display freezes, [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung

[Arnd]

With the current ubuntu kernel linux-image-2.6.32-10-generic version 2.6.32-10.14 on lucid, amd64 I'm experiencing annoying display freezes. System was running fine and stable over weeks! with karmic and its kernels.

Usually the problem occurs after some period of work. When the display suddenly freezes.
Switching to console Strg+1 does not work, only reboot helps. However, network and sysrq still working...

Funny thing is: with mainline kernel 2.6.33.3 (from linux-image-2.6.32-02063203-generic) I even cannot get to the login screen.
Fortunately, 2.6.33-rc4 (from linux-image-2.6.33-020633rc4-generic) seems to work quite stable.
The error messages found in kern.log vary from kernel to kernel:

2.6.32-8.12-generic:
Jan 14 13:34:23 rhea kernel: [ 0.000000] Linux version 2.6.32-8-generic (buildd@crested) (gcc version 4.4.2 (Ubuntu 4.4.2-4ubuntu2) ) #12-Ubuntu SMP Sat Dec 12 12:54:44 UTC 2009 (Ubuntu 2.6.32-8.12-generic)

Jan 14 13:39:58 rhea kernel: [ 359.694181] render error detected, EIR: 0x00000010
Jan 14 13:39:58 rhea kernel: [ 359.694186] IPEIR: 0x00000000
Jan 14 13:39:58 rhea kernel: [ 359.694188] IPEHR: 0x05000000
Jan 14 13:39:58 rhea kernel: [ 359.694190] INSTDONE: 0xffffffff
Jan 14 13:39:58 rhea kernel: [ 359.694191] INSTPS: 0x4001e120
Jan 14 13:39:58 rhea kernel: [ 359.694193] INSTDONE1: 0xbfffffff
Jan 14 13:39:58 rhea kernel: [ 359.694195] ACTHD: 0x0ffffff8
Jan 14 13:39:58 rhea kernel: [ 359.694196] page table error
Jan 14 13:39:58 rhea kernel: [ 359.694198] PGTBL_ER: 0x00100000
Jan 14 13:39:58 rhea kernel: [ 359.694201] [drm:i915_handle_error] *ERROR* EIR stuck: 0x00000010, masking
Jan 14 13:40:00 rhea kernel: [ 361.950036] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Jan 14 13:40:00 rhea kernel: [ 361.950041] render error detected, EIR: 0x00000010
Jan 14 13:40:00 rhea kernel: [ 361.950043] IPEIR: 0x00000000
Jan 14 13:40:00 rhea kernel: [ 361.950044] IPEHR: 0x05000000
Jan 14 13:40:00 rhea kernel: [ 361.950046] INSTDONE: 0xffffffff
Jan 14 13:40:00 rhea kernel: [ 361.950048] INSTPS: 0x4001e120
Jan 14 13:40:00 rhea kernel: [ 361.950049] INSTDONE1: 0xbfffffff
Jan 14 13:40:00 rhea kernel: [ 361.950051] ACTHD: 0x0ffffff8
Jan 14 13:40:00 rhea kernel: [ 361.950053] page table error
Jan 14 13:40:00 rhea kernel: [ 361.950054] PGTBL_ER: 0x00100000
Jan 14 13:40:00 rhea kernel: [ 361.950056] i915: Waking up sleeping processes
Jan 14 13:40:00 rhea kernel: [ 361.950092] [drm:i915_wait_request] *ERROR* i915_wait_request returns -5 (awaiting 65946 at 65937)
Jan 14 13:40:01 rhea kernel: [ 362.711352] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Jan 14 13:40:01 rhea kernel: [ 362.711357] render error detected, EIR: 0x00000010
Jan 14 13:40:01 rhea kernel: [ 362.711359] IPEIR: 0x00000000
Jan 14 13:40:01 rhea kernel: [ 362.711361] IPEHR: 0x05000000
Jan 14 13:40:01 rhea kernel: [ 362.711363] INSTDONE: 0xffffffff
Jan 14 13:40:01 rhea kernel: [ 362.711364] INSTPS: 0x4001e120
Jan 14 13:40:01 rhea kernel: [ 362.711366] INSTDONE1: 0xbfffffff
Jan 14 13:40:01 rhea kernel: [ 362.711368] ACTHD: 0x0ffffff8
Jan 14 13:40:01 rhea kernel: [ 362.711369] page table error
Jan 14 13:40:01 rhea kernel: [ 362.711371] PGTBL_ER: 0x00100000
Jan 14 13:40:01 rhea kernel: [ 362.711373] [drm:i915_handle_error] *ERROR* EIR stuck: 0x00000010, masking
Jan 14 13:40:01 rhea kernel: [ 362.711376] i915: Waking up sleeping processes
Jan 14 13:40:01 rhea kernel: [ 362.711775] [drm:i915_wait_request] *ERROR* i915_wait_request returns -5 (awaiting 65958 at 65937)
Jan 14 13:40:02 rhea kernel: [ 363.461337] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Jan 14 13:40:02 rhea kernel: [ 363.461341] render error detected, EIR: 0x00000010
Jan 14 13:40:02 rhea kernel: [ 363.461343] IPEIR: 0x00000000
Jan 14 13:40:02 rhea kernel: [ 363.461345] IPEHR: 0x05000000
Jan 14 13:40:02 rhea kernel: [ 363.461347] INSTDONE: 0xffffffff
Jan 14 13:40:02 rhea kernel: [ 363.461348] INSTPS: 0x4001e120
Jan 14 13:40:02 rhea kernel: [ 363.461350] INSTDONE1: 0xbfffffff
Jan 14 13:40:02 rhea kernel: [ 363.461352] ACTHD: 0x0ffffff8
Jan 14 13:40:02 rhea kernel: [ 363.461354] page table error
Jan 14 13:40:02 rhea kernel: [ 363.461355] PGTBL_ER: 0x00100000
Jan 14 13:40:02 rhea kernel: [ 363.461359] render error detected, EIR: 0x00000010
Jan 14 13:40:02 rhea kernel: [ 363.461361] IPEIR: 0x00000000
Jan 14 13:40:02 rhea kernel: [ 363.461363] IPEHR: 0x05000000
Jan 14 13:40:02 rhea kernel: [ 363.461364] INSTDONE: 0xffffffff
Jan 14 13:40:02 rhea kernel: [ 363.461366] INSTPS: 0x4001e120
Jan 14 13:40:02 rhea kernel: [ 363.461367] INSTDONE1: 0xbfffffff
Jan 14 13:40:02 rhea kernel: [ 363.461369] ACTHD: 0x0ffffff8
Jan 14 13:40:02 rhea kernel: [ 363.461371] page table error
Jan 14 13:40:02 rhea kernel: [ 363.461372] PGTBL_ER: 0x00100000
Jan 14 13:40:02 rhea kernel: [ 363.461375] [drm:i915_handle_error] *ERROR* EIR stuck: 0x00000010, masking
Jan 14 13:40:02 rhea kernel: [ 363.461381] [drm:i915_handle_error] *ERROR* EIR stuck: 0x00000010, masking
Jan 14 13:40:02 rhea kernel: [ 363.461384] i915: Waking up sleeping processes
Jan 14 13:40:02 rhea kernel: [ 363.461394] [drm:i915_wait_request] *ERROR* i915_wait_request returns -5 (awaiting 65960 at 65937)
Jan 14 13:40:03 rhea kernel: [ 364.210073] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Jan 14 13:40:03 rhea kernel: [ 364.210078] render error detected, EIR: 0x00000010
Jan 14 13:40:03 rhea kernel: [ 364.210080] IPEIR: 0x00000000
Jan 14 13:40:03 rhea kernel: [ 364.210082] IPEHR: 0x05000000
Jan 14 13:40:03 rhea kernel: [ 364.210084] INSTDONE: 0xffffffff
Jan 14 13:40:03 rhea kernel: [ 364.210085] INSTPS: 0x4001e120
Jan 14 13:40:03 rhea kernel: [ 364.210087] INSTDONE1: 0xbfffffff
Jan 14 13:40:03 rhea kernel: [ 364.210088] ACTHD: 0x0ffffff8
Jan 14 13:40:03 rhea kernel: [ 364.210090] page table error
Jan 14 13:40:03 rhea kernel: [ 364.210092] PGTBL_ER: 0x00100000
Jan 14 13:40:03 rhea kernel: [ 364.210094] [drm:i915_handle_error] *ERROR* EIR stuck: 0x00000010, masking
Jan 14 13:40:03 rhea kernel: [ 364.210097] i915: Waking up sleeping processes
Jan 14 13:40:03 rhea kernel: [ 364.210414] [drm:i915_wait_request] *ERROR* i915_wait_request returns -5 (awaiting 65963 at 65937)
Jan 14 13:40:03 rhea kernel: [ 364.210664] [drm:i915_gem_execbuffer] *ERROR* Execbuf while wedged
Jan 14 13:40:51 rhea kernel: [ 412.942840] SysRq : Emergency Sync
Jan 14 13:40:51 rhea kernel: [ 412.942882] Emergency Sync complete
Jan 14 13:40:52 rhea kernel: [ 413.774839] SysRq : Emergency Remount R/O

