I have this bug too.
Gentoo 64bit
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA
controller])
Subsystem: Samsung Electronics Co Ltd Device c0a0
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at f5c00000 (64-bit, non-prefetchable) [size=4M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
I/O ports at e000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel 3.8.0 gentoo-sources
I try patch a24a11e6b4e96bca817f854e0ffcce75d3eddd13, but nothing change.
Mar 31 15:14:37 localhost kernel: [64379.291736] [drm:i915_hangcheck_hung]
*ERROR* Hangcheck timer elapsed... GPU hung
Mar 31 15:14:37 localhost kernel: [64379.291742] [drm] capturing error event;
look for more information in /debug/dri/0/i915_error_state
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https://bugs.launchpad.net/bugs/1041790
Title:
[snb] GPU lockup IPEHR: 0x0b160001 IPEHR: 0x0b140001, workaround
i915.semaphores=0
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