze happens when I don't disable it.

[yannick L (yannick-lorenzat)]

Okay. I downgrade kernel to 3.0.0 (the one of oneiric) and I had no freeze during 15 days on all my machines

[Big Ben (b-hubert)]

Possible stupid fix:

  I had the total freeze problem as well. Yesterday night, the computer froze 7 or 8 times in three hours. Today, I installed gnome 3 and used it for a few hours without problem. I installed the gnome 3 GUI following the procedure given at
 http://www.allili.net/gnu-linux/installer-gnome-3-4-sur-ubuntu-12-04 (in french), i.e.:

sudo add-apt-repository ppa:gnome3-team/gnome3
sudo apt-get update
sudo apt-get install gnome-shell

Then you need to reboot (but you must be used to rebooting by now) and select the gnome GUI at the login screen.

This pseudo-fix is not as radical as installing a previous version of Ubuntu. Too sad for people who like Unity. If on the long run, it appears it really solved the problem (this bug is sometimes surprising), it may indicate the bug is rooted in one of the packages specific of Unity.

I'll fill another comment if the system restarts freezing again.

[rsoika (ralph-soika)]

I am using gnome-shell and I have also the freezes on my new ultrabook with intel-ivy-bridge from the beginning . I don't think the freeze is related to the windows manager. But to me it seems that the freeze depends on whats going on in the GPU.
It is really hard to say what forces the freeze.

[Big Ben (b-hubert)]

Been using LTS12.04 with gnome 3 GUI for a few more hours without a freeze (see #692). The complete freeze bug seems to come from Unity.

[Big Ben (b-hubert)]

I just had a complete freeze a few minutes ago, while using gnome 3. Changing the GUI is thus not the right answer (although it seems it made the problem less severe). Sorry for having given unjustified hope...

[ciriffo (piccoccio)]

Same problem too. complete freeze, and it's not possible to connect by ssh or ping (the pc uses static ip); no tty on ctrl alt f1 etc.. The freeze always had happened while cpu was not working hard, but some (3-10) minutes after modifyng some images (more than 100) by imagemagick. i was moving the mouse and the complete freeze happened. every time it happened psensor was running on the computer. i had a similar problem with another pc running vista (:D). my kernel is 3.2.0-37.
my pc is running a i7 3770, graphics by intel are integrated, and i use a hdmi to dvi cabl. the monitor is LG.

[bloozguy (bloozguy)]

Same problem. System freezes completely. No mouse No keyboard. No SAMBA share.
Can happen while I am browsing or if system is idle (except BOINC) and screen then won't come back up.
Needs hard reboot every time.

UBUNTU 12.04
Gnome (generic)
 Kernel 3.2.0-37-generic
Xorg Version 1.11.3 (17 January 2013 06:14:10AM)

AMD Phenom(tm) II X4 965 Processor

Graphic Card : GeForce GTX 460

[uakf.b (uakf.b)]

I'm getting the same effect, where system freezes, screen is completely blank, keyboard is not responding (for example, num lock key won't toggle or anything), and SSH and ping and any other services don't respond.

Every time it happens it has been during idle time, and usually after several hours of idle. It happens every two to four days, and after that I have to do a hard restart to get it working again.

Running Ubuntu 12.04 (32-bit) with Gnome shell.
Kernel: 3.5.0-23-generic
CPU: i5-3450

[ciriffo (piccoccio)]

i see that the kernel logs and the output of dmesg show this error:

[drm:intel_dsm_platform_mux_info] *ERROR* MUX INFO call failed

drm: registered panic notifier

intel hd 4000 my graphics. i have three pc with ubuntu 12.04. one is working with intel hd 400 sandy bridge, 32 bit. no problem, no issue at all. one is working with ati on 64 bit, and there are no problem. this one, with intel hd 4000, and frequent freezes. Since it is the only one wich use a uefi bios, i wonder if the bug is related with the uefi bios...

[bloozguy (bloozguy)]

Upgraded my Kernel to 3.6.2-030602-generic and the problem is, if anything, worse.
On top of which my Sama server crashes.

[Rabit rabit (o2918474)]

I'm still having these freezes almost everyday. (Complete freeze, no tty no keyboard no ssh, keyboards blinks and after awhile it will reboot itself).

I Can't believe there's still no solution.

[bloozguy (bloozguy)]

At this point I find Ubuntu 12.04 LTS unusable. It usually stays up, at this point, for maybe 2 to 3 hours but will freeze at any time.
I will try a re-install but others have tried that with no success from what I can gather. I agree with Rabit.

[Rabit rabit (o2918474)]

Yes. it got to the point that I'm afraid to run virtualbox or watch youtube or play mp4 or music.
It's ridiculous.

I understand that bug exists and will always exist. Even on windows or mac. But this bug is too critical to be realease as LTS. This is like a beta version.

Now what I want to know is:
- What percentage of ubuntu users and other linux users actually experiencing this bug.
- I'm on 32bit ubuntu, is the 64 bit version any better?
- This doesn' seem happen only on geforce or ati. It also happens on IntelHD graphics. Is this correct. If so then it probably has nothing to do with graphic driver.
- Is it true certain kernel version doesn't have this bug? I read some comment like downgrading to 3.0 version actually fix it? What would be the problem with downgrading to 3.0 kernel?
- Is anyone actually acknowledging this bug and currently fixing it?
- Does it also happen on Mint?

[nuttzo33 (slucas1979)]

Rabit

This bug happens for me on all flavours of linux inc mint,fedora,opensuse,arch

I always run 64 bit flavours but if you are running 32 bit and getting the same bug then i assume it affects both 32 and 64 bit.

I have an nvidia g210 card and it happens on both nouveau and proprietary drivers.

I have never tried running 3.0 or lower kernel because i like to have the latest kernel features and i have to manually compiile my ethernet drivers with a kernel that low.

It's not an ubuntu specific bug but it would be great for someone from ubuntu to try to diagnose the problem as this seems to be a long standing bug which affects a lot of users and prevents me from returning to linux with my current hardware.

I would say it would have to be either a kernel regression bug or some sort of bug with xorg.

[rsoika (ralph-soika)]

In this debian bug report they discuss the problem on another kind of level.
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=689268

For my understanding, the but has to do with the kernel graphics drivers used for Intel Ivy Bridge (perhaps only GPU HD4000?).
I think the problem is well known by some kernel developers. But for a solution it seems we need to wait.
I was not able to understand the discussion in the debian bugreport in all facets. Maybe someone from the ubuntu kernel team can comment this?

[Ivan Kravchenko (iv-kravchenko)]

>> (perhaps only GPU HD4000?)
For intel HD3000 this is bug too.

[nuttzo33 (slucas1979)]

Also i am using an asus p8p67-pro which is sandy bridge based and i am not using intel onboard graphics either.

[Rabit rabit (o2918474)]

@rsoika,
I don't think it is ivy bridge related because my hardware is not ivy bridge.
I'm using older Core2Duo cpu and Geforce 7600GT with older intel chipset. I forgot what it's called but definitely not sandy or ivy bridge. It is a legacy time tested hardware that shouldn't have had bugs problems (in theory).

This bug is so random it's really hard to pinpoint the problem.
The last three days it happened several times a day. But today, actually from last night, I haven't had any freeze at all, almost 24 hours.
This time, I've played all kind of video music and streaming videos such as youtube with no freeze which usually caused to freeze almost definitely. But not today, I don't know why. I didn't do any update at all.

Must be a very very difficult bug to track I think.

[darkkhaine (darkkhaine)]

I also have this bug with ubuntu 12.10 64 bits, mint edition, and an ati r5770. This bug usually happens after a long period of idle, i never had this freeze while doing cpu intensive applications for example. The freeze is a complete lockdown, no mouse or keyboard, and the screen freezes at once, no black screen. Also, when i was listening to music, the music keeps on playing.

[bloozguy (bloozguy)]

MY PROBLEM IS SOLVED: (#697)

 My freezes were complete. No mouse. No keyboard. No activity. No ping. Only way out was a hard boot.
The freezes happened within an hour or two, sometimes less.

 I loaded a fresh copy of the new 12.04.2 I guess the quantal kernel this has "fixed" things.
I have been up and running for at least 12 hours now.

[nuttzo33 (slucas1979)]

bloozguy

12 hours isn't long enough to declare this bug solved, i have gone 4-5 days on one of the 3.8 kernels without a freeze and i thought it was solved but then it happens.

I'd say if you go a couple of weeks without a freeze then maybe it's solved,keep us posted.

[Matt C (proteus400)]

@slucas1979 : I will try Kernel 3.8. Thanks for the tip.

fglrx radeon driver is more stable more often but has it's own issues and crashes. Overall is no better. Back to open source driver.
trying 3.8 kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8-rc7-raring/ as there is mention of benefits for ATI chipset users.

(Mine is: Advanced Micro Devices [AMD] nee ATI RS880 [Radeon HD 4200])

[Matt C (proteus400)]

Woohoo! For 12.04.1 LTS users with constant crash problems as described here and on-board ATI/AMD/Radeon graphics cards, this looks promising: https://wiki.ubuntu.com/Kernel/LTSEnablementStack
If you want the 3.5 kernel and xorg packages from 12.04.2 made available in LTS for 'hardware enablement' purposes run:
 sudo apt-get install linux-generic-lts-quantal xserver-xorg-lts-quantal

Upgrading mine. Will report success here.

