*** This bug is a duplicate of bug 946899 ***
https://bugs.launchpad.net/bugs/946899
i have got the same probleme on ubuntu 12.10:
Mar 25 13:54:23 c1326161 kernel: [18165.952563] [drm:i915_hangcheck_hung]
*ERROR* Hangcheck timer elapsed...
GPU hung
Mar 25 13:54:23 c1326161 kernel: [18165.952789] [drm] Enabling RC6 states: RC6
on, RC6p off, RC6pp off
Mar 25 13:54:23 c1326161 kernel: [18166.171934] [drm:drm_edid_block_valid]
*ERROR* EDID checksum is invalid,
remainder is 128
Mar 25 13:54:23 c1326161 kernel: [18166.171938] Raw EDID:
Mar 25 13:54:23 c1326161 kernel: [18166.171940] ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff
Mar 25 13:54:23 c1326161 kernel: [18166.171942] ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff
Mar 25 13:54:23 c1326161 kernel: [18166.171943] ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff
Mar 25 13:54:23 c1326161 kernel: [18166.171945] ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff
Mar 25 13:54:23 c1326161 kernel: [18166.171946] ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff
Mar 25 13:54:23 c1326161 kernel: [18166.171947] ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff
Mar 25 13:54:23 c1326161 kernel: [18166.171948] ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff
Mar 25 13:54:23 c1326161 kernel: [18166.171950] ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff
Mar 25 13:54:23 c1326161 kernel: [18166.198870] [drm:drm_edid_block_valid]
*ERROR* EDID checksum is invalid,
remainder is 128
Mar 25 14:04:32 c1326161 kernel: [18774.387065] [drm:i915_hangcheck_hung]
*ERROR* Hangcheck timer elapsed... GPU hung
Mar 25 14:04:32 c1326161 gnome-session[1916]: WARNING: App 'compiz.desktop'
respawning too quickly
Mar 25 14:04:32 c1326161 gnome-session[1916]: CRITICAL: We failed, but the fail
whale is dead. Sorry....
Mar 25 14:04:32 c1326161 kernel: [18774.582231] [drm:drm_edid_block_valid]
*ERROR* EDID checksum is invalid, remainder is 128
Mar 25 14:04:32 c1326161 kernel: [18774.582235] Raw EDID:
Mar 25 14:04:32 c1326161 kernel: [18774.582237] ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff
Mar 25 14:04:32 c1326161 kernel: [18774.582238] ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff
Mar 25 14:04:32 c1326161 kernel: [18774.582239] ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff
Mar 25 14:04:32 c1326161 kernel: [18774.582240] ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff
Mar 25 14:04:32 c1326161 kernel: [18774.582240] ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff
Mar 25 14:04:32 c1326161 kernel: [18774.582241] ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff
Mar 25 14:04:32 c1326161 kernel: [18774.582242] ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff
Mar 25 14:04:32 c1326161 kernel: [18774.582243] ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff
Mar 25 14:04:32 c1326161 kernel: [18774.609164] [drm:drm_edid_block_valid]
*ERROR* EDID checksum is invalid, remainder is 128
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https://bugs.launchpad.net/bugs/1093650
Title:
[drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
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