2.6.32-10.14-generic:
Jan 13 15:59:52 rhea kernel: [ 0.000000] Linux version 2.6.32-10-generic (buildd@yellow) (gcc version 4.4.3 20100105 (prerelease) (Ubuntu 4.4.2-8ubuntu2) ) #14-Ubuntu SMP Thu Jan 7 17:38:08 UTC 2010 (Ubuntu 2.6.32-10.14-generic)

Jan 13 16:00:12 rhea kernel: [ 37.801274] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Jan 13 16:00:12 rhea kernel: [ 37.801280] render error detected, EIR: 0x00000000
Jan 13 16:00:12 rhea kernel: [ 37.801282] i915: Waking up sleeping processes
Jan 13 16:00:12 rhea kernel: [ 37.801295] [drm:i915_wait_request] *ERROR* i915_wait_request returns -5 (awaiting 17 at 16)
Jan 13 16:00:13 rhea kernel: [ 38.550084] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Jan 13 16:00:13 rhea kernel: [ 38.550087] render error detected, EIR: 0x00000000
Jan 13 16:00:13 rhea kernel: [ 38.550089] i915: Waking up sleeping processes
Jan 13 16:00:13 rhea kernel: [ 38.550151] [drm:i915_wait_request] *ERROR* i915_wait_request returns -5 (awaiting 19 at 16)
Jan 13 16:00:13 rhea kernel: [ 38.550459] [drm:i915_gem_execbuffer] *ERROR* Execbuf while wedged

mainline 2.6.32.3:
Jan 14 14:40:04 rhea kernel: [ 0.000000] Linux version 2.6.32-02063203-generic (root@zinc) (gcc version 4.2.3 (Ubuntu 4.2.3-2ubuntu7)) #02063203 SMP Thu Jan 7 10:09:47 UTC 2010

Jan 14 14:40:10 rhea kernel: [ 32.570021] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Jan 14 14:40:10 rhea kernel: [ 32.570027] render error detected, EIR: 0x00000000
Jan 14 14:40:10 rhea kernel: [ 32.570029] i915: Waking up sleeping processes
Jan 14 14:40:10 rhea kernel: [ 32.570056] [drm:i915_wait_request] *ERROR* i915_wait_request returns -5 (awaiting 15 at 11)
Jan 14 14:40:10 rhea kernel: [ 32.570150] [drm:i915_gem_execbuffer] *ERROR* Execbuf while wedged
Jan 14 14:40:17 rhea kernel: [ 39.900005] eth0: no IPv6 routers present
Jan 14 14:40:36 rhea kernel: [ 58.349306] SysRq : Emergency Sync
Jan 14 14:40:36 rhea kernel: [ 58.349565] Emergency Sync complete
Jan 14 14:40:38 rhea kernel: [ 60.853313] SysRq : Emergency Remount R/O

[Martin Olsson (mnemo)]

Can you please attach the output of "lspci -vvnn" to this bug report. After that, wait until it happens again... when it hangs, please login via ssh from another computer; once logged into the hung computer save the contents of "dmesg" plus copies of the files "/var/log/X*" and attach those to the bug report as well.

