Comment 11 for bug 555573

Hi,

I am having the same issue on my Toshiba Tecra M5 laptop. The output from my kern.log when this happens is:

May 7 21:30:51 ccc017400 kernel: [41191.508136] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
May 7 21:30:51 ccc017400 kernel: [41191.508151] render errMay 7 21:30:51 ccc017400 kernel: [41191.508136] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
May 7 21:30:51 ccc017400 kernel: [41191.508151] render error detected, EIR: 0x00000000
May 7 21:30:51 ccc017400 kernel: [41191.508192] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 2207294 at 2207291)
May 7 21:30:52 ccc017400 kernel: [41192.724110] wlan0: deauthenticating from 00:1f:33:7a:8c:b2 by local choice (reason=3)
May 7 21:49:44 ccc017400 kernel: Kernel logging (proc) stopped.
May 7 21:50:41 ccc017400 kernel: imklog 4.2.0, log source = /proc/kmsg started.or detected, EIR: 0x00000000
May 7 21:30:51 ccc017400 kernel: [41191.508192] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 2207294 at 2207291)
May 7 21:30:52 ccc017400 kernel: [41192.724110] wlan0: deauthenticating from 00:1f:33:7a:8c:b2 by local choice (reason=3)
May 7 21:49:44 ccc017400 kernel: Kernel logging (proc) stopped.
May 7 21:50:41 ccc017400 kernel: imklog 4.2.0, log source = /proc/kmsg started.

My output from lspci -vvnn:

00:02.1 Display controller [0380]: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller [8086:27a6] (rev 03)
 Subsystem: Toshiba America Info Systems Device [1179:0004]
 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-
 Region 0: Memory at 8a200000 (32-bit, non-prefetchable) [disabled] [size=512K]
 Capabilities: <access denied>

The tail end of my Xorg.0.log is:

(II) UXA(0): Driver registered support for the following operations:
(II) solid
(II) copy
(II) composite (RENDER acceleration)
(==) intel(0): Backing store disabled
(==) intel(0): Silken mouse enabled
(II) intel(0): Initializing HW Cursor
(II) intel(0): No memory allocations

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.

 ddxSigGiveUp: Closing log

For me this appears to happen when my external monitor goes to standby mode. I will test this on the laptop display.