Xorg freeze

[Xtien]

I have multiple freezes per day. I can trigger this by starting Android Studio. Sometimes it happens in Gedit loading a large file, or in a shell window.

What I see is that in System Monitor, CPU2 or CPU3 (there's 12, only 2 or 3 go to 100% during freeze) goes to 100% and stays there for 5 or more minutes. All other CPUs are at less than 5%. In the "processes" tab no processes use significant CPU. But when I go to a shell (ctrl-alt-F2) and type "top", I see Xorg taking ~50% CPU and 2.4% memory.
 I tried different versions of AS, different versions of Gradle, tried Oracle Java instead of openjdk, no change. Most of the time, Firefox also freezes after a short while, then everything freezes. The freeze does stop, after a maximum of 15 minutes. Sometimes, I need to do a hard reboot.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: xorg 1:7.7+7ubuntu4
ProcVersionSignature: Ubuntu 4.2.0-23.28-generic 4.2.6
Uname: Linux 4.2.0-23-generic x86_64
NonfreeKernelModules: nvidia
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 352.63 Sat Nov 7 21:25:42 PST 2015
 GCC version: gcc version 5.2.1 20151010 (Ubuntu 5.2.1-22ubuntu2)
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
BootLog:

CurrentDesktop: Unity
Date: Thu Jan 7 13:12:34 2016
DistUpgraded: Fresh install
DistroCodename: wily
DistroVariant: ubuntu
GpuHangFrequency: Continuously
GpuHangReproducibility: Yes, I can easily reproduce it
GpuHangStarted: Since before I upgraded
GraphicsCard:
 NVIDIA Corporation GM206 [GeForce GTX 960] [10de:1401] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:3205]
InstallationDate: Installed on 2015-12-13 (24 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: MSI MS-7881
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-23-generic.efi.signed root=UUID=eea1d4c7-5f21-40a5-b73d-fed6b0a48f69 ro noprompt persistent quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/20/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.70
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: X99S XPOWER AC (MS-7881)
dmi.board.vendor: MSI
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MSI
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.70:bd03/20/2015:svnMSI:pnMS-7881:pvr1.0:rvnMSI:rnX99SXPOWERAC(MS-7881):rvr1.0:cvnMSI:ct3:cvr1.0:
dmi.product.name: MS-7881
dmi.product.version: 1.0
dmi.sys.vendor: MSI
version.compiz: compiz 1:0.9.12.2+15.10.20151015-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.64-1
version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3
xserver.bootTime: Thu Jan 7 13:11:54 2016
xserver.configfile: default
xserver.devices:
 input Power Button KEYBOARD, id 6
 input Power Button KEYBOARD, id 7
 input Logitech USB Optical Mouse MOUSE, id 8
 input AT Translated Set 2 keyboard KEYBOARD, id 9
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:

xserver.version: 2:1.17.2-1ubuntu9.1

[Xtien (xtien)]

Dmesg and xorg.log were taken during a freeze.

[Xtien (xtien)]

On 10-01-16 02:54, Christopher M. Penalver wrote:
> Xtien, thank you for reporting this and helping make Ubuntu better.
>
> As per http://us.msi.com/product/motherboard/support/X99S-XPOWER-AC.html
> #down-bios an update to your computer's buggy and outdated BIOS is
> available (1.8). If you update to this following
> https://help.ubuntu.com/community/BIOSUpdate does it change anything?

Christopher,

you're a darling!

I updated the bios to 1.8, and I managed to build my project in Android
Studio a number of times without any freezes. That's more than I've been
able to do in the last four or so months. As I have thought the problem
had gone before, can we keep the bug open for another few days? I'll let
you know, soon as I went through 48 hours without a "100% cpu freeze",
you can close the bug.
I'm really happy.

Where can I send the flowers? (in Amsterdam, that's what you send people
when you're grateful).

dagdag
Christine

>
> For more on BIOS updates and linux, please see
> https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette
> .
>
> Please note your current BIOS is already in the Bug Description, so
> posting this on the old BIOS would not be helpful. As well, you don't
> have to create a new bug report.
>
> Once the BIOS is updated, if the problem is still reproducible:
> 1) Please provide the output of the following terminal command (not perform an apport-collect):
> sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
> 2) Please make a comment specifically advising on if there was an improvement or not.
> 3) Please mark this report Status New. If it's not reproducible, please mark this as Invalid.
>
> Thank you for your understanding.
>
> ** Tags added: bios-outdated-1.80
>
> ** Changed in: xorg (Ubuntu)
> Importance: Undecided => Low
>
> ** Changed in: xorg (Ubuntu)
> Status: New => Incomplete
>

--
dagdag is just a two character rotation of byebye

[Xtien (xtien)]

After the bios upgrade to 1.8, I have had not a single crash. I rebooted my computer, did everything I could to reproduce the crash, but it didn't happen. I can actually get some work done now. I'm a happy person.
I think it's ok to close the bug.