Finally, please collect a batch buffer dump recorded on the hung machine. The specific steps required to do this is described here:
https://wiki.ubuntu.com/X/Troubleshooting/Freeze#How%20to%20Get%20a%20Batchbuffer%20Dump%20%28-intel%20only%29

PS, I started to experience a similar hang on lucid just yesterday.

[Martin Olsson (mnemo)]

btw, I selected the "Recovery" option for the latest kernel now, then I selected "Repair packages" and that fetched and installed a new mesa version (7.7-0ubuntu5) and using that new mesa version I can boot Lucid again (so you might want to try that as well and see if that help you too).

[Arnd (arnd-arndnet)]

System is up for several hours now with new mesa / xorg packages and standard ubuntu kernel.
Not seeing any issues with graphics. Dmesg is clean.
So this package upgrades seem to have solved my problems. Thanks!

[Jan Nekvasil (jan-nekvasil)]

2.6.32-12-generic #16-Ubuntu x86_64, this bug is back again. Behaves exacly as described in original report.

[Jan Nekvasil (jan-nekvasil)]

Dell Latitude E5500, Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)

[candraxx (candraxx)]

my computer get freez and cant log in. im use ubuntu 9.10..help me...place

[Larry Siden (lsiden)]

The same thing happens on my Thinkpad R52 intermittently.

Mar 8 16:10:13 agentsmith kernel: [ 2.207901] usbcore: registered new interface driver hiddev
Mar 8 16:10:13 agentsmith kernel: [ 2.211445] render error detected, EIR: 0x00000010
Mar 8 16:10:13 agentsmith kernel: [ 2.211447] page table error
Mar 8 16:10:13 agentsmith kernel: [ 2.211449] PGTBL_ER: 0x00000100
Mar 8 16:10:13 agentsmith kernel: [ 2.211452] [drm:i915_handle_error] *ERROR* EIR stuck: 0x00000010, masking
Mar 8 16:10:13 agentsmith kernel: [ 2.211459] render error detected, EIR: 0x00000010
Mar 8 16:10:13 agentsmith kernel: [ 2.211460] page table error
Mar 8 16:10:13 agentsmith kernel: [ 2.211462] PGTBL_ER: 0x00000100
Mar 8 16:10:13 agentsmith kernel: [ 2.228047] [drm] LVDS-8: set mode 1400x1050 16
Mar 8 16:10:13 agentsmith kernel: [ 2.255049] Console: switching to colour frame buffer device 175x65

Please let me know if there is anything else I can provide that might help. lsiden at gmail

[Andrea Vico (andreavico)]

I think my problem is similar.
Asus M2400N laptop with 845GM graphic chip, Kubuntu 10.04 after 9.10 upgrade. I use also
https://launchpad.net/~xorg-edgers/+archive/ppa?field.series_filter=lucid
this package.
I log in by the terminal and start up kde by startx, after some seconds the screen became black and there is a fix white underscore on the upper left corner. I can use the pc by ssh connection.
Some information on the attachment.

[Andrea Vico (andreavico)]

I use 2.6.32-16 standard ubuntu kernel.

[Odin Hørthe Omdal (velmont)]

dmesg said this at hang:

[15407.248013] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
[15407.248023] render error detected, EIR: 0x00000000
[15407.249274] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 1827915 at 1827913)

This is my card:

00:02.0 VGA compatible controller [0300]: Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device [8086:2562] (rev 01)
 Subsystem: Dell Device [1028:0126]
 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
 Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
 Latency: 0
 Interrupt: pin A routed to IRQ 16
 Region 0: Memory at e8000000 (32-bit, prefetchable) [size=128M]
 Region 1: Memory at ff680000 (32-bit, non-prefetchable) [size=512K]
 Capabilities: <access denied>
 Kernel driver in use: i915
 Kernel modules: i915

I'm running newest Lucid.

Linux ingar 2.6.32-16-generic #25-Ubuntu SMP Tue Mar 9 16:33:52 UTC 2010 i686 GNU/Linux

It's exactly as in the bug report.

kern.log is NOW saying (the GPU hasn't hung yet...):

