[Bug 635379] [NEW] intel i945 GPU lockup, requires reboot to restore X

[Steve Langasek]

Public bug reported:

Twice in the past week, I've had an i915 GPU lockup with the maverick
kernel.  First with 2.6.35-16, now this latest with 2.6.35-20:

Sep  8 17:25:43 dario kernel: [440048.562567] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Sep  8 17:25:43 dario kernel: [440048.562706] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 16037579 at 16037578)

This manifests as the X screen freezing for a few seconds, then going
black, then X restarting in failsafe mode.  Console works fine, but drm
doesn't come back without a reboot.

I've noticed a rough but not definite correlation with toggling the
video output selections and/or the lid status.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-20-generic 2.6.35-20.29
Regression: Yes
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.35-20.29-generic 2.6.35.4
Uname: Linux 2.6.35-20-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  vorlon     2274 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xee240000 irq 47'
   Mixer name	: 'Analog Devices AD1981'
   Components	: 'HDA:11d41981,17aa2025,00100200'
   Controls      : 20
   Simple ctrls  : 11
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 79HT50WW-1.07'
   Mixer name	: 'ThinkPad EC 79HT50WW-1.07'
   Components	: ''
   Controls      : 2
   Simple ctrls  : 1
Card29.Amixer.values:
 Simple mixer control 'Console',0
   Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
   Playback channels: Mono
   Limits: Playback 0 - 14
   Mono: Playback 14 [100%] [off]
Date: Fri Sep 10 15:01:54 2010
Frequency: Once every few days.
HibernationDevice: RESUME=UUID=f108133c-6b9d-4d28-9058-0b3a0c5549b4
MachineType: LENOVO 6371CTO
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: root=/dev/mapper/hostname-root ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.38
SourcePackage: linux
WpaSupplicantLog:
 
dmi.bios.date: 12/27/2006
dmi.bios.vendor: LENOVO
dmi.bios.version: 7IET23WW (1.04 )
dmi.board.name: 6371CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7IET23WW(1.04):bd12/27/2006:svnLENOVO:pn6371CTO:pvrThinkPadT60:rvnLENOVO:rn6371CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 6371CTO
dmi.product.version: ThinkPad T60
dmi.sys.vendor: LENOVO

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


** Tags: amd64 apport-bug kernel-graphics maverick needs-upstream-testing regression-potential

-- 
intel i945 GPU lockup, requires reboot to restore X
https://bugs.launchpad.net/bugs/635379
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