[Xiaofei Guo (rex1118membership)]

Problem description: Screen freeze, keyboard and mouse does not respond. Sound card keep replaying the last sound.
The problem happened with me a lot when I used google chrome or chromium to watch videos.

My PC Configuration

Ubuntu 12.04 64 bit
kernel 3.2.0-37-generic
Processor : Intel i7 3.2GHz
Ram : 8GB
Compiz installed. Gnome classic desktop

------

It freezes when I start firefox and google chrome simultaneously.
Also appeared when any development editor like netbeans and rhythmbox running simultaneously

[Xiaofei Guo (rex1118membership)]

Problem description: Screen freeze, keyboard and mouse does not respond. Sound card keep replaying the last sound.
The problem happened with me a lot when I used google chrome or chromium to watch videos.

My PC Configuration

Ubuntu 12.04 64 bit
kernel 3.2.0-37-generic
Processor : Intel Core i7-3520M on MB
Graphics: Intel® HD graphics 4000 and NVIDIA® NVS 5200M 1GB VRAM with Optimus™ Technology
Ram : 8GB
Nvidia graphic card
Compiz installed. Gnome classic desktop

[ciriffo (piccoccio)]

well, for me it looks like there are more bugs which show the same effects or only one bug which is caused by different problems and configurations of hardware. I'm using ubuntu 12.04 on a 64 bit configuration (and ATI/radeon as graphic card) without any problem; on a 32 bit configuration with sandy bridge and Intel® HD graphics 4000 without any problem; and on a 64 bit configuration with Intel® HD graphics 4000 with frequent, daily hard freezes. As i said on #699 kernel logs show some errors about intel drm. I tried this kernel (http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-precise/) and even if it's crazy, it looks like the problem for me it's solved. I've been using it since a week without any problem, and before there were more than one freeze per day.

[Rabit rabit (o2918474)]

@ciriffo

I've tried that kernel 3.4.0 long time ago but I had no luck with it. Same freezing problem. Since than I've tried 3.6.3 and still having same problem.

I'm going to try Matt C #713.
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/993187/comments/713

Has anybody else tried it? Please do report if it works.

[Matt C (proteus400)]

Re. #713 https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/993187/comments/713

I have ran for 24 hours on 12.04.1 with LTS Enablement stack from Quantal installed (with kernel 3.5.0-23-generic and X.Org X Server 1.13.0 / 2:1.13.0-0ubuntu6.1~precise2).

Although the OS and graphics run smoother in 3.5 kernel, I just had a crash. Different message but similar symptoms. Black and white dump screen showing Kernel Bug message followed a few seconds later by corrupt graphics on screen and a need to Emergency Sync + Reboot - although system IS responsive to Num Lock this time, it's not entirely a hard lock but as Ctrl+Alt+F1 doesn't work to get to a console it might as well be.

This time error is:

  Kernel Bug at slub.c Invalid Opcode

At the time I was copying backup data to a removable disk across SSH and working in Unity as normal.

Trying Kernel 3.8 next, as per suggestion from Shayne on comment #673:

https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/993187/comments/673

[Matt C (proteus400)]

I notice that this is filed under package “xserver-xorg-video-intel” yet people report issues on various graphics cards. Mine is AMD chipset with VGA controller Radeon "AMD nee ATI RS880 [Radeon HD 4200].

Will this reduce visibility to those concerned with the radeon driver?

[Matt C (proteus400)]

A 3.8 kernel did not appear to be compatible with 12.04.1... Although it booted to the login screen there was:
  (1) No grub menu, (2) No boot screen just purple, (3) When plugging in a USB keyboard (none connected initially), nothing happens, (4) No network. I had to boot into rescue media and restore the previous Kernel 3.5.

This comment is just in case anyone else having graphics stability problems over the past 1-2 months is following this same path I am, on a quest to restore desktop stability with an AMD/radeon chipset.

I just installed some new bugfixes to the 3.5 kernel from proposed. There are a few radeon bugfixes listed in the changelog. I Fingers crossed.

This may be my last post on this bug, as it has been marked as (yet another) "Won't Fix".

This past 6 months has been very poor for stability of both for my Ubuntu Server and Ubuntu Desktop installations.
Then there is 12.10, which I downgraded immediately to 12.04 upon encountering the Amazon lens, several software crashes and other gems.

I can't get through a single working day without some form of Ubuntu crash. Yet my laptop at home is stable.

I think it's time to review "Won't Fix" policy. Yes, this bug has become a hodge-podge. It is also High + Critical severity and a serious stability issue. I would never close a serious system usability bug like this as "Won't Fix".

I bet many of the 428 users who have marked themselves as affected by this bug would be willing to run whatever diagnostic steps the developers need.

The reason why many posts are so vague could be because this is an unrecoverable random crash, which leaves no logs to post.

[Rabit rabit (o2918474)]

Re. #713
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/993187/comments/713

I did the upgrade, and so far looks good. Installation went smooth. Had to choose Previous version from Grub menu because it default to 3.6.3. and manually choose 3.5.0-23. All went well after the upgrade, vga driver, virtualbox and everything else works fine.

I've thrown a lot of videos and musics and streaming. Ran chrome and Firefox and youtube (which usually causes the freeze) with no freeze at all today all day.

It is too early of course to conclude anything, but I see a glimmer of light at the end of the tunnel.... heheh....
Cross fingers...

[Brian Semrad (bjsemrad)]

I just found this issue, and with latest 12.10 I have this issue, only when using Thunderbird. I have been working on my laptop for 4 hours. In the first two hours I have Thunderbird open and it crashed every 20 minutes (I can't recall if firefox was also open). I shutdown and didn't open thunderbird. I have been working in Chrome testing Amazon Web Services stuff for the last two hours without issue. It appears to be thunderbird causing the problem for me. Anyone else?

[Joe Carey (joecarey)]

Re #713

I tried your fix too, but with no luck. Crashed again several times today.

This time I could make note of the time and find the log entries.

Feb 20 23:39:57 joescomputer dhclient: DHCPREQUEST of 192.168.24.54 on eth0 to 192.168.24.1 port 67
Feb 20 23:39:57 joescomputer dhclient: DHCPACK of 192.168.24.54 from 192.168.24.1
Feb 20 23:39:57 joescomputer dhclient: bound to 192.168.24.54 -- renewal in 1485 seconds.

Then it crashed. I'm new at linux but able to follow instructions... what other information would be helpful?
I've been researching this bug for weeks to no avail.

I've only been using ubuntu since 12.04, and this is the second laptop I've been running it on, but the problem was not there when I first started using it. Just in the last, I dunno, 6 weeks. Halp!

[Rabit rabit (o2918474)]

@Brian Semrad and @Joe Carey, and others who are new here, please read bug description.

This bug is about a *complete system lock-up*. No other TTYs can be started. Mouse doesn't move. Keyboard doesn't react. The only solution is hard reset. This is NOT a compiz problem.

Seems to happen on a variety of configurations, including nVidia, ATI and Intel graphics.

If you are still able to TTY or SSH into other sessions, move the mouse or use the keyboard, file another bug.

If you can still work with your system after crash/freeze or you can see the logs than this is not the same bug we're talking about in this thread.

In my case when it freeze, it is dead completely. No logs, no mouse no keyboards (keyboard lights always blinks and if the sound card was playing something, the sounds will loop). The only solution is to hard reset, or just wait after a while (15-20secs) my system will reboot itself automatically.

And to update Re #713:
After applying the fix, it's been smooth and solid now for me. No problem no freezes. In fact I feel the system seems faster and smoother.
Still, fingers crossed, it has only been a couple of days with no freeze. (Very encouraging considering before the fix, freeze could happen several times a day in random)

[zian974 (zian-cuidet)]

Hello,

the same problem for me.

all starting with a chrome crash then firefox. I tried to restart the browser several times but it always closed. Then complete freeze of PC.
Hard reboot several times, and each time the same symptoms. In addition, after each reboot, full error message but never the same and always freeze after few minutes.

Unfortunately I had reinstalled everything and it no longer a problem for a few days.

Today, the problem reappeared. Firefox and thunderbird crash, attempt to reopen but not full and freeze.

Interestingly, I have a windows 7 VM with virtualbox vm and keeps rebooting every 1-2 minutes since the first freeze.

My configuration:
Asus G75V
ubuntu 4.12 64 bit
RAM: 24 GB
Graphics: NVIDIA GeForce GTX 670m with the proprietary driver

[Manjunath (manjunath-pg)]

I have similar problem on my desktop, my desktop was working fine with earlier version of UBUNTU,

After upgrading to 12.04LTS, facing lot of issues like.
freeze, display will not be proper.
apps are getting crash, system mouse will move and system will not respond locally and remotely.

"I tried changing the VGA and resolution size, still problem remain same."

Please help me.

Following are my configuration.