Mar 17 19:09:34 ingar kernel: [ 22.599513] fb0: inteldrmfb frame buffer device
Mar 17 19:09:34 ingar kernel: [ 22.599518] registered panic notifier
Mar 17 19:09:34 ingar kernel: [ 22.599533] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
Mar 17 19:09:34 ingar kernel: [ 22.599601] alloc irq_desc for 17 on node -1
Mar 17 19:09:34 ingar kernel: [ 22.599606] alloc kstat_irqs on node -1
Mar 17 19:09:34 ingar kernel: [ 22.599617] Intel ICH 0000:00:1f.5: PCI INT B -> GSI 17 (level, low) -> IRQ 17
Mar 17 19:09:34 ingar kernel: [ 22.599673] Intel ICH 0000:00:1f.5: setting latency timer to 64
Mar 17 19:09:34 ingar kernel: [ 22.612923] vga16fb: initializing
Mar 17 19:09:34 ingar kernel: [ 22.612933] vga16fb: mapped to 0xc00a0000
Mar 17 19:09:34 ingar kernel: [ 22.613286] fb1: VGA16 VGA frame buffer device
Mar 17 19:09:34 ingar kernel: [ 22.871685] Console: switching to colour frame buffer device 175x65
Mar 17 19:09:35 ingar kernel: [ 23.047184] AC'97 0 analog subsections not ready
Mar 17 19:09:35 ingar kernel: [ 23.124086] intel8x0_measure_ac97_clock: measured 55519 usecs (2675 samples)
Mar 17 19:09:35 ingar kernel: [ 23.124095] intel8x0: clocking to 48000
Mar 17 19:09:36 ingar kernel: [ 24.344564] render error detected, EIR: 0x00000010
Mar 17 19:09:36 ingar kernel: [ 24.344573] [drm:i915_handle_error] *ERROR* EIR stuck: 0x00000010, masking
Mar 17 19:09:36 ingar kernel: [ 24.344595] render error detected, EIR: 0x00000010

[candraxx (candraxx)]

when im get freeze i just reinstal ubuntu i think this more easy..

[Juanma (jm-mico)]

Got similar behaviour on latest lucid kernel. It happens to me normally after closing the lid of the laptop, or coming from standby. Could not say when exactly.

Sys info:
Dell Latitude D820 with i945GMA integrated graph chipset.

Error:
[12881.776095] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
[12881.776109] render error detected, EIR: 0x00000000
[12881.776130] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 771886 at 771885)

kernel: 2.6.32-18-generic-pae

Was working with Karmic with no problems.

[Warren E. Downs (vwdowns)]

I've been having this same kind of hang ever since Kubuntu 9.04. Back then I used the 2.4 version of X to avoid the problem (and I can still do that). It meant I could not have accelerated graphics but that wasn't much of an issue for me. But since 9.10 it also means I cannot suspend and resume (either to ram or disk), which I really need to work to be productive.

So, I've been trying every tip I can find to work around this problem. I'm attaching the logs from the latest hang. Since upgrading to the 2.6.33 kernel at least I can VT switch to the console instead of having to SSH in. And I can even start a new X application (like xterm) which I could never do before. But existing X windows are all gone into never-never land, as is the window manager (though the processes are still there of course).

I'll be trying the various xorg.conf options mentioned here to narrow the subsystem it is in:
https://wiki.ubuntu.com/X/Troubleshooting/Freeze#How%20to%20Get%20a%20Batchbuffer%20Dump%20%28-intel%20only%29

(The batch buffer dump won't be useful on my version but I have the i915_error_state file instead).

[Warren E. Downs (vwdowns)]

I should add-- for me, the hang never occurs when idle, always when I'm multitasking, trying to switch to new window or tab in firefox, burning a DVD, etc.

[alexg (asg1290)]

Same problem here on Lucid 2.6.32-19. I've noticed this anytime I try and change my screensaver to something 3d

kern.log
pr 9 09:01:06 giftshopcustomer-desktop kernel: [ 699.072010] render error detected, EIR: 0x00000010
Apr 9 09:01:06 giftshopcustomer-desktop kernel: [ 699.072018] [drm:i915_handle_error] *ERROR* EIR stuck: 0x00000010, masking
Apr 9 09:01:06 giftshopcustomer-desktop kernel: [ 699.072053] render error detected, EIR: 0x00000010
Apr 9 09:02:04 giftshopcustomer-desktop kernel: [ 756.876011] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Apr 9 09:02:04 giftshopcustomer-desktop kernel: [ 756.876022] render error detected, EIR: 0x00000000
Apr 9 09:02:04 giftshopcustomer-desktop kernel: [ 756.876039] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 31785 at 31784)

Xorg.0.log

Fatal server error:
Failed to submit batchbuffer: Input/output error

Please consult the The X.Org Foundation support
         at http://wiki.x.org
 for help.
Please also check the log file at "/var/log/Xorg.0.log" for additional information.

(II) Power Button: Close
(II) UnloadModule: "evdev"
(II) Power Button: Close
(II) UnloadModule: "evdev"
(II) LITEON Technology USB Multimedia Keyboard: Close
(II) UnloadModule: "evdev"
(II) LITEON Technology USB Multimedia Keyboard: Close
(II) UnloadModule: "evdev"
(II) Microsoft Microsoft 5-Button Mouse with IntelliEye(TM): Close
(II) UnloadModule: "evdev"
(II) Macintosh mouse button emulation: Close
(II) UnloadModule: "evdev"
(II) AIGLX: Suspending AIGLX clients for VT switch
 ddxSigGiveUp: Closing log

[Lepy (grammaton)]

Running mythbuntu 10.04 and experience black screen/x lock up upon video playback, though ssh is operational.
Using kernel 2.6.32-21-generic results in symptoms reported but also has screen corruption when movement is present (mouse cursor, screensaver, or mythtv menu)
Using kernel 2.6.31-21-generic results in symptoms reported but there is no screen corruption with movement on screen.

dmesg shows:
[ 52.284030] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
[ 52.284043] render error detected, EIR: 0x00000000
[ 52.284052] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 1169 at 1168)

xorg reports:
(EE) intel(0): Failed to submit batch buffer, expect rendering corruption or even a frozen display: Input/output error.

lspci -vvnn:
00:02.0 VGA compatible controller [0300]: Intel Corporation 82852/855GM Integrated Graphics Device [8086:3582] (rev 02)
 Subsystem: Gateway 2000 Device [107b:0360]
 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
 Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx+
 Latency: 0
 Interrupt: pin A routed to IRQ 11
 Region 0: Memory at e8000000 (32-bit, prefetchable) [size=128M]
 Region 1: Memory at e0000000 (32-bit, non-prefetchable) [size=512K]
 Region 2: I/O ports at 1800 [size=8]
 Capabilities: <access denied>
 Kernel driver in use: i915
 Kernel modules: i915

[Lepy (grammaton)]

Passing noacpi results in similar results (screen flickering on movement, launching fullscreen video causes black screen) though no errors in dmesg.

