Comment 0 for bug 594129

Recently the following happened:
X was hanging/crashing. SysRq did work.

In Syslog was logged:

Jun 14 14:42:30 hostname kernel: [44736.147917] SysRq : Changing Loglevel
Jun 14 14:42:30 hostname kernel: [44736.147932] Loglevel set to 4
Jun 14 14:42:54 hostname kernel: [44760.356093] INFO: task i915:679 blocked for more than 120 seconds.
Jun 14 14:42:54 hostname kernel: [44760.356103] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jun 14 14:42:54 hostname kernel: [44760.356111] i915 D 000009ac 0 679 2 0x00000000
Jun 14 14:42:54 hostname kernel: [44760.356123] f1c23ed0 00000046 f68c0000 000009ac 00000000 c0846740 f207cf8c c0846740
Jun 14 14:42:54 hostname kernel: [44760.356142] 35468b4e 0000287f c0846740 c0846740 f207cf8c c0846740 c0846740 f69ec1c0
Jun 14 14:42:54 hostname kernel: [44760.356159] 00000000 0000287f f207cce0 f2116014 f2116018 ffffffff f1c23efc c058a566
Jun 14 14:42:54 hostname kernel: [44760.356177] Call Trace:
Jun 14 14:42:54 hostname kernel: [44760.356196] [<c058a566>] __mutex_lock_slowpath+0xc6/0x130
Jun 14 14:42:54 hostname kernel: [44760.356205] [<c058a485>] mutex_lock+0x25/0x40
Jun 14 14:42:54 hostname kernel: [44760.356249] [<f86bc673>] intel_idle_update+0x33/0x180 [i915]
Jun 14 14:42:54 hostname kernel: [44760.356262] [<c013eff3>] ? finish_task_switch+0x43/0xc0
Jun 14 14:42:54 hostname kernel: [44760.356271] [<c058956c>] ? schedule+0x44c/0x840
Jun 14 14:42:54 hostname kernel: [44760.356302] [<f86ad307>] ? i915_gem_retire_work_handler+0x67/0x80 [i915]
Jun 14 14:42:54 hostname kernel: [44760.356314] [<c016369e>] run_workqueue+0x8e/0x150
Jun 14 14:42:54 hostname kernel: [44760.356347] [<f86bc640>] ? intel_idle_update+0x0/0x180 [i915]
Jun 14 14:42:54 hostname kernel: [44760.356357] [<c01637e4>] worker_thread+0x84/0xe0
Jun 14 14:42:54 hostname kernel: [44760.356367] [<c0167740>] ? autoremove_wake_function+0x0/0x50
Jun 14 14:42:54 hostname kernel: [44760.356377] [<c0163760>] ? worker_thread+0x0/0xe0
Jun 14 14:42:54 hostname kernel: [44760.356386] [<c01674b4>] kthread+0x74/0x80
Jun 14 14:42:54 hostname kernel: [44760.356394] [<c0167440>] ? kthread+0x0/0x80
Jun 14 14:42:54 hostname kernel: [44760.356404] [<c0104087>] kernel_thread_helper+0x7/0x10
Jun 14 14:42:54 hostname kernel: [44760.356429] INFO: task Xorg:996 blocked for more than 120 seconds.
Jun 14 14:42:54 hostname kernel: [44760.356435] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jun 14 14:42:54 hostname kernel: [44760.356441] Xorg D 0000c1bb 0 996 970 0x00400004
Jun 14 14:42:54 hostname kernel: [44760.356452] f2b07e20 00203082 00000034 0000c1bb 00000000 c0846740 f2af8f7c c0846740
Jun 14 14:42:54 hostname kernel: [44760.356470] 176f6924 0000287f c0846740 c0846740 f2af8f7c c0846740 c0846740 f7101340
Jun 14 14:42:54 hostname kernel: [44760.356487] 176f32ae 0000287f f2af8cd0 f2116014 f2116018 ffffffff f2b07e4c c058a566
Jun 14 14:42:54 hostname kernel: [44760.356504] Call Trace:
Jun 14 14:42:54 hostname kernel: [44760.356514] [<c058a566>] __mutex_lock_slowpath+0xc6/0x130
Jun 14 14:42:54 hostname kernel: [44760.356524] [<c058a485>] mutex_lock+0x25/0x40
Jun 14 14:42:54 hostname kernel: [44760.356554] [<f86ad220>] i915_gem_throttle_ioctl+0x30/0x70 [i915]
Jun 14 14:42:54 hostname kernel: [44760.356584] [<f843c7cd>] drm_ioctl+0x25d/0x3e0 [drm]
Jun 14 14:42:54 hostname kernel: [44760.356615] [<f86ad1f0>] ? i915_gem_throttle_ioctl+0x0/0x70 [i915]
Jun 14 14:42:54 hostname kernel: [44760.356629] [<c01410f9>] ? update_curr+0x169/0x2a0
Jun 14 14:42:54 hostname kernel: [44760.356639] [<c016d4f5>] ? sched_clock_local+0xa5/0x180
Jun 14 14:42:54 hostname kernel: [44760.356650] [<c016aaaf>] ? __remove_hrtimer+0x2f/0xa0
Jun 14 14:42:54 hostname kernel: [44760.356659] [<c016ae38>] ? lock_hrtimer_base+0x28/0x50
Jun 14 14:42:54 hostname kernel: [44760.356669] [<c016bc86>] ? hrtimer_try_to_cancel+0x36/0xb0
Jun 14 14:42:54 hostname kernel: [44760.356695] [<f843c570>] ? drm_ioctl+0x0/0x3e0 [drm]
Jun 14 14:42:54 hostname kernel: [44760.356707] [<c0216231>] vfs_ioctl+0x21/0x90
Jun 14 14:42:54 hostname kernel: [44760.356715] [<c058956c>] ? schedule+0x44c/0x840
Jun 14 14:42:54 hostname kernel: [44760.356724] [<c0216519>] do_vfs_ioctl+0x79/0x310
Jun 14 14:42:54 hostname kernel: [44760.356734] [<c0150ca0>] ? sys_setitimer+0x40/0x90
Jun 14 14:42:54 hostname kernel: [44760.356743] [<c0216817>] sys_ioctl+0x67/0x80
Jun 14 14:42:54 hostname kernel: [44760.356751] [<c01033ec>] syscall_call+0x7/0xb

