[Packard Bell BV EasyNote MZ35] - Computer freezes when resuming after a suspend

[ckx]

When I start up my laptop after previously suspending it, the system quickly freezes. The screen is black and there is no disk activity. Rebooting by pressing the power button for 5 seconds or so is the only solution. I'm using Ubuntu 9.04, my computer is a Packard Bell EasyNote MZ38-V-081 with 1Gb memory.

Interestingly, hibernate does work to the extent that I can resume my system as I left it. But the wireless network connection fails to work after resuming, forcing me to reboot (bug #368814).

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 9.04
HibernationDevice: RESUME=UUID=6b2bcb7d-a30d-4807-a8f0-bdbb36a5c1d5
Lsusb:
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 002: ID 15ca:00c3 Textech International Ltd. Mini Optical Mouse
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: Packard Bell BV EasyNote MZ35
Package: linux-image-2.6.28-13-generic 2.6.28-13.45
ProcCmdLine: root=UUID=48ff6a99-ab3b-4872-b763-e8c43b095cff ro quiet splash
ProcEnviron:
 LANG=nl_NL.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.28-13.45-generic
SourcePackage: linux

[^_Pepe_^ (jose-angel-fernandez-freire)]

This bug was reported a while ago and there hasn't been any activity in
it recently. We were wondering if this is still an issue? Can you try
with the latest Karmic 9.10 release of Ubuntu? ISO CD images are
available from http://cdimage.ubuntu.com/releases/ .

If the issue remains, could you run the following command from a
Terminal (Applications->Accessories->Terminal) while running Karmic. It
will automatically gather and attach updated debug information to this
report.

apport-collect -p linux 399831

Thanks in advance

[ckx (john2-hendrickx)]

Ubuntu 9.10 doesn't work well on this computer. I tried upgrading at the end of November but my computer kept freezing up and I reverted to 9.04 (which worked like a charm). I tried again yesterday (to my regret). Booting using kernel 2.6.31-16 sometimes hangs and otherwise the computer tends to lock up at some point. Booting into 2.6.28-17 (which I'm using now after the computer froze halfway through my message) works better but wireless is turned off at startup and the touchpad doesn't work.

Tonight, I tried a clean install of 9.10 on a new partition but that didn't go well either. That intalled 2.6.31-14 but that produced a "lightening" icon. If I clicked on that, I got a message that the kernel was unstable and soon after the computer froze. Running dpkg repair from recovery mode installed kernel 2.6.31-16 and that seems to work (but with problems of freezing at boot-time). Weirdly, The screen resolution is set to 1024x768, with no option for 1280x800 which I have now. So I'm considering reinstalling 9.04.

Under 9.10 the suspend and hibernate problems are different. Suspend works but wireless is disabled on wakeup and I can't get it working again. Hibernate does not work, the computer goes directly to wakeup mode and prompts for a password. On resuming, wireless is broken.

I hope this is at least useful information. This is a very common computer in the Netherlands at least, available at the popular discount department stores and electronics shops. It's a pity it doesn't play well with Linux 9.10 and that the suspend/hibernate problems persist.

[ckx (john2-hendrickx)]

I ran "apport-collect -p linux 399831" but I'm not sure it worked properly.

Bug title: computer freezes when resuming after a suspend
Collecting apport information for source package linux...
Uploading additional information to Launchpad bug...
   short text data...
Traceback (most recent call last):
  File "/usr/bin/apport-collect", line 173, in <module>
    upload(report, bug)
  File "/usr/bin/apport-collect", line 52, in upload
    subject='apport-collect data')
  File "/usr/lib/python2.6/dist-packages/lazr/restfulclient/resource.py", line 448, in __call__
    args[key] = simplejson.dumps(value, cls=DatetimeJSONEncoder)
  File "/usr/lib/pymodules/python2.6/simplejson/__init__.py", line 237, in dumps
    **kw).encode(obj)
  File "/usr/lib/pymodules/python2.6/simplejson/encoder.py", line 194, in encode
    return encode_basestring_ascii(o)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xff in position 1367: unexpected code byte

[^_Pepe_^ (jose-angel-fernandez-freire)]

Hi,

Well, It didn't really work at all. Please, could you include your logs placed at /var/log manually??

Thanks in advance.