Passing acpi=off results in normal operation (screen doesn't flicker, launching fullscreen video is fine), however, dmesg gives "vgaarb: this pci device is not a vga device" and the secondary screen does not work.

[lomat (lomat)]

I have the same problem with my Satellite A50 laptop, which has intel 82852/855GM GPU.
when i start totem to play videos , X crashed
$ lsb_release -rd
Description: Ubuntu 10.04 LTS
Release: 10.04 #RC edition, clearly installed
$ dpkg -l xserver-xorg-video-intel
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Cfg-files/Unpacked/Failed-cfg/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
+++-==============-==============-============================================
ii xserver-xorg-v 2:2.9.1-3ubunt X.Org X server -- Intel i8xx, i9xx display d

$ uname -a
Linux 2.6.32-21-generic #32-Ubuntu SMP Fri Apr 16 08:10:02 UTC 2010 i686 GNU/Linux

[John Baptist (jepst79)]

This is a problem on an HP mini 210-1010nr running i915 driver. My dmesg contains the "Hangcheck timer elapsed" message as well as the "i915_do_wait_request returns -5" message. In addition (and this may or may not be important) I get the message [drm] Big FUFO is enabled" repeated several times around when the happens.

My report differs from the previous reports, though, in that the screen does not totally hang. Instead, X restarts into "recovery" mode. Virtual terminal still work, so I am able to do Ctrl-F1, look at dmesg, etc. Subsequent attempts to restart X fail.

I didn't have this problem running fully updated Karmic on the same machine. This started happening with Lucid, which I just installed. It is pretty much a deal-breaker, and it renders the system unusable.

[Jury (jhome)]

I have reproduced the problem since 8.10
Today on 10.04
HW: IBM ThinkPad Z60t
X server crashes and then restarts into "recovery" mode

syslog:
May 3 23:12:46 thinkpad kernel: [34494.224038] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
May 3 23:12:46 thinkpad kernel: [34494.224054] render error detected, EIR: 0x00000000
May 3 23:12:46 thinkpad kernel: [34494.225204] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 5606169 at 5606145)
May 3 23:12:47 thinkpad gnome-session[1395]: WARNING: Detected that screensaver has left the bus
May 3 23:12:47 thinkpad pulseaudio[10049]: pid.c: Stale PID file, overwriting.
May 3 23:12:48 thinkpad pulseaudio[10049]: main.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-LdQ8I
May 3 23:12:48 thinkpad acpid: client 900[0:0] has disconnected
May 3 23:12:48 thinkpad acpid: client connected from 10056[0:0]
May 3 23:12:48 thinkpad acpid: 1 client rule loaded
May 3 23:12:48 thinkpad pulseaudio[10061]: pid.c: Daemon already running.
May 3 23:12:49 thinkpad kernel: [34496.778063] __ratelimit: 12 callbacks suppressed
May 3 23:12:49 thinkpad kernel: [34496.778069] rumus[10033]: segfault at c ip 0071895f sp bfe5c450 error 4 in libqt-mt.so.3.3.8[1a8000+6ed000]
May 3 23:12:49 thinkpad gdm-binary[786]: WARNING: GdmDisplay: display lasted 2,298922 seconds
May 3 23:12:49 thinkpad acpid: client 10056[0:0] has disconnected
May 3 23:12:49 thinkpad acpid: client connected from 10067[0:0]
May 3 23:12:49 thinkpad acpid: 1 client rule loaded
May 3 23:12:50 thinkpad gdm-binary[786]: WARNING: GdmDisplay: display lasted 0,550053 seconds
May 3 23:12:50 thinkpad acpid: client 10067[0:0] has disconnected
May 3 23:12:50 thinkpad acpid: client connected from 10074[0:0]
May 3 23:12:50 thinkpad acpid: 1 client rule loaded

[Jury (jhome)]

Additional finding:
The problem is reproduced after laptop has put in hibernate mode and then woken.
If the laptop was not in a hibernate mode the problem is not reproduced.

[keith (krl105)]

Same problem here on my Dell Dimension 2400

May 9 23:55:56 keith-desktop kernel: [ 3280.856007] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
May 9 23:55:56 keith-desktop kernel: [ 3280.856020] render error detected, EIR: 0x00000000
May 9 23:55:56 keith-desktop kernel: [ 3280.856820] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 236818 at 236817)
May 9 23:55:58 keith-desktop kernel: [ 3282.768021] [drm:i915_gem_idle] *ERROR* hardware wedged
May 9 23:55:58 keith-desktop gnome-session[921]: WARNING: Detected that screensaver has left the bus
May 9 23:55:58 keith-desktop acpid: client 892[0:0] has disconnected
May 9 23:55:58 keith-desktop acpid: client connected from 1847[0:0]
May 9 23:55:58 keith-desktop acpid: 1 client rule loaded

May 9 23:55:58 keith-desktop pulseaudio[1843]: pid.c: Stale PID file, overwriting.
May 9 23:55:58 keith-desktop pulseaudio[1843]: main.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-u5jSAyqotH: Connection refused
May 9 23:55:59 keith-desktop pulseaudio[1853]: pid.c: Daemon already running.
May 9 23:55:59 keith-desktop kernel: [ 3284.420849] [drm:i915_gem_entervt_ioctl] *ERROR* Reenabling wedged hardware, good luck
May 9 23:55:59 keith-desktop kernel: [ 3284.748009] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
May 9 23:55:59 keith-desktop kernel: [ 3284.748018] render error detected, EIR: 0x00000000
May 9 23:55:59 keith-desktop kernel: [ 3284.748722] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 236820 at 236817)
May 9 23:56:02 keith-desktop kernel: [ 3286.792013] [drm:i915_gem_idle] *ERROR* hardware wedged
May 9 23:56:02 keith-desktop acpid: client 1847[0:0] has disconnected
May 9 23:56:02 keith-desktop acpid: client connected from 1858[0:0]
May 9 23:56:02 keith-desktop acpid: 1 client rule loaded