I'm running a DELL Inspiron 6400 with Intel graphics and had never problems with hanging/crashing X since using Ubuntu. Standby/Resume works.

It's getting slowly annoying - things that worked just stop working in newer releases (sorry for the rant but...)

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-22-generic 2.6.32-22.36
Regression: Yes
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.32-22.36-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: peer 2218 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xefebc000 irq 21'
   Mixer name : 'SigmaTel STAC9200'
   Components : 'HDA:83847690,102801bd,00102201 HDA:14f12bfa,14f100c3,00090000'
   Controls : 12
   Simple ctrls : 7
CheckboxSubmission: 27774017cc2538f163c801a2a9afdb5a
CheckboxSystem: d00f84de8a555815fa1c4660280da308
Date: Mon Jun 14 15:19:01 2010
Frequency: This has only happened once.
HibernationDevice: RESUME=UUID=018bdd59-a71d-4c23-98c3-21871c5d7d6d
MachineType: Dell Inc. MM061
ProcCmdLine: root=UUID=50ce24c3-8349-4b27-8c69-27211736429a ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=de_DE.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34
RfKill:
 0: dell-wifi: Wireless LAN
  Soft blocked: no
  Hard blocked: yes
SourcePackage: linux
WpaSupplicantLog:

dmi.bios.date: 06/13/2007
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A17
dmi.board.name: 0KD882
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA17:bd06/13/2007:svnDellInc.:pnMM061:pvr:rvnDellInc.:rn0KD882:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: MM061
dmi.sys.vendor: Dell Inc.