system crashes randomly, needing hard reboot

[grdoe]

Randomly, but very frequently (once or twice per hour), the system freezes, crashes, then needing a hard reboot.

After rebooting, the last lines before crash in logs are ALWAYS some of the following:
"Skipping EDID probe due to cached edid"
"EXT4-fs (sda5): re-mounted. Opts: errors=remount-ro,commit=0"
"EXT4-fs (sda7): re-mounted. Opts: commit=0"

And some times some of the following as well:
"padlock: VIA PadLock not detected."
"EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null)"

Also, this bug never occurred in this hardware before, with Xubuntu 10.04, but quite often now with Ubuntu 10.10.
At first I though it was linked to a pulseaudio issue, not yet solved : https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/629339
So I posted a question as well for the pulseaudio issue : https://answers.launchpad.net/ubuntu/+question/132340

But now it seems that bug occurs as well when no sound is played at all, and when pulseaudio seems to be fine.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-22-generic 2.6.35-22.35
Regression: Yes
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.35-22.35-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: gbr 1600 F.... pulseaudio
CRDA: Error: [Errno 2] Aucun fichier ou dossier de ce type
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf6adc000 irq 48'
   Mixer name : 'Intel Cantiga HDMI'
   Components : 'HDA:111d76b2,10280233,00100302 HDA:14f12c06,14f1000f,00100000 HDA:80862802,80860101,00100000'
   Controls : 24
   Simple ctrls : 15
Date: Thu Nov 4 21:09:06 2010
Frequency: Once a day.
HibernationDevice: RESUME=UUID=09504a39-2e8e-4f02-b6ee-4a67ee16602c
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
MachineType: Dell Inc. Latitude E6400
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=1af00dfd-15c8-4163-8fd5-ed9cb20fe933 ro quiet splash
ProcEnviron:
 LANG=fr_FR.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.38
SourcePackage: linux
dmi.bios.date: 06/04/2010
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A25
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA25:bd06/04/2010:svnDellInc.:pnLatitudeE6400:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude E6400
dmi.sys.vendor: Dell Inc.

[grdoe (gdatad)]

Linux gbr-bck 2.6.35-22-generic #35-Ubuntu SMP Sat Oct 16 20:36:48 UTC 2010 i686 GNU/Linux

Ubuntu 2.6.35-22.35-generic 2.6.35.4

[Victor Campos (victoitor)]

I've been having this random crashing since I installed 10.10. In my case, I did a new install using an old home folder.

Just today I started looking for the problem and noticed this post of yours: https://answers.launchpad.net/ubuntu/+question/132340

I got there since my system crashed today and I say a few occurrences of the pulseaudio error in /var/log/messages before the crash.

I'm kind of new into trying to solve a problem like this, but the crashes are quite disturbing so I'm available to help. Ask anything and I'll try my best to post the results from my machine.

[grdoe (gdatad)]

Issue may be linked to :
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/671155

[grdoe (gdatad)]

@ Victor Campos, pulseaudio issue is fixed for me thanks to a patch here : https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/629339/comments/7
But I still have some crashes issue, not linked to pulseaudio.

[Jonathan Hernandez (jbilbo)]

Yes, seems duplicate for me:

https://bugs.launchpad.net/ubuntu/+source/pm-utils/+bug/610055

[Adam B Butler (adambbutler)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 610055, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.

[penalvch (penalvch)]

grdoe, 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? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.13-rc3

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding.

[Launchpad Janitor (janitor)]

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