May 9 23:56:03 keith-desktop kernel: [ 3287.846455] [drm:i915_gem_entervt_ioctl] *ERROR* Reenabling wedged hardware, good luck
May 9 23:56:03 keith-desktop kernel: [ 3288.172009] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
May 9 23:56:03 keith-desktop kernel: [ 3288.172018] render error detected, EIR: 0x00000000
May 9 23:56:03 keith-desktop kernel: [ 3288.172721] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 236822 at 236817)
May 9 23:56:05 keith-desktop kernel: [ 3290.216014] [drm:i915_gem_idle] *ERROR* hardware wedged
May 9 23:56:05 keith-desktop acpid: client 1858[0:0] has disconnected
May 9 23:56:05 keith-desktop acpid: client connected from 1866[0:0]
May 9 23:56:05 keith-desktop acpid: 1 client rule loaded

May 9 23:56:06 keith-desktop kernel: [ 3291.274812] [drm:i915_gem_entervt_ioctl] *ERROR* Reenabling wedged hardware, good luck
May 9 23:56:06 keith-desktop kernel: [ 3291.600009] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
May 9 23:56:06 keith-desktop kernel: [ 3291.600018] render error detected, EIR: 0x00000000
May 9 23:56:06 keith-desktop kernel: [ 3291.600714] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns...

[Noccy (noccy)]

Same problem with with the 2.6.34 kernel from kernel.ubuntu.com. Display locks up randomly, text mode flashes a few times, and then gives me a message about Ubuntu running in low graphics mode. Only solution to get X back up is to reboot.

Last time encountered was when I tried to launch OsmosDemo.

$ cat kern.log | grep -i i915
Jun 3 03:24:36 noccy-laptop kernel: [ 31.371500] i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
Jun 3 03:24:36 noccy-laptop kernel: [ 31.371515] i915 0000:00:02.0: setting latency timer to 64
Jun 3 03:24:36 noccy-laptop kernel: [ 32.098461] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
Jun 3 03:49:12 noccy-laptop kernel: [ 1507.968078] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Jun 3 03:49:12 noccy-laptop kernel: [ 1507.968419] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 79853 at 79852)

$ uname -a
Linux noccy-laptop 2.6.34-020634-generic #020634 SMP Mon May 17 20:34:55 UTC 2010 i686 GNU/Linux

No errors in Xorg.log

[Noccy (noccy)]

It's repeatable using OsmosDemo on my Acer AspireOne

$ lspci
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GME Express Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)

[Noccy (noccy)]

After adding the PPA from https://launchpad.net/~ubuntu-x-swat/+archive/x-updates and upgrading at least OsmosDemo launches without any lockups, so this seems to have fixed the problem for me.

[tomato paste (tomatopa)]

Not sure if my bug belongs as part of #507504 or #555573 -
I can reproduce the 'Hangcheck timer elapsed... GPU hung' message easily and reliably.
also getting the
 .. drm:i915_gem_idle] *ERROR* hardware wedged messages in the kern.log file
Environment : fresh install of 10.04 LTS, intel 915 video.

To make the crash happen :
Go to system->preferences->screen saver and select 'ant spotlight'
or 'GL Slideshow'. This PC will crash within 3 seconds reliably, over& over, as many times as I try.

To make crashes much less frequent :
Same menu, quickly before the ant starts revolving, select 'gl matrix' Floating Ubuntu or hyper-torus for the saver.
Crashes will still happen, just not constantly

[Christian (christian-bley2)]

when i begin to play "Alien Arena" this error happens:

my kernel.log sais:
"kernel: [115407.680041] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
kernel: [115407.680055] render error detected, EIR: 0x00000000
 kernel: [115407.680091] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 16246926 at 16246920)"

uname -a:
"Linux xxxxxxx@xxxx-xxxx 2.6.32-22-generic #36-Ubuntu SMP Thu Jun 3 19:31:57 UTC 2010 x86_64 GNU/Linux"

lsb_release -a:
"No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 10.04 LTS
Release: 10.04
Codename: lucid"

[sergio (sermoja)]

I installed the game 'Alien Arena'. When clicked play button, GDM seemed to crash and I had to enter into a terminal to shutdown and restart the computer.
Below is a log file transcription.
Thanks!

Jul 7 19:46:08 user-laptop kernel: [ 6519.672063] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung

Jul 7 19:46:08 user-laptop kernel: [ 6519.672075] render error detected, EIR: 0x00000000

Jul 7 19:46:08 user-laptop kernel: [ 6519.672100] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 1913123 at 1913118)

Jul 7 19:46:12 user-laptop kernel: [ 6523.312085] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung

Jul 7 19:46:12 user-laptop kernel: [ 6523.312094] render error detected, EIR: 0x00000000

Jul 7 19:46:12 user-laptop kernel: [ 6523.312296] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 1913125 at 1913118)

Jul 7 19:46:13 user-laptop kernel: [ 6524.600072] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung

Jul 7 19:46:13 user-laptop kernel: [ 6524.600080] render error detected, EIR: 0x00000000

Jul 7 19:46:13 user-laptop kernel: [ 6524.600111] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 1913126 at 1913118)

Jul 7 19:46:15 user-laptop kernel: [ 6526.452099] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung

Jul 7 19:46:15 user-laptop kernel: [ 6526.452108] render error detected, EIR: 0x00000000