Linux version 3.2.0-31-generic-pae (buildd@roseapple) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #50-Ubuntu SMP Fri Sep 7 16:39:45 UTC 2012

lsb_release -a; uname -a; lscpu; sudo lshw -C memory
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04.1 LTS
Release: 12.04
Codename: precise
Linux svn 3.2.0-31-generic-pae #50-Ubuntu SMP Fri Sep 7 16:39:45 UTC 2012 i686 i686 i386 GNU/Linux
Architecture: i686
CPU op-mode(s): 32-bit
Byte Order: Little Endian
CPU(s): 1
On-line CPU(s) list: 0
Thread(s) per core: 1
Core(s) per socket: 1
Socket(s): 1
Vendor ID: GenuineIntel
CPU family: 15
Model: 1
Stepping: 2
CPU MHz: 1892.253
BogoMIPS: 3784.50
PCI (sysfs)
  *-firmware
       description: BIOS
       vendor: Phoenix Technologies, LTD
       physical id: 0
       version: R01-B1
       date: 05/23/2003
       size: 128KiB
       capacity: 192KiB
       capabilities: isa pci pnp apm upgrade shadowing cdboot bootselect socketedrom edd int13floppy360 int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer int10video acpi usb agp ls120boot zipboot biosbootspecification netboot
  *-cache:0
       description: L2 cache
       physical id: b
       slot: External Cache
       size: 256KiB
       capacity: 256KiB
       capabilities: synchronous external write-back
  *-cache:1
       description: L2 cache
       physical id: c
       slot: External Cache
       size: 256KiB
       capacity: 256KiB
       capabilities: synchronous external write-back
  *-memory
       description: System Memory
       physical id: 1c
       slot: System board or motherboard
       size: 2GiB
       capacity: 2GiB
     *-bank:0
          description: DIMM SDRAM Synchronous
          product: None
          vendor: None
          physical id: 0
          serial: None
          slot: A0
          size: 1GiB
          width: 64 bits
     *-bank:1
          description: DIMM SDRAM Synchronous
          product: None
          vendor: None
          physical id: 1
          serial: None
          slot: A1
          size: 1GiB
          width: 64 bits
  *-cache:0
       description: L1 cache
       physical id: 0
       size: 8KiB
  *-cache:1
       description: L2 cache
       physical id: 1
       size: 256KiB

[Joe Carey (joecarey)]

@RabitRabit

Mine is a total freeze also, no keyboard, no mouse, no nothing.

[Rabit rabit (o2918474)]

@Joe Carey, sorry about that, I thought you mention you still have the logs so I assume different bugs. Cause this bug doesn't generate logs as far as i know.

And Re: #713 fix,
After several days use my system seems to be more stable, I'm able to play videos with relatively no problems. I think it did freeze only once after playing videos/music.
But, almost everytime I run Virtualbox (after several minutes/hours) it does freeze. Same symptom. So there's improvement, but not fixed yet, the bug still there.

[Big Ben (b-hubert)]

Dear all,

I had the complete freeze bug with my laptop running ubuntu. Tried installing gnome 3 (which I like much) but it did not solve the problem (see previous posts). A few days ago, I installed kernel 3.6.10-030610-generic. The freeze problem seems to have gone for good.

I followed the procedure given at this address:

http://la-vache-libre.org/?s=installer+le+noyau+linux+3.6.10

The commands they give are:

cd /tmp

wget http://dl.dropbox.com/u/47950494/upubuntu.com/linux-kernel-3.6.10 -O linux-kernel-3.6.10

chmod +x linux-kernel-3.6.10

sudo sh linux-kernel-3.6.10

sudo reboot

That's written in french, but the sequence of commands looks rather straightforward. The page first explains how to install the kernel 3.7. Scroll the page down to the section where they talk of 3.6.10 (avoid odd numbers in kernel versions...). Note that the authors nevertheless warn that installing a new kernel can have (bad) consequences and that you'd better make a backup (honestly, I did not and proceeded with the install).
The last sudo command given at the bottom of the page tells you how to remove the kernel 3.6.10 if you're not happy with it:

sudo apt-get purge linux-image-3.6.10*

Note that you may have to re-install some of your drivers (or update some of them). For example, I had to install the appropriate alx driver for my atheros network card.

If after installing the kernel, you have troubles with your Nvidia card, you may (hopefully) solve them with:

cd /usr/src/linux-headers-3.4.4-030404-generic/arch/x86/include
sudo cp -v generated/asm/unistd* ./asm

[rsoika (ralph-soika)]

I have tested kernel version 3.6.10 in the past and this did not solve the problem for me.
I think I have tested most of the versions between 3.0 and 3.8 with no luck :-(
I have a total freeze every two days and I search the internet every day for any hints.

One thing I figured out some days ago was that ater the freeze I can switch-off/on my laptop display with the function key (fn+F9). But this seems to be the only thing which still works - strange....?
My theory is that the freeze depends on the powermanagement and the situaton when the battery is full charged. But I see that also some desktop users have the same freeze so my theory is not relay strong.

[Paul_L (paul-lakra)]

I had the freezing but mouse moving version of the system hang on Ubuntu 12.04 LTS until 8pm last night when I changed the LTS Enablement Stack to Quantal as suggested in this forum. No more freezes since then.

[christian aichert (caichert)]

Hello,

I tried the *713, having had several times freeze an our.

I will report if it works.
If you do not see more comments from me, consider it as an sign of success to use the 713 solution.

Thanks,
Christian

[christian aichert (caichert)]

Hi,

seems to work better my system.
Videos are showm better, before the player often showed only black and I had to move the window to restart the video again.

No frezze since than.

Well, try that fix, maybe it does not fix all, but helps a lot. *713

Woohoo! For 12.04.1 LTS users with constant crash problems as described here and on-board ATI/AMD/Radeon graphics cards, this looks promising: https://wiki.ubuntu.com/Kernel/LTSEnablementStack
If you want the 3.5 kernel and xorg packages from 12.04.2 made available in LTS for 'hardware enablement' purposes run:
 sudo apt-get install linux-generic-lts-quantal xserver-xorg-lts-quantal

Upgrading mine. Will report success here.

[Rabit rabit (o2918474)]

Hi,

Re: fix #713

Almost two weeks after applying the fix from #713. Here's what I find:
Initially things seemed to run ok. It was stable solid and smooth. But those freezes
eventually happened again.

Once it even freezed not long after I restarted the computer, even before running
any applications except probably firefox.

This freezes are very random. Some day I get by without a freeze, but some day I get several freezes in one day.
Before the #713 fix, I got a lot of freeze after playing videos (MP4 or streaming) or MP3s. After #713 it gets better I think. But I still almost always get a freeze after running virtualbox (win7) in ubuntu.

So #713 doesn't fix the problem for me.
This is really frustrating. Considering ditching ubuntu now... Any recommendation what Linux/ubuntu version?

[nuttzo33 (slucas1979)]

Rabit

I had the same thing with using the 3.8 kernels, could go several days without an issue but then had 2 freezes in the space of a couple of hours.

I have had to go back to windows 7 for now but i keep subscribed to this thread in the hope that this bug finally gets resolved but it seems like it will be a while if ever.

As for trying another linux distro i have used a lot of them but keep running into the same issue although i am not sure if i have tried a gentoo based distro or a really old kernel, if you have success can you please let us know.

[Mkchan (mkchan)]

I've also been having daily crashes with no logs, complete freeze, no response to magic keys-REISUB
Im running Ubuntu 12.04 and I have tried the LTS Enablement stack with no success, currently im at kernel version 3.5.0-25

Ive tried various other tricks on this message trail, but no success so far. I definitely want to get this solved!

It seems anytime Im running Unity GUI, I have these problems. Overlapping this fact, is that I usually have VirtualBox running also.
(When I run w/o gui, I get uptimes on the order of days)

But I have similar Ubuntu setups on other machines that doesnt crash with GUI+VirtualBox running.

I do see however a difference in my /var/log/kern.log:

Unstable system:

kernel: [ 0.004000] Fast TSC calibration using PIT
kernel: [ 0.186351] TSC synchronization [CPU#0 -> CPU#1]:
kernel: [ 0.186354] Measured 486003664 cycles TSC warp between CPUs, turning off TSC clock.
kernel: [ 0.012000] Marking TSC unstable due to check_tsc_sync_source failed
kernel: [ 2.962271] vboxdrv: TSC mode is 'asynchronous', kernel timer mode is 'normal'.

Stable system:

kernel: [ 0.000000] Fast TSC calibration using PIT
kernel: [ 2.428496] Refined TSC clocksource calibration: 2693.880 MHz.
kernel: [ 30.011497] vboxdrv: TSC mode is 'synchronous', kernel timer mode is 'normal'.

Ive had the TSC unstable for as long as I can remember from using this system (Intel DX79TO, i7-3930k) Im going to see if fixing this error will solve my crashing problem. However, I do not see much online on how to solve the unstable TSC.

Does anyone else have unstable TSC?

[Imre Gergely (cemc)]

"Me too".

I have an Intel i7-920 desktop machine with Lucid 10.04 64bit on it (kernel 2.6.33 from TRIM), it is pretty much on all day long and used fairly heavily (java, virtualbox, flash, browsers, music, videos, movies). It is not shut down, only suspended (it is connected to an UPS), it has gone even weeks without a reboot.
It randomly freezes, no mouse, no keyboard, no ping. Only a hard reset helps.
The funny thing is, these lock-ups are very very random. Sometimes it locks up when the computer is idling, nobody's at the keyboard, there's no user activity. The frequency of the lock-ups seems random also. No lock-up for a month, or two, then suddenly bam! In the 4 year time it's been up, it locked maybe a dozen times, maybe 20 times.
I changed the VGA card, I changed the PSU, it did not help.