[ckx (john2-hendrickx)]

I'm afraid I've already reverted to 9.04

[ckx (john2-hendrickx)]

I did a new install of 9.10 on a separate partition. This wasn't easy, I had to install in graphic safe mode, then boot into recovery mode and run repair packages (in order to update everything). That tended to hang halfway through so I had to reboot and repeat several times. Even then, with all packages up to date, the system wasn't stable enough to be usable. Uninstalling and re-installing X helped, following instructions on http://ubuntuforums.org/showthread.php?t=1305459&page=32

sudo apt-get remove --purge xserver-xorg
sudo apt-get install xserver-xorg

My computer still has problems with 9.10 though. It tends to pauze for 10, 15 seconds during boot, sometimes it continues boot, sometimes it just stops booting. The computer froze up today, not sure if that's just one incidence but it looks like 9.10 isn't stable on this machine.

The computer still doesn't start up again after a suspend. Same problem as in 9.04, suspend works but waking up doesn't. I get a blinking cursor and that's all.

Hibernate does not work at all. The computer goes directly to a blinking cursor, the only recourse is to turn it off and on again.

"apport-collect -p linux 399831" fails with the same message as on December 27.

I've attacheed pm-suspend.log. I guess you'll want several logs but I can't see how to upload multiple files. Could you let me know which files you need and how to upload them? I'll keep the system around for a while.

[^_Pepe_^ (jose-angel-fernandez-freire)]

Hi John,

Thanks for your comments and your big effort.

I'd encourage to read

https://wiki.ubuntu.com/DebuggingKernelSuspendHibernateResume

And

https://wiki.ubuntu.com/DebuggingKernelSuspend

To try to find the way to include your logs.

Thanks

[ckx (john2-hendrickx)]

Here are the log files. I'll take a look at the other "debugging" pages and get back to you on that.

[ckx (john2-hendrickx)]

I tried the procedure on DebuggingKernelSuspendHibernateResume. After I typed "sudo pm-suspend" the system was suspended (I thought the "no_console_suspend" boot option would prevent the actual suspend but produce useful information). Anyway, after suspend the computer would not wake up so I had to do a restart.

I also tried the procedure on DebuggingKernelSuspend. You can't execute "sync; echo 1 > /sys/power/pm_trace; pm-suspend" using sudo, you have to log on as root. The only way I know to do that is to reboot in recovery mode and log on as root there. The system was suspended there but did wake up when I pressed the power button.

I may be relevant that this computer also had boot problems. There's usually a pause during boot of 10, 20 seconds before the Ubuntu logo is displayed and boot continues. Sometimes the system hangs but power off/on helps, but on a few occassions, the system just will not boot. Booting into recovery mode would show that booting halted after a message "Clocksource tsc unstable". Booting with the option "clocksource=acpi_pm" will get the system to boot and then it will boot normally (for a while I guess).

[ckx (john2-hendrickx)]

I gave DebuggingKernelSuspend a second try yesterday, this time from a normal boot and using
sudo sync; sudo echo 1 > /sys/power/pm_trace; sudo pm-suspend

But "sudo echo 1 > /sys/power/pm_trace;" won't work, I get an "access denied" message.

[ckx (john2-hendrickx)]

I found the solution to running the commands as root at https://help.ubuntu.com/community/RootSudo
The problem is that you can't run redirection commands as root. The solution was to do this instead:

sudo sh -c "sync; echo 1 > /sys/power/pm_trace; pm-suspend"

I found a "magic number" in the attached dmesg2.txt file. Here's the relevant section:
[ 1.105744] PM: Resume from disk failed.
[ 1.105765] registered taskstats version 1
[ 1.105875] Magic number: 0:436:190
[ 1.105879] hash matches /build/buildd/linux-2.6.31/drivers/base/power/main.c:382
[ 1.105940] acpi device:1c: hash matches
[ 1.106004] rtc_cmos 00:04: setting system clock to 2056-07-12 18:09:48 UTC (2730650988)

[^_Pepe_^ (jose-angel-fernandez-freire)]

Triaged to let the developers go for further information

[ckx (john2-hendrickx)]

I still have this problem in Ubuntu 10.04 and 10.10 alpha 1. I suspect it's related to my video card, an ATI Radeon Xpress 200m. There's a related bug https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/577340 "[RC410] Xpress 200M hangs when resuming from suspend with DRI, with or without KMS" that I've also subscribed to.

[Brad Figg (brad-figg)]

This bug was filed against a series that is no longer supported and so is being marked as Won't Fix. If this issue still exists in a supported series, please file a new bug.

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