Jul 7 19:46:15 user-laptop kernel: [ 6526.452142] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 1913131 at 1913118)

Jul 7 19:46:15 user-laptop kernel: [ 6526.776062] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung

Jul 7 19:46:15 user-laptop kernel: [ 6526.776070] render error detected, EIR: 0x00000000

Jul 7 19:46:15 user-laptop kernel: [ 6526.776247] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 1913133 at 1913118)

Jul 7 19:46:16 user-laptop kernel: [ 6527.108116] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung

Jul 7 19:46:16 user-laptop kernel: [ 6527.108124] render error detected, EIR: 0x00000000

Jul 7 19:46:16 user-laptop kernel: [ 6527.108163] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 1913135 at 1913118)

Jul 7 19:46:17 user-laptop kernel: [ 6528.412112] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung

[...]
Jul 7 19:55:18 user-laptop kernel: Kernel logging (proc) stopped.

[Andrey Levkovich (levkovich-a)]

uname -a
Linux artem 2.6.32-24-generic #39-Ubuntu SMP Wed Jul 28 06:07:29 UTC 2010 i686 GNU/Linux

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 10.04.1 LTS
Release: 10.04
Codename: lucid

same error:
Nov 29 13:30:30 artem kernel: [16347.687400] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Nov 29 13:30:30 artem kernel: [16347.687408] render error detected, EIR: 0x00000000
Nov 29 13:30:30 artem kernel: [16347.687528] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 4558966 at 4558931)
Nov 29 13:30:31 artem kernel: [16348.207279] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Nov 29 13:30:31 artem kernel: [16348.207288] render error detected, EIR: 0x00000000
Nov 29 13:30:31 artem kernel: [16348.207324] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 4558967 at 4558931)

[Plaristote (sexymimi64)]

Same problem here, on my work's laptop.

jackson@jackson:~$ uname -a
Linux jackson 2.6.35-28-generic #50-Ubuntu SMP Fri Mar 18 19:00:26 UTC 2011 i686 GNU/Linux

Also another one in the ubuntu-fr forum haz it.

[Denis (link011)]

same for me
2.6.38-8-generic #42-Ubuntu SMP

[avhation (hall-37honorwood)]

Me too, ever since I installed Lucid. Hardware runs Win XP faultlessly. RAM passes Memtest 86+ OK. Relevant extract from Syslog below. I was using Firefox, iGoogle and eBay at the time. I hope this will help someone to solve this major nuisance.

Jun 18 19:17:01 henry-desktop CRON[1368]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Jun 18 20:17:01 henry-desktop CRON[1430]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Jun 18 21:17:01 henry-desktop CRON[1489]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Jun 18 21:28:34 henry-desktop kernel: [ 9396.632014] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Jun 18 21:28:34 henry-desktop kernel: [ 9396.632030] render error detected, EIR: 0x00000000
Jun 18 21:28:34 henry-desktop kernel: [ 9396.633117] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 143927 at 143923)
Jun 18 21:28:36 henry-desktop kernel: [ 9398.544018] [drm:i915_gem_idle] *ERROR* hardware wedged
Jun 18 21:28:36 henry-desktop gnome-session[971]: WARNING: Detected that screensaver has left the bus
Jun 18 21:28:37 henry-desktop acpid: client 850[0:0] has disconnected
Jun 18 21:28:37 henry-desktop acpid: client connected from 1565[0:0]
Jun 18 21:28:37 henry-desktop acpid: 1 client rule loaded
Jun 18 21:28:37 henry-desktop pulseaudio[1561]: pid.c: Stale PID file, overwriting.
Jun 18 21:28:37 henry-desktop pulseaudio[1561]: main.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-lysrGLPuDp: Connection refused
Jun 18 21:28:38 henry-desktop kernel: [ 9400.351255] [drm:i915_gem_entervt_ioctl] *ERROR* Reenabling wedged hardware, good luck
Jun 18 21:28:38 henry-desktop kernel: [ 9400.684014] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Jun 18 21:28:38 henry-desktop kernel: [ 9400.684022] render error detected, EIR: 0x00000000
Jun 18 21:28:38 henry-desktop kernel: [ 9400.684860] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 143929 at 143923)
Jun 18 21:28:41 henry-desktop kernel: [ 9402.736015] [drm:i915_gem_idle] *ERROR* hardware wedged
Jun 18 21:28:41 henry-desktop acpid: client 1565[0:0] has disconnected
Jun 18 21:28:41 henry-desktop acpid: client connected from 1575[0:0]
Jun 18 21:28:41 henry-desktop acpid: 1 client rule loaded
Jun 18 21:28:42 henry-desktop kernel: [ 9403.855450] [drm:i915_gem_entervt_ioctl] *ERROR* Reenabling wedged hardware, good luck
Jun 18 21:28:42 henry-desktop kernel: [ 9404.196022] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Jun 18 21:28:42 henry-desktop kernel: [ 9404.196032] render error detected, EIR: 0x00000000
Jun 18 21:28:42 henry-desktop kernel: [ 9404.196885] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 143931 at 143923)
Jun 18 21:28:44 henry-desktop kernel: [ 9406.248016] [drm:i915_gem_idle] *ERROR* hardware wedged
Jun 18 21:28:44 henry-desktop acpid: client 1575[0:0] has disconnected
Jun 18 21:28:44 henry-desktop acpid: client connected from 1583[0:0]
Jun 18 21:28:44 henry-desktop acpid: 1 client rule loaded
Jun 18 21:28:45 henry-desktop ker...