In december I got a Lenovo ThinkPad W530, with Ivy Bridge i7-3720QM, 16GB RAM. It ran Win7 for a month, without issues. A couple of weeks ago I installed Ubuntu 12.04 on it, and started to use it daily (transitioning from the desktop I've described above). Moved stuff to the laptop and I'm working on it as I was on the desktop, doing the same things.

Today... bam! It froze. No mouse, no keyboard, no ping, nothing. Hard reset. Lost a couple of files (had backup). Only the integrated video is enabled in the BIOS, using Gnome Classic with no effects.

I also have another desktop at home, an AMD Phenom X6 1090T, with Lucid 10.04 64bit running on it for years (with 2.6.33 kernel for TRIM), no freezes. Last year upgraded to 12.04 LTS 64bit, not one freeze since then.

I also have another older HP Core2Duo T8300 laptop at work which is pretty much a workstation. I've been using it for years, first with 10.04 64bit, then with 12.04 64bit. It stays plugged in and running for weeks on a docking station, it gets hammered with Virtualbox, Java, browsers etc. and it did NOT freeze once.

All these machines have sort of the same setup, an SSD boot disk some harddisks for storage.

I'm also managing some 50 Lucid 10.04 32bit LTS Server Edition servers installed in different places, all have i3 or i7-2600 CPUs, 4-8GB RAM and are hammered through LTSP from 20-30 terminals (mainly firefox). These servers also are locking up once in a while, at random and not neccesarily when under load. There is no monitor and keyboard attached to them as they are servers, so I don't actually know what's happening, all I know is they need to be reset because they can't be accessed on the network. When I tried to reproduce the problem with one of them, I couldn't. It ran for a week and never froze.

Before the i3/i7 hardware, I had some other older Intel hardware on these 50 machines, with the same 10.04 LTSP install (it's actually an image file that gets installed everywhere), and we did not have random freezes at all.

Oh, almost forgot... I also have another HP server with an Intel Xeon E5404 with 8GB RAM, Ubuntu 10.04 64bit installed a year ago, it's up 24/7, no freezes.

I'm not sure what to make of all this, but it _seems_ that i3/i7 just freezes. That's the only common thing with these. Also the older hardware doesn't seem to freeze, AMD doesn't seem to freeze. Again, the free...

[Rabit rabit (o2918474)]

Imre Gergely,
Not necessarily true about older hardware doesn't seem to freeze.

Mine is Core2Duo with Asus Mainboard and Nvidia Geforce 7600GT. 2GB DDR2 ram. Running fine with Windows 7, but when booted with Ubuntu it's like playing russian roullette.

I was about to try ubuntu 10.04 when I read your comment. sigh.... As I remember it, the older 10.04 doesn't have this problem. But seems like it happens on your systems too.

I have tried the #713 fix (with 3.5.0-24 kernel) initially seems to worked really well for about 1 week, then started to randomly freeze again even up to 3 4 times a day. Now that I think about it, could it be caused by a regular system update that brought back those freezes?

I have yet another system update just yesterday, now it seems to be working well again for two days....
I'm running 3.5.0-25-generic kernel now (if these kernels had anything to do with those freezes at all)

[Manjunath (manjunath-pg)]

After changing monitor. i got all these issue. I think OS is not handling the hardware part.

[Harald Krischner (adon)]

I am using two monitors as other users in this thread do. Can we narrow the cause of all these anoying freezes perhaps to this aspect?

[Imre Gergely (cemc)]

I'm also using two monitors on the Intel i7 desktop that's freezing, AND on the AMD system that's NOT freezing. I'm not using any other monitor on the laptop, that froze once in ~3 weeks.
There are no monitors being used on the 50 servers that crash every now and then.

If we're talking about the complete freeze, without network access, I don't think it's the monitors the problem (IMO).

[rsoika (ralph-soika)]

I think a second monitor increases the probability of freezes. Maybe because of more GPU Memory usage. When I have connected a monitor to my laptop I have more often a freeze. And if I work only with the laptop display I have seemingly no freeze since using kernel version 3.8.2.
I agree with cemc that its not the monitor but more about the memory usage of a system which is different when working with one or more monitors.

[Joe Carey (joecarey)]

No luck here with 3.8.2.
noting in kernel.log sticks out, nor in dmesg, nor syslog. Yet it freezes.

[Daniel Ricao Canelhas (daniel-canelhas)]

Add to affected hardware: Clevo PE-150EM
(sudden, total lockup : no touchpad response, no keyboard response, no response to ping)

12.04.2 LTS x86_64

Reproduced on
Both unity 3D and 2D.
3.2.0-38-generic,
3.2.0-36-generic,

With no devices plugged into USB ports
Single monitor

[nuttzo33 (slucas1979)]

Tried the 3.9 kernel and raring a couple of days ago and was good for a day but then the computer wouldn't revive after being locked so i assumed that it must have full freezed whilst the monitor was sleeping.

I think i might have to wait till ubuntu switches to mir and maybe then this issue will be resolved but until that happens windows is gonna have to stay.

[jaohsbapuabsd (jaohsbapuabsd-deactivatedaccount)]

FYI: I realise that this bug has been marked as 'Won't Fix', but providing what details I can in case this is looked into again (with 12.04 being LTS and the release likely to be adopted by enterprise customers requiring paid support).

Experiencing sporadic full system freeze/crash - approximately 2-4 times weekly. No mouse or trackpad response (no cursor movement), no keyboard response. System will not halt as normal when closing the laptop lid. Recovery requires hard shutdown/reboot.

Linux Mint 14 and Ubuntu Studio (Xubuntu) run on the same laptop (multiboot) without this bug occurring. Haven't experienced the same bug running Raring live from USB.

Attempting this fix:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/993187/comments/713
Will update with result.

Current system details for reference:
Ubuntu 12.04
Kernel: 3.2.0-38-generic (#61-Ubuntu SMP Tue Feb 19 12:18:21 UTC 2013)
GCC: 4.6 (x86_64-linux-gnu)
Xorg: 1.11.3 (27 February 2013 02:07:42AM) (27 February 2013 02:07:42AM)

Laptop is Toshiba Satellite P850-321

CPU INFORMATION
GenuineIntel, Intel(R) Core(TM) i5-3210M CPU @ 2.50GHz
Number of CPUs: 4
CPU clock currently at 1200.000 MHz with 3072 KB cache
Numbering: family(6) model(58) stepping(9)
Bogomips: 4988.64
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms

MEMORY INFORMATION
Total memory: 7876 MB
Total swap: 6929 MB

STORAGE
SCSI device - scsi0 // ATA // TOSHIBA MQ01ABD0
SCSI device - scsi2 // MATSHITA // DVD-RAM UJ8C0

HARDWARE
Host: Intel Corporation Ivy Bridge DRAM Controller (rev 09)
Graphics: Intel Corporation Ivy Bridge Graphics Controller (rev 09) (prog-if 00 [VGA controller])
Sound: Intel Corporation Panther Point High Definition Audio Controller (rev 04)
Network: Intel Corporation Centrino Wireless-N 2230 (rev c4)
Ethernet: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 05)

[Joe Carey (joecarey)]

A google search for ubuntu 12.04 freezes frequently produces "About 792,000 results (0.16 seconds) ".

I opened a bug report at https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1154006.

If you have the exact same symptoms as I do, and have also attempted to debug it as I have, consider adding yourself to that bug report.

If however, you are able to do anything with the keyboard or mouse, or if the screen continues to update, then it is clearly not the same issue, so please in that case do not add yourself.

I'm sure some of the 440 odd people who are on this thread have bad hardware, but is it really possible that we all do?

[nuttzo33 (slucas1979)]

joecarey

There are probably a fair amount of people who also get this bug happen while the computer is in sleep mode and think the problem is a wake from suspend bug when in fact the computer has had a full freeze.

I'm sure that if someone from canonical or someone with knowledge could debug the issue it can get fixed but at this stage i will have to wait till next year and see if ubuntu switching from x to mir solves the issue.

I won't be able to do much now as i am refusing to put linux on my computer now as previous installs of many distros has not been successful but i will stay subscribed to this in the hope that it one day gets fixed.

[Benjamin Flesch (bflesch)]

I have the same Thinkpad as #737 and I am experiencing this freeze on 12.10 with Linux ubuntu 3.2.0-33-generic x86_64..

[Joe Carey (joecarey)]

@shayne lucas

I also thought it was a suspend/wake bug at first.

[abrianb (abrianb2003)]

I was affected by this bug. In mid January I Installed PSensor on my Laptop . I found very high temp spikes before the fan would increase speed. The graphing mode of PSensor helped me see this. I installed thinkfan, and set up the parameters to start the fan at low temps (2900 rpm at 48c and full fan by 54c) . I have not had a single crash since. I have to conclude that these crashes were from a fan profile change that came with 12.04 and continued with 12.10.

