[Bug 671155] [NEW] system crashes randomly, needing hard reboot

[grdoe]

Public bug reported:

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.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 maverick needs-upstream-testing regression-release

-- 
system crashes randomly, needing hard reboot
https://bugs.launchpad.net/bugs/671155
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