[avhation (hall-37honorwood)]

I have now learned a little more. I apologise if, as an amateur enthusiast, I am not invited to comment here. I reinstalled Lucid for the nth time yesterday. My chipset according to Memtest 86+ is an Intel i845E/G/PE/GE (ECC: disabled)/ FSB:132MHz. Having read about the general answer to the crash symptoms for Intel 8XX chipsets I have removed (using Software Centre) Compiz, turned the screensaver to Blank Screen,and turned off all power saving options. Initially the system ran well. The crashes started at some after I had set F-Spot as my screensaver and tweeked the power saver settings. The last crash I think coincided with opening a second Firefox window. Fingers crossed again now for an improvement.

[Joseph Coffland (jcoffland)]

This is not a duplicate of #477256. That bug is about the i855 driver and does not mention the i915 driver or the "[drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung" syslog entry.

This is the exact message I see in the syslog:

Oct 8 01:56:20 localhost kernel: [175362.180132] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Oct 8 01:56:20 localhost kernel: [175362.180146] render error detected, EIR: 0x00000000
Oct 8 01:56:20 localhost kernel: [175362.180172] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 14505009 at 14505008)

After this the GPU does not work. I can restart X but only get a blank screen with a mouse on it.

Anyone find any workarounds for this? One might be to use the vesa driver but that is less than ideal.

[Jarda Benkovsky (edheldil001)]

Similar bug has started to appear here sometime in November 2011. My system is:
Ubuntu 10.04.3
Linux 2.6.32-37-generic
Dell Optiplex 760

Symptoms:
 * the first occassions were with a blank screensaver + lock. I have returned after an hour to find that the screen is not blanked, it was even updating, but after moving a mouse it went blank and displayed password prompt as it should

 * now a new symptom happens frequently (twice or thrice a week at least), always when I am off the computer for several hours - the X restarts so when I come back, the GDM greeter is on. I have changed the screensaver to space images, might be the reason. Happened even soon after a reboot

# cat /sys/kernel/debug/dri/0/i915_error_state
Time: 1324408252 s 522411 us
EIR: 0x00000000
  PGTBL_ER: 0x00000000
  INSTPM: 0x00000000
  IPEIR: 0x00000000
  IPEHR: 0x01800002
  INSTDONE: 0xffffffff
  ACTHD: 0x03ac4014
  INSTPS: 0x8001e020
  INSTDONE1: 0xbfffffff

# lspci -vvnn

# lspci -vvnn
00:00.0 Host bridge [0600]: Intel Corporation 4 Series Chipset DRAM Controller [8086:2e10] (rev 03)
 Subsystem: Dell Device [1028:027f]
 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
 Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
 Latency: 0
 Capabilities: [e0] Vendor Specific Information <?>
 Kernel driver in use: agpgart-intel
 Kernel modules: intel-agp

00:02.0 VGA compatible controller [0300]: Intel Corporation 4 Series Chipset Integrated Graphics Controller [8086:2e12] (rev 03)
 Subsystem: Dell Device [1028:027f]
 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
 Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
 Latency: 0
 Interrupt: pin A routed to IRQ 33
 Region 0: Memory at fe800000 (64-bit, non-prefetchable) [size=4M]
 Region 2: Memory at d0000000 (64-bit, prefetchable) [size=256M]
 Region 4: I/O ports at ec90 [size=8]
 Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable+
  Address: fee0100c Data: 41c1
 Capabilities: [d0] Power Management version 2
  Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME-
 Kernel driver in use: i915
 Kernel modules: i915

00:02.1 Display controller [0380]: Intel Corporation 4 Series Chipset Integrated Graphics Controller [8086:2e13] (rev 03)
 Subsystem: Dell Device [1028:027f]
 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
 Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
 Latency: 0
 Region 0: Memory at fe700000 (64-bit, non-prefetchable) [size=1M]
 Capabilities: [d0] Power Management version 2
  Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:03.0 Communication controller [0780]: Intel Corporation 4 Series Chipset HECI Controller [8086:2e14] (rev 03)
 Subsystem: Dell Device [1028:027f]
 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Steppin...

[penalvch (penalvch)]

Arnd, thank you for reporting this bug and helping make Ubuntu better. Please execute the following command, as it will automatically gather debugging information, in a terminal:
apport-collect 507504

[Launchpad Janitor (janitor)]

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

[Kevin Brubeck Unhammer (unhammer)]

I think I may have this or something related on Xubuntu 12.04 LTS. It happened last Monday after browsing with Firefox for some hours IIRC. I did a kernel update from linux-image-3.2.0-29-generic:amd64 to linux-image-3.2.0-33-generic:amd64 the previous Thursday, so it might have been introduced then.

The mouse pointer was movable, everything else was still, clicking had no effect, keyboard had no effect (e.g. tried ctrl+alt+f1, I didn't know about alt+sysrq before now)

The laptop is a Thinkpad X220 with a hardware switch to turn off and on all radio (wifi, bluetooth, 3G) so I tried that, it had no effect. Then I tried ssh-ing into the machine, and apparantly network-manager was still running and had managed to connect after I switched wifi off and on again. From within ssh everything seemed just fine. I tried killing firefox and restarting lightdm, this had no effect though (how does one restart X in Xubuntu?).

I will collect more info if it happens again (just noticed https://help.ubuntu.com/community/DebuggingSystemCrash), but for now I've pasted the relevant bits from /var/log/syslog* at http://pastebin.ubuntu.com/1393943/ (all the way down to where I hit the radio switch)

[penalvch (penalvch)]

Kevin Brubeck Unhammer, if you have a bug in Ubuntu, could you please file a new report by executing the following in a terminal:
ubuntu-bug xorg

For more on this, please see the Ubuntu X.Org Team, Ubuntu Bug Control, and Ubuntu Bug Squad article:
https://wiki.ubuntu.com/Bugs/BestPractices#X.2BAC8-Reporting.Focus_on_One_Issue

and Ubuntu Community article:
https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette

When opening up the new report, please feel free to subscribe me to it.

Please note, not filing a new report may delay your problem being addressed as quickly as possible.

Thank you for your understanding.