[Manjunath (manjunath-pg)]

I dont think it is a monitor or display issue,

Even UBUNUT 12.10 have same problems.

And 12.10 have different issues on vmware esxi server. with GUI os is not booting.

[Harald Krischner (adon)]

Whatever the actual reason is: For me the problem vanished since I disconnected the additional monitor (I had 1-2 freezes per day, not one in a week with just 1 monitor).

If there is any hint how I can improve my bug report data on this odd issue I'd be glad, since the log files do not to help, nor there is something different to point at.

[Bertilo (bertilow)]

I just had major data loss due to the computer freezing up because of this bug. A whole git repository was hopelessly damaged. It contains major work data. I don't know what I can restore since the last backup. Maybe some of it.

I want to extend my thanks to the developers that marked this bug as WONTFIX.

[Joe Carey (joecarey)]

Judging from the thread, it's marked as won't fix because it is not a single bug we're all complaining about, but a complex interaction of several bugs. Many people are complaining about completely different symptoms, all with a freeze, but even the character of the freeze is different from case to case. I have marked this bug as not affecting me and filed a bug report detailing my exact symptoms. Might be time for others to do the same.

[nuttzo33 (slucas1979)]

Can other people affected by this bug try adrianb suggestion, a temperature spike could lead to a full freeze.I don't have ubuntu on my pc anymore so i can't try it.

[nuttzo33 (slucas1979)]

sorry i meant abrianb comment #751

[Manjunath (manjunath-pg)]

I have disabled gui to check the performance, issue remains same.

After disabling gui i got kernel error. unable to transfer files by using scp .

os is keep giving kernek errors.

unable to transfer file, it is going to hang state.

Multiple problems. and successfully copied data will have issue.

[Mercer Rivière (vincentuq)]

After the below example, it's dead. It always concerns IRQ's.

 name [ 1377.796013] NVRM: GPU at 0000:01:00.0 has fallen off the bus.
 name [ 1377.796088] NVRM: GPU at 0000:01:00.0 has fallen off the bus.
 name [ 1377.796013] NVRM: os_pci_init_handle: invalid context!
 name last message repeated 4 times
 name [ 1380.200095] irq 16: nobody cared (try booting with the "irqpo
ll" option)
 name [ 1380.200102] Pid: 3019, comm: mplayer Tainted: P O 3
.2.0-35-generic #55-Ubuntu
 name [ 1380.200105] Call Trace:
 name [ 1380.200113] [<c1560f2c>] ? printk+0x2d/0x2f
 name [ 1380.200119] [<c10b1259>] __report_bad_irq+0x29/0xd0
 name [ 1380.200123] [<c10b14b4>] note_interrupt+0x104/0x150
 name [ 1380.200127] [<c10af38f>] handle_irq_event_percpu+0x9f/0x1f0
 name [ 1380.200132] [<c1027518>] ? default_spin_lock_flags+0x8/0x10
 name [ 1380.200136] [<c157614d>] ? _raw_spin_lock_irqsave+0x2d/0x40
 name [ 1380.200140] [<c1027518>] ? default_spin_lock_flags+0x8/0x10
 name [ 1380.200144] [<c101e56d>] ? __io_apic_modify_irq+0x7d/0x90
 name [ 1380.200148] [<c10af51b>] handle_irq_event+0x3b/0x60
 name [ 1380.200152] [<c10b1cc0>] ? unmask_irq+0x30/0x30
 name [ 1380.200156] [<c10b1d0e>] handle_fasteoi_irq+0x4e/0xd0
 name [ 1380.200158] <IRQ> [<c157d832>] ? do_IRQ+0x42/0xc0
 name [ 1380.200165] [<c157d770>] ? common_interrupt+0x30/0x38
 name [ 1380.200169] [<c1570000>] ? add_i2c_device+0x126/0x166
 name [ 1380.200172] handlers:
 name [ 1380.200281] [<f9833050>] nv_kern_isr
 name [ 1380.200284] Disabling IRQ #16

[Mercer Rivière (vincentuq)]

I will add: not always it seems to be caused by nvidia. But always concerns irq's. Most certainly a flawed driver.

[Timo Aaltonen (tjaalton)]

Install the 12.04.2 kernel/xorg backport stack ('xserver-xorg-lts-quantal' and it's depends/recommends) to get rid of most of the issues on ivybridge and/or earlier intel.. closing as fixed.

And for the last time: for non-intel gfx users, this never was the bug for you. Check you hardware or blob driver version, then file a new bug and leave this 'forum' alone.

[Imre Gergely (cemc)]

@tjaalton: Is there also a workaround/fix that one can try for Lucid?

[nuttzo33 (slucas1979)]

@joecarey

are you using nouveau or an nvidia based graphics card? If so then perhaps people with non integrated intel graphics can use your new bug report seeing as how this one has become an intel onboard only bug?

If not then is someone with nvidia graphics able to start a new one?

[Ted Jordan (z-ted-q)]

Workaround that worked for me was to remove gnome-desktop and replace it with kde-desktop

It's a little different to work with, but my system no longer locks

Ted

[Linus van Geuns (nirkus)]

I am using 12.04 x86_64 and since a few days, my Ubuntu informs me about "problems", which seem to relate to xserver-xorg-video-intel-lts-quantal.
Sometimes, the whole computer (GUI hangs, no reaction on mouse/keyboard, can't switch to the terminal) hangs for several seconds. A few minutes ago, the machine completely froze and needed a hard reset.

May this be the same issue or is it a new one with the lts-quantal backport?
What info do you need?

[Joe Carey (joecarey)]

What we really need is to stop adding to this bug report. If you still have a bug, it is a different bug from this bug. If you are still experiencing freezes, file a bug report apart from this one, and include the files they ask for (I was new and didn't do this at first but there is a helpful reminder generated by a bot on how to use apport to collect this info and update your bug report very easily via the command line).

[Felix (apoapo)]

OK, i know, this bug should be stopped posting to but i could kind of workaround it:

A PC i am responsible for was crashing with 12.04 and 12.10 every hour nearly. What solved it for me:

1) Updated to raring ringtail (upcoming 13.04), kernel 3.8.x. (Why is raring THAT stable right now? It works really well here! But pls keep in mind its pre-beta. Though with this crashes here, you should be good to go for an upgrade ;-) )
2) Updated firmware on the harddrive (a SSD in my case)
3) flashed new bios (ASROCK mini itx mainboard h61m-itx)

In case you follow the steps, choose 3) 2) 1), cause updating the frmware on the SSD might erase your data.

It was a "rage-upgrade" (PC was close to forced death), i did not have the patience to update one-by-one to see what was the reason.

Good luck everyone, the Linux here is now rock solid again!

[Linus van Geuns (nirkus)]

Well, in the meantime I did create a new bug report for the freezes with xserver-xorg-video-intel-lts-quantal and Intel Sandy Bridge on Ubuntu 12.04:
#1161088

I did re-use this bug as those Sandy Bridge i915 drm hangs & system freezes do feel pretty similar to this bug and there was just about the same bug on Ubuntu 11.10...

[T.R. (tapio-ryhanen)]

Hi Everyone,

I'm still having this issue (2012-12-21 comment 609). Very annoying! Freezes seem to be completely random, at the best my laptop has been running fine longer than month, but for example during the past two weeks, maybe ten freezes.

Yes, mouse not moving, keyboard not responding, no ssh, Ctrl+Alt+F1 not working, no tty.. Closing lid does not suspend. The only option is to power off the computer from the power button and start over.

The same laptop also has W7 and RHEL6 installed, they run without problems..

Ubuntu 12.04.2 LTS with the latest updates. Please, see the lspci-info attached for the details. No proprietary drivers, Intel Ivy Bridge.

The bug #1154006 similar.. Fix appreciated, please.....!

Ubuntu 12.04.2 LTS
Intel® Core™ i7-3520M CPU @ 2.90GHz × 4
16GB memory
Lenovo X230

Hardware details/lspci-info attached..

[christian aichert (caichert)]

People...

I am tired of all this 12.04 problems...
It freezes all times long.
My PC is working very slowly.
I tried for weeks to solve the prolem.

At least I thought maybe better with Windos...

I remembered how great the performance was with Ubuntu 10.04...and than I simply installed
it again...

kicking out this stily looking but very unpractible 12.04 with such a kind of problems that I think ubuntu should kick it out and go back to 10.04...

Now I am writing this with my system running well, fast, all grafik aplications work well and with NO FREEZE absolutly...!!

People :

GO BACK TO UBUNTU 10.04 and save a lot of time in bug findings and commandline.sreaching...

Have FUN!

[Frank Schilder (f-schilder)]

I think this bug is assigned to the wrong package. It is very likely a kernel problem. On my hardware, the kernel actually detects the lock. I posted extracts from the syslog file recovered after a hard reset in the following two posts to another thread on the same problem: <a href="https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1154006/comments/42">1154006#42</a> and <a href="https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1154006/comments/46">1154006#46</a>. The lines to look for are

Apr 10 18:58:51 ceylon kernel: [ 2412.456005] ioatdma 0000:00:08.0: reset
Apr 10 18:58:52 ceylon kernel: [ 2412.603756] BUG: soft lockup - CPU#3 stuck for 22s! [svn:5127]

in #42 and

Apr 14 13:16:12 ceylon kernel: [18557.572005] ioatdma 0000:00:08.0: reset
Apr 14 13:16:12 ceylon kernel: [18557.772001] INFO: rcu_sched detected stall on CPU 1 (t=15000 jiffies)
Apr 14 13:16:12 ceylon kernel: [18557.772002] sending NMI to all CPUs:

in #46. I just went back to 10.04, the instability of 12.04 is just ridiculous. I hope that a kernel developer is following this discussion and might find a hint in the syslog extracts I posted under the other number.

