Created an attachment (id=26894)
intel_gpu_dump.txt.gz

Forwarding this Ubuntu bug:
https://bugs.edge.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/388357

[Problem]
GPU hang with call trace in dmesg occurs subsequent to full screen activity (video playback); also seen by other users after resuming from screen blanking via DPMS and after resuming from screensaver.

[Call Trace]
[ 6000.528124] INFO: task events/1:10 blocked for more than 120 seconds.
[ 6000.528133] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 6000.528140] events/1 D 0000000100151496 0 10 2
[ 6000.528152] ffff8800bded1db0 0000000000000046 ffff8800bded1d30 0000000000013000
[ 6000.528163] ffff8800bdec83a8 0000000000013000 0000000000013000 0000000000013000
[ 6000.528173] 0000000000013000 0000000000013000 ffff8800bdec83a8 0000000000013000
[ 6000.528183] Call Trace:
[ 6000.528203] [<ffffffff806d9467>] __mutex_lock_slowpath+0xd7/0x160
[ 6000.528216] [<ffffffff802436b1>] ? finish_task_switch+0x51/0x110
[ 6000.528225] [<ffffffff806d9186>] mutex_lock+0x26/0x50
[ 6000.528260] [<ffffffffa0251ec8>] i915_gem_retire_work_handler+0x38/0x90 [i915]
[ 6000.528283] [<ffffffffa0251e90>] ? i915_gem_retire_work_handler+0x0/0x90 [i915]
[ 6000.528292] [<ffffffff802643d5>] run_workqueue+0x95/0x170
[ 6000.528300] [<ffffffff80264554>] worker_thread+0xa4/0x120
[ 6000.528310] [<ffffffff80268e90>] ? autoremove_wake_function+0x0/0x40
[ 6000.528318] [<ffffffff802644b0>] ? worker_thread+0x0/0x120
[ 6000.528327] [<ffffffff80268a35>] kthread+0x55/0xa0
[ 6000.528335] [<ffffffff802130ca>] child_rip+0xa/0x20
[ 6000.528344] [<ffffffff802689e0>] ? kthread+0x0/0xa0
[ 6000.528351] [<ffffffff802130c0>] ? child_rip+0x0/0x20

[Original Report]
I had finished watching a video in totem, and had been writing email using mutt and vim in a terminal for some time, when the screen stopped updating. My music was still playing, though; everything seemed to be running except for the X server (symptoms similar to bug 359392).

I was able to ssh in from another system and collect intel_gpu_dump output, which i will attach.

/proc/interrupts showed no change in the number of interrupts for i915.

The kernel logged a page allocation failure while intel_gpu_dump was running(!), which will be shown in the attached dmesg.

I've seen it happen twice now (in the span of 2 hours), and both times, dmesg shows the above trace.

ProblemType: Bug
Architecture: amd64
Date: Wed Jun 17 10:20:15 2009
DistroRelease: Ubuntu 9.10
MachineType: LENOVO 6465CTO
Package: xserver-xorg-video-intel 2:2.7.99.1+git20090602.ec2fde7c-0ubuntu2
ProcCmdLine: root=UUID=305dde78-d20a-4248-aaf4-09447b7c5791 ro quiet splash
ProcEnviron:
 LC_COLLATE=C
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/zsh
ProcVersionSignature: Ubuntu 2.6.30-9.10-generic
RelatedPackageVersions:
 xserver-xorg 1:7.4~5ubuntu21
 libgl1-mesa-glx 7.4.1-1ubuntu2
 libdrm2 2.4.11-0ubuntu1
 xserver-xorg-video-intel 2:2.7.99.1+git20090602.ec2fde7c-0ubuntu2
 xserver-xorg-video-ati 1:6.12.2-2ubuntu1
SourcePackage: xserver-xorg-video-intel
Uname: Linux 2.6.30-9-generic x86_64
dmi.bios.date: 01/21/2008
dmi.bios.vendor: LENOVO
dmi.bios.version: 7LETB0WW (2.10 )
dmi.board.name: 6465CTO
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:bvr7LETB0WW(2.10):bd01/21/2008:svnLENOVO:pn6465CTO:pvrThinkPadT61:rvnLENOVO:rn6465CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 6465CTO
dmi.product.version: ThinkPad T61
dmi.sys.vendor: LENOVO
fglrx: Not loaded
system:
 distro: Ubuntu
 architecture: x86_64kernel: 2.6.30-9-generic