[penalvch (penalvch)]

Xtien, to advise, you don't have to file new reports about this issue. Instead, this report can be re-opened.

To clarify, does this issue happen if you use nouveau instead of the nvidia proprietary drivers?

[Xtien (xtien)]

Oh, I'm sorry. A while ago I re-opened a bug, then I was told I should file a separate bug instead. Never mind.

I haven't tried this particular bug with nouveau. The reason I use Nvidia drivers is that I couldn't get my system to work with nouveau. I used to use nouveau until about a year ago. If you want me to try, I can try. In my experience it's a lot of work, especially if screens don't work after restart with nouveau.

[Xtien (xtien)]

Fyi, the bug didn't occur between the first boot with the new bios, and the first reboot after that. I rebooted just to see if that wouldn't bring back the bug. I usually don't reboot that often. I checked the overclock rate, it's at "no overclock" (i.e. 100%).

[penalvch (penalvch)]

Xtien, it may be more helpful for you to do initial testing of nouveau via a live environment of http://cdimage.ubuntu.com/daily-live/current/ .

[Xtien (xtien)]

Nouveau makes it worse. When I start Android Studio, Firefox immediately grays out, AS stops loading before it even opens a window. Then the computer remains frozen, until I stop java processes in a shell.
Also, I don't see how a graphics issue can make CPU2 or CPU3 hang, but never one of the other CPUs.

It can't be just a bug in Android Studio, because AS should not be capable of hanging up my computer. Also, it can't be just a bug in Ubuntu or in the bios or cpu, because it only happens with Android Studio (except once in gedit and once in a shell). I suspect AS does something other software doesn't do, which triggers a glitch elsewhere.

Yesterday night, I ran Prime95 software to calculate Mersenne prime numbers. This kept my cpus at 500% with low priority processes. All software would still run normally, not slower, but AS wouldn't run. It pushed prime to using over 600%, which is weird, and it wouldn't start, just hang until killed.
I tried Prime95 because they found a glitch in Intel Skylake cpus. My cpu is 5th generation, not Skylake.

[penalvch (penalvch)]

Xtien, to clarify https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1531845/comments/14 you tested the daily x64 live environment with nouveau?

[Xtien (xtien)]

I tested Nouveau with the standard iso from the ubuntu site. Should I test with the daily build?

Currently, I don't have any issues, after rebooting after testing with Nouveau. I hesitate to test right now, I'd like to get some work done first, I"m afraid that rebooting will give me freezes again.
I'll see what I can do with testing nouveau from a daily build.

[Xtien (xtien)]

My computer hasn't frozen in over a week. I haven't rebooted, until this morning when an Ubuntu update wanted me to reboot. Now the freeze issue is back, seemingly worse than before. 3 reboots didn't change this.

I noted that in "System Monitor", CPU2 gets stuck at 100%. However, when I type "top" in a shell, total cpu use is under 3%.

[Xtien (xtien)]

Today I tried the daily build of Ubuntu 16.04, from a live cd usb. Nouveau worked fine, but I can't seem to run Android Studio on a live cd, so I couldn't test the freeze issue. There was a problem with java. Maybe I should create a live cd usb with a large disk space, so I can install java and as on that. I tried to run android studio from the harddisk, that I had mounted.

[Xtien (xtien)]

I have been working with no problems since Jan. 20. Today an Ubuntu update wanted me to reboot, then after reboot the computer froze when I started Android Studio. Rebooted again, same, and again. What seems to help is when I type

IBUS_ENABLE_SYNC_MODE=1 ibus-daemon -xrd
(from here: http://tools.android.com/knownissues/ibus)

I'm not sure if this actually works, but now I disabled ibus and I have no freeze. The issue they report is different from what I see. For now, I'll just never reboot my computer. I hope someone is working on the bug. If there's anything I can do, let me know.

[Launchpad Janitor (janitor)]

[Expired for xorg (Ubuntu) because there has been no activity for 60 days.]

[Xtien (xtien)]

My last post was on Feb 2, that's not 60 days. The problem still exists.

[penalvch (penalvch)]

Xtien:
>"My last post was on Feb 2, that's not 60 days."

Feb. 2 to April 2 is clearly 60 days.

Despite this, to clarify https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1531845/comments/18 , you tested the x64 version?