[peter yuen (requirement)]

I have the same issue, .. mouse, keyboard,.. nothing can move.. the only solution is hard reboot. This issue happens a couple of times a day....

[Joe Carey (joecarey)]

If you have this bug, you are in luck, just updating your kernel to 3.4 will fix it. If that doesn't work, then you do not have this bug. You have something else. See if your symptoms or situation match this bug:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1154006

[Jurgen Lambrecht (jurgen-lambrecht2-deactivatedaccount)]

I want to confirm the bug for LMDE (Linux Mint Debian Edition) running a 3.2.0-4-amd64 kernel.
- Also complete freeze, even no tty; at least once a day, sometimes 4 times a day.
- Workaround: do not start Firefox with a video in a tab waiting to be viewed in a spare moment
- Solution: kernel upgrade. To 3.8.8 in my case.

[Alexey-Sandy (alexeysandy)]

<email address hidden>

[Robert Hrovat (robi-hipnos)]

Few weeks ago we moved from 10.04 to 12.04 at work. Mostly because of newer machines had problems with older kernels (no SATA, no sound). I have to admit that 10.04 was light years away from 12.04 when it comes to stability. There was mean time between crashes measured in weeks, when 12.04 can have 10 crashes in one hour. It's really disappointing. Right now I'm upgrading kernel to 3.2.0-41 and hoping it will fix freezes and crashes before coleagues at work crucifies me.

Will report after few days if that helped. If not, I have no clue what will I do since I'm running out of options. So if anyone can help me pointing in right direction or what can I do to help developers find and kill this annoying bug, I'm here.

Oh and those 60 machines at work are all from DELL, models Optiplex 380SFF, 390 SFF and 1030SFF. Just what's built in, with Intel graphics and all runing on Gnome Classic - no Unity. All machines are connected to network and has mounted Samba and NFS shares, each one of 100 users uses mostly Firefox, Thunderbird, LibreOffice, Audacity, VLC and some custom developed software.

Ironicaly Ubuntu HCL lists those machines as compatible when clearly they far from that.

[Rabit rabit (o2918474)]

So after 3 months I'm back here to check what's up with this bug. I have been using Windows in the meantime.
Seems like not much going on here. No solution yet?

Ok someone suggessted kernel 3.8.8 which I haven't tried. But since I've tried all kernel 3.2.x up to 3.6.x, I'm a bit reluctant to try 3.8.8. Can someone else confirm this kernel version fixes this bug?

[Joe Carey (joecarey)]

If updating to a later kernel doesn't work, then this isn't your bug. Please file your own bug report.

[irgendwer (holop)]

I've updated to the 12.04 LTS
The system crashes usually by using of gimp.
You can move the mous, but nothing to click.
You can login to the console and use the system and restart the pc.

HW:
Geforce 6100PM-M2
AMD Athlon 64x2Dual Core Proc 5000+
1024 M OK with 128 k shared Mem
CPU: Simple Chan. 64bit,2T
Ubuntu 12.04 LTS
(GNU/Linux 3.2.0-38-generic-pae-I686

Please help, or I have to downgrade back to 10.04

[Joe Carey (joecarey)]

This bug is already fixed, if you still have a problem, file a new bug report.

[T.R. (tapio-ryhanen)]

Hi everyone,

I think this bug is not solved on 12.04 LTS. If it's a kernel bug, the patch should be backported to the latest official 12.04 kernel and delivered via normal software update.

Some people suggested for example to update to kernel v. 3.3.6 available here: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.3.6-precise . That kernel is more than one year old and does not contain many important security fixes. If start using something like this, maybe should update to the latest kernel from kernel.org and compile it. I think most of the users don't want to do that.

I run many computers with 12.04 without problems, but I have fatal and occasional freezes only with my newest Intel Ivy Birdge laptop. (see #774)

Hoping for the fix, please. Thanks.

[Robert Hrovat (robi-hipnos)]

So much about LTS. Can anyone confirm this will ever be fixed or should we just abandon Linux since this is total showstopper in my company and I ran out of options and excuses :(

[Mkchan (mkchan)]

I was only able to stop my kernel freezes by using the kernel option of: processor.max_cstates=1
I filed a new bug for this at:
  https://bugs.launchpad.net/bugs/1159065
which is still open.

[Hyuristyle (hyuristyle)]

Exactly the same problem here. System freezes completely; no mouse, keyboard, audio; nothing.
Systems:
Lubuntu 12.10
Ubuntu 12.10

Processor: Intel Pentium 4, 3.0 Ghz, Single Core with 2 Threadings.
Graphics card: Off board; ATI Radeon 9600
Hard disk: HDD Maxtor 6G160E0 (KA101V00), 160 GB
RAM: 1 GB

"lspci" output, if helps:
http://paste.ubuntu.com/5885000/

I am not sure, but i had a freeze another day on Windows XP that was very similar to these on Lubuntu and Ubuntu, but happened only one time contrary to Lubuntu and Ubuntu that happens all the time i am using Blender or watching a video.

[Andrew Voumard (andrewv)]

Hi,

I also had the problem where my kubuntu 12.04 install was completely hardware freezing - i.e absolutely no response from any input device and in particular CTRL+ALT+SysRq REISUB was not responding at all either.

I found the problem was happening close to when I was switching the external monitor on & off (I switch it via a KVM switch).

Note that I use x11vnc to remotely connect to the same desktop, and I think that may have helped trigger the fault.

I updated ALL installed software, but to no avail, it was happening 3 or 4 times a day ...

*** THE FOLLOWING FIX WORKED FOR ME -been ROCK SOLID for a week now ***

I installed the following kernel upgrade described here:

http://askubuntu.com/questions/142192/can-i-install-linux-kernel-3-4-in-ubuntu-and-kubuntu-12-04

So I downloaded from:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-precise/

And did:
sudo dpkg -i linux-headers-3.4.0-030400_3.4.0-030400.201205210521_all.deb
sudo dpkg -i linux-headers-3.4.0-030400-generic_3.4.0-030400.201205210521_i386.deb
sudo dpkg -i linux-image-3.4.0-030400-generic_3.4.0-030400.201205210521_i386.deb

Rebooted, and the problem completely disappeared (so far anyway !)

My machine specs:

uname -r
3.4.0-030400-generic

MOBO: ASUS P8Z77-V-LX

I am using the onboard video, with nothing but the default kubuntu video installation.

lshw output follows:

bridge2
    description: Computer
    width: 64 bits
    capabilities: vsyscall32
  *-core
       description: Motherboard
       physical id: 0
     *-memory
          description: System memory
          physical id: 0
          size: 31GiB
     *-cpu
          product: Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz
          vendor: Intel Corp.
          physical id: 1
          bus info: cpu@0
          size: 1600MHz
          capacity: 1600MHz
          width: 64 bits
          capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp x86-64 constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms cpufreq
     *-pci
          description: Host bridge
          product: Ivy Bridge DRAM Controller
          vendor: Intel Corporation
          physical id: 100
          bus info: pci@0000:00:00.0
          version: 09
          width: 32 bits
          clock: 33MHz
          configuration: driver=agpgart-intel
          resources: irq:0
        *-pci:0
             description: PCI bridge
             product: Ivy Bridge PCI Express Root Port
             vendor: Intel Corporation
             physical id: 1
             bus info: pci@0000:00:01.0
             version: 09
             width: 32 bits
             clock: 33MHz
             capabilities: pci normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:42
        *-display
             description: VGA compatible controller
   ...

[Adrian Sarmas (adrian-sarmas)]

I was able to stop system freezing by choosing 3.2.0-48-generic-pae on boot instead of the latest version. Try older kernel versions.

[Eduardo (ngc6720)]

476 users and still no attention from the developers. 8 MONTHS after the release of Ubuntu 12.04 and still having whole system freezes on a daily basis. In two fully different computers, with the i386 and amd64 versions of Ubuntu 12.04.

Users that turn their computers off after a several hours session will almost never notice the freezes. It is us users who want to leave our computers running for more than one day, who are suffering this problem. The average running time before a whole system freeze is about 10 hours, though sometimes it may happen in much shorter/longer time. Please somebody explain me that, or I will start elaborating conspirational theories, because it really FEELS as there is a hidden timer in the kernel, with an random average pre-set running time around ten hours.

Is this part of some fight against P2P piracy? My teenage eMule times are far beyond, and I don't much know about how the corresponding programs work today, but I badly need to run numerical simulations at home, and some of them take about 3 days. Most times they are ruined by these freezes. I already have changed the distro to an older Fedora in one of the computers, so that my simulations run fine there. But my laptop still has (K)ubuntu 12.04. I am still waiting, hoping and apt-get updating, for months now. But I am getting tired. I may give up soon and say goodbye to a long, personal tradition of confidence on Ubuntu. I am getting sick of waking up in the morning, going to the computer and seeing that it has frozen again during the night.

