[Bug 507504] Re: display freezes, [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung

[Lepy]

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

-- 
display freezes, [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
https://bugs.launchpad.net/bugs/507504
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