[Linus van Geuns (nirkus)]

Did switch to Debian wheezy (7.x) several month ago and never had to deal with any system freezes since then.

[rsoika (ralph-soika)]

I also switch to Debian 7. But I had still freezes.
Now that I am running kernel version 3.12.0 it seems that my system becomes stable. I saw 'only' one freeze in 14 days.
After all (I am affected from this problem still 10 month!) I guess that the problem is issued by the wifi. But I did not know how to test or verify this.

[trallallero (trallallerotrallalla)]

I can confirm that it's caused by compiz not unity.
I have removed unity and activated the compiz application switcher as alt+tab on precise doesn't work.
Often, when I press alt-tab to switch application, ubuntu freezes and I cannot even use ctrl+alt+f1
It even happened with alt-f4 to close a window.
Now I understand why alt+tab has been disabled on precise.

[Joe Carey (joecarey)]

Maybe y'all have failing hardware.

[sri4985 (sri4985)]

I am also facing the same problem.

Suddenly at any time it can freezes.
I am unable to handle the mouse, keyboard and other devices.
Display also just freezing.
CPU led indicator also not blinking.

Some time booting also failed.

Please help me.

always i am keeping my system as upto-date. but still i am getting the same issue.

My system info :

Processor : Intel Core i3-3210 @3.20GHz
Mother Board : Intel DH61BF
RAM : 8GB DDR3
Hard Drive : Seagate 500GB SATA

Operating System : Ubuntu 12.04.3 LTS
Kernel : Linux 3.2.0-56-generic (x86-64)
Desktop Environment : XFCE 4

Please help me.......

[Paulo Andres Jara Santibanez (paulojarasantibanez)]

using the series 3.2.0-xx of kernel on my Ubuntu 12.04.03 the system just get stuck at ubuntu's dots screen every 4 or 5 boot, nothing works, not even keyboard just it is posible turn off by a hard reset.

My system also uses :compiz-fusion- 0.9.7.0~bzr9-0 transitional dummy package.
                                       :compiz 1:0.9.7.12-0ub OpenGL window and compositing manager

After upgrade the kernel to 3.5.0-37-generic #58~precise1-Ubuntu SMP Wed Jul 10 17:48:11 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux,
all things was going better...
from this upgrade, system run well and don't stuck at boot or hangs.

all machine specs:

    descripción: Computer
    anchura: 64 bits
    capacidades: vsyscall32
  *-core
       descripción: Motherboard
       id físico: 0
     *-memory
          descripción: Memoria de sistema
          id físico: 0
          tamaño: 7881MiB
     *-cpu
          producto: Intel(R) Core(TM) i3-2328M CPU @ 2.20GHz
          fabricante: Intel Corp.
          id físico: 1
          información del bus: cpu@0
          tamaño: 800MHz
          capacidad: 800MHz
          anchura: 64 bits
          capacidades: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp x86-64 constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer xsave avx lahf_lm arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid cpufreq
     *-pci
          descripción: Host bridge
          producto: 2nd Generation Core Processor Family DRAM Controller
          fabricante: Intel Corporation
          id físico: 100
          información del bus: pci@0000:00:00.0
          versión: 09
          anchura: 32 bits
          reloj: 33MHz
        *-display
             descripción: VGA compatible controller
             producto: 2nd Generation Core Processor Family Integrated Graphics Controller
             fabricante: Intel Corporation
             id físico: 2
             información del bus: pci@0000:00:02.0
             versión: 09
             anchura: 64 bits
             reloj: 33MHz
             capacidades: vga_controller bus_master cap_list rom
             configuración: driver=i915 latency=0
             recursos: irq:43 memoria:52000000-523fffff memoria:40000000-4fffffff ioport:4000(size=64)
        *-communication
             descripción: Communication controller
             producto: 7 Series/C210 Series Chipset Family MEI Controller #1
             fabricante: Intel Corporation
             id físico: 16
             información del bus: pci@0000:00:16.0
             versión: 04
             anchura: 64 bits
             reloj: 33MHz
             capacidades: bus_master cap_list
             configuración: driver=mei latency=0
             recursos: irq:44 memoria:52604000-5260400f
        *-usb:0
             descripción: USB controller
             producto: 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2
             fabricante: Intel Corpora...

[Alex Burdu (alex.burdu)]

I have been facing this problem for a long time now and it still doesn't seem to get fixed. To me it happens most often on multimonitor using HDMI, but also with a single monitor or multimonitor using VGA.

Using a Dell Studio XPS 1340 laptop with:
Ubuntu 12.04
Kernel: Linux 3.2.0-57-generic x86_64 GNU/Linux
CPU: Intel(R) Core(TM)2 Duo CPU P8700 @ 2.53GHz
GPU - NVIDIA SLI:
nvidia-smi -L
GPU 0: GeForce G210M (UUID: GPU-1b0674e3-9c44-6152-8b35-14ac258e89df)
GPU 1: GeForce 9400M G (UUID: GPU-0c72438f-4b81-5d92-cf00-974a003c6fc5)
Driver Version: NVIDIA-Linux-x86_64-331.20 - dowloaded from NVIDIA site, but getting the same problem with the ones in the Ubuntu repository

I've been losing a lot of time trying to fix it by reinstalling NVIDIA drivers. It caused me to lose a lot of work by freezing my computer randomly.

[Antonio Falk (zvacketz)]

I have also been facing this problem for a long time. It began with 12.04LTS as I remember. Previously the system was stable as a rock running 10.04 LTS.

Tried to re-install the OS from scratch, but still facing the problem. Changed Video card, main board. Swapping RAM tried different graphics drivers, different available kernels but there is still random freezing. Could not effort to change the $1000 CPU...

To me it happens most often when kicking on a link in Thunderbird to be opened in Firefox. Complete freeze, but the mice some times still moves around. No response from keyboard at all (numloc and capsloc LEDs does not change). Some times the system freeze when running in idle, and I discover this at logon screen. Normal uptime is about two three days between forced HW reboots.

The strange about this bug is, that my kids runs a PC Intel Core i7-3770 3,4GHz Asrock/Gigabyte B75-Chipset mATX without facing any problem at all. I'm also user on the PC, running Gnome classic and compiz. I never log out, just switch user. It only reboots when applying new packages that requires a reboot, els its always running stable.

Current configuration facing this problem:

uptime 12:57:54 up 1 day, 2:22

Gnome Classic + Compiz
Linux-x86_64
Intel(R) Core(TM) i7-3960X CPU @ 3.30GHz
Kernel 3.8.0-34-generic
NVIDIA GTX760 Driver Version: 319.32
/dev/sda Samsung SSD 840
16 GB Main Memory
MB Rampage IV Extreme

[rsoika (ralph-soika)]

I am also facing the same issue.
But since I am running kernel version 3.12.x the system is very stable. Freezes only once in a week with 3.12.5 (before I had freezes 1-3 times a day)
I am not sure if it is the kernel version. As I am now working with Debian Jessie I also got a lot of updates from firmware to wifi driver. I am still thinking about if the issue could be related to the wlan area/power management....?

[Derek Gentle (p-derek)]

I am also having an issue where my system completely locks up. Mouse / keyboard are unresponsive and I am unable to ssh in from another system.

This is a new build with all new hardware:

ASUS H81I-PLUS Socket 1150 w/ Intel H81 Chipset
Intel Pentium G3220 Dual-Core Processor @ 3.0 GHz
Team Vulcan 8GB (2 x 4GB) 240-Pin DDR3 1600 (under clocked to 1333 by the BIOS)
Intel 330 Series 60GB SSD
on-board Intel graphics connected via HDMI to a 24" Samsung LCD TV

I was originally running openSuSE 13.3 w/KDE, but as this system is meant to be a multimedia system, it was causing more trouble that I wanted to deal with. I do not recall it freezing at any time.
I then installed Kubuntu 13.10 64bit as the multimedia support is better than SuSE. This is when I started to get multiple lock ups. I thought maybe it was due to something not being happy with 13.10, so I installed 12.04.3 LTS w/ KDE 4.12. I also removed the 8GB 'Team' memory and installed a single 4GB ADATA 1333MHz DIMM.
This appeared to have resolved the issue, but it locked up on me three times yesterday. Once while using Amarok (remote mySQL database & collection on a FreeNAS NFS share), once while just using the desktop and another while attempting to play an 800MB .MKV file in XBMC standalone (remote mySQL, file located on a FreeNAS NFS share).
I've checked the various logs, and there does not appear to be anything of any relevance as nothing 'crashes' exactly, the entire system just locks.

I've disabled all power management features & functions.
No wi-fi hardware installed / enabled.
Cat 6 gigabit network connection.
Microsoft Sculpt bluetooth keyboard w/ ASUS bluetooth dongle
- paired with bluemon
Microsoft ARC wireless mouse w/ MS wireless dongle

[Paulo Andres Jara Santibanez (paulojarasantibanez)]

Now using kernel 3.5.0-44-generic #67~precise1-Ubuntu SMP Wed Nov 13 16:16:57 on my system HP-1000 1323la
LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch
Distributor ID: Ubuntu
Description: Ubuntu 12.04.3 LTS
Release: 12.04
Codename: precise

all goes really good , no hung or stucks at all

more detailed specs of my machine :

    descripción: Computer
    anchura: 64 bits
    capacidades: vsyscall32
  *-core
       descripción: Motherboard
       id físico: 0
     *-memory
          descripción: Memoria de sistema
          id físico: 0
          tamaño: 7881MiB
     *-cpu
          producto: Intel(R) Core(TM) i3-2328M CPU @ 2.20GHz
          fabricante: Intel Corp.
          id físico: 1
          información del bus: cpu@0
          tamaño: 800MHz
          capacidad: 800MHz
          anchura: 64 bits
          capacidades: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp x86-64 constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer xsave avx lahf_lm arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid cpufreq
     *-pci
          descripción: Host bridge
          producto: 2nd Generation Core Processor Family DRAM Controller
          fabricante: Intel Corporation
          id físico: 100
          información del bus: pci@0000:00:00.0
          versión: 09
          anchura: 32 bits
          reloj: 33MHz
        *-display
             descripción: VGA compatible controller
             producto: 2nd Generation Core Processor Family Integrated Graphics Controller
             fabricante: Intel Corporation
             id físico: 2
             información del bus: pci@0000:00:02.0
             versión: 09
             anchura: 64 bits
             reloj: 33MHz
             capacidades: vga_controller bus_master cap_list rom
             configuración: driver=i915 latency=0
             recursos: irq:42 memoria:52000000-523fffff memoria:40000000-4fffffff ioport:4000(size=64)
        *-communication
             descripción: Communication controller
             producto: 7 Series/C210 Series Chipset Family MEI Controller #1
             fabricante: Intel Corporation
             id físico: 16
             información del bus: pci@0000:00:16.0
             versión: 04
             anchura: 64 bits
             reloj: 33MHz
             capacidades: bus_master cap_list
             configuración: driver=mei latency=0
             recursos: irq:44 memoria:52604000-5260400f
        *-usb:0
             descripción: USB controller
             producto: 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2
             fabricante: Intel Corporation
             id físico: 1a
             información del bus: pci@0000:00:1a.0
             versión: 04
             anchura: 32 bits
             reloj: 33MHz
             capacidades: ehci bus_mas...

[VaidhyM (vaidhyanathan-m)]

I am running Ubuntu 12.04 LTS. I am facing the full freeze issues too. So much that its froze for 12 times in 2 hours. Hard Reboot is the only way to revive the system. The configuration is,

Intel Core i7 2630QM @ 2.00 GHz
4 GB RAM (2x2) + 2 GB Swap
nVidia GT 540M

During freezes trackpad doesn't work. Some have upgraded kernel from 3.2 to 3.4 and have solved their issues. I am running kernel 3.8 and still facing issues. The Xorg display drivers seemed to create problems so running Additional Drivers for nVidia recommended by Ubuntu. Any views on how to proceed further? Strangest thing is never once a bug report was generated after hard reset of the laptop. Any help is appreciated. Thanks!

[Antonio Falk (zvacketz)]

Hi,

I was running different Nvidia graphic cards with different proprietary
Nvidia drivers (see my previous post).

Changed the Nvidia graphic card to an old HD 5670 Radeon AMD and loaded
the catalyst drivers. *Until now no more system hangups has appeared.*
Will try e newer AMD R9 290 card later on.

This explains why my kids PC did not hang at all, due to running it on the
internal Intel CPU graphic.

So for my system, it seems that the freezes was related to graphic card. I
don't know if the bug is in the proprietary Nvidia drivers or in Ubuntu.
Sad to change from the Nvidia, because it always worked like a dream in
Linux.

Den 27 jan 2014 12:11 skrev "VaidhyM" <email address hidden>:

> I am running Ubuntu 12.04 LTS. I am facing the full freeze issues too.
> So much that its froze for 12 times in 2 hours. Hard Reboot is the only
> way to revive the system. The configuration is,
>
> Intel Core i7 2630QM @ 2.00 GHz
> 4 GB RAM (2x2) + 2 GB Swap
> nVidia GT 540M
>
> During freezes trackpad doesn't work. Some have upgraded kernel from 3.2
> to 3.4 and have solved their issues. I am running kernel 3.8 and still
> facing issues. The Xorg display drivers seemed to create problems so
> running Additional Drivers for nVidia recommended by Ubuntu. Any views
> on how to proceed further? Strangest thing is never once a bug report
> was generated after hard reset of the laptop. Any help is appreciated.
> Thanks!
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/993187
>
> Title:
> ubuntu 12.04 completely freezes frequently.
>
> Status in “linux” package in Ubuntu:
> Fix Released
> Status in “xserver-xorg-video-intel” package in Ubuntu:
> Fix Released
> Status in “linux” source package in Precise:
> Fix Released
> Status in “xserver-xorg-video-intel” source package in Precise:
> Fix Released
>
> Bug description:
> Update: 6/12/2012
> This bug is about a complete system lock-up. No other TTYs can be
> started. Mouse doesn't move. Keyboard doesn't react. The only solution is
> hard reset.
>
> Seems to happen on a variety of configurations, including nVidia, ATI
> and Intel graphics.
>
> If you are still able to TTY or SSH into other sessions, move the
> mouse or use the keyboard, file another bug.
>
> Thx. Joris V. (brains).
>
> Update: 5/21/2012
> Updating the kernel to 3.3.6 as suggested by Michael in #91, the system
> seems stable, no freezes yet in 5-6 hrs of using and watching videos for
> couple of hrs.
>
> Original description:
> I recently installed newly released ubuntu 12.04 LTS 64 bit version on
> my desktop. And it is frequently freezing, for the first few hours it ran
> smoothly and when I started watching videos it started freezing randomly.
> I have to use hard restart every time.
> Initially it was only during videos but now even during normal browsing
> it is freezing.
>
> I am using on board graphics and do not have any graphics card
> installed.
>
> Can someone please help me here, I really love the new looks of 12.04
> and it bugs me not being able to use :(
>
> Below is my hardware configuration:
> Proce...

[Andrew Voumard (andrewv)]

Hi,

I made a comment some time ago on what fixed this for me in comment #790:

https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/993187/comments/790

Since then, although it has been pretty stable under 3.4.0-030400.201205210521, I was still getting [albeit less frequently] complete freezups that show exactly the same symptoms as I reported before.

The following NEW FIX has in contrast been COMPLETELY ROCK SOLID [not a single crash yet] in so far as no hardware freezeups are concerned, and I have been hammering the video display on the main KDE login session. I am also remotely accessing that session through x11vnc, and also run 2 separate NX sessions in the background, all of which are very busy & used interactively. When I used to try running 2 busy NX sessions + an x11vnc session on the main KDE login session, it would not take too long for a complete hardware lockup to occur - within an hour easily with 2 busy NX sessions [I only had good stability with the one x11vnc session to the main KDE desktop under 12.04.x LTS]. I am also running virtualbox guests in the NX and x11vnc sessions [Note that I have 32GB memory so it's viable to run lots of sessions & virtualbox guests].

The FIX is quite simply: upgrade from Kubuntu 12.04.5 LTS -> 14.04.1 LTS (note that as of right now, if you upgrade to 14.04, you will in fact be taken to 14.04.1.

Hope this may help others.

Thanks
Andrew

[phil caswell (philcaswell)]

Hey here we are in bug land and i am reporting the same olde same ole lock up on my 14.04 install. it bugs me. out there in internet land on my eeepc netbook 1g ram 320g hd and quickly all goes stop. no keyboard or mouse => hard reboot and on we go, over and over. install lubuntu to no availment of improved netland, just keeps on going lock. any clues greatly appreciated

[rsoika (ralph-soika)]

maybe memory is overclocked? Try to test your memory with "memtester" from a desktop session. This helps me to find the issue in memory. memtest86+ did not find this.

[Saravanan S PAJANCOA (saravanan.s)]

Solution checked in Ubuntu 14.04.1

Use vm.swappiness & vm.vfs_cache_pressure to the minimum possible
Run the below command in Terminal
sudo gedit /etc/sysctl.conf

Add the below line at the end of the file. Select File > Save. Select File > Quit. Restart computer
vm.swappiness=1
vm.vfs_cache_pressure=1

Note:
This can be a workaround, if top command shows kswapd0 taking 99% or 100% cpu, while heavy memory activity
Heavy memory activity may be playing Dota2, browsing faulty websites, etc...
Suggested swap partition size in Ubuntu 14.04 64bit with heavy memory activity
Atleast double the size of RAM or 20GB whichever is bigger
Use bigger swap partition than the current, if the above issue still persists
Example swap entry in /etc/fstab to enable swap manually in /dev/sda7
/dev/sda7 none swap sw 0 0

https://sites.google.com/site/unityindiversity99/

[Nelson Álvarez Sáez (alvareznelson)]

This bug also affects me, over three years after the bug was posted.
My comuter is an Acer Aspire E1-410-2832
Intel Celeron quad core processor N2920
Intel graphics
4 GB RAM
Happens randomly in ALL internet browsers.