[Intel-gfx] i915 hangups on Sandybridge linux3.0

[Dmitry Kazakov]

Hi!

Could you help me?
I have a bug here. All the graphics hangs randomly for 0.5-10 seconds every
5-10 minutes. After these hangups I can find following messages in my
logfiles.

[  742.530710] i915 GPIOF: SDA stuck high!
[  742.582519] [drm] GMBUS timed out, falling back to bit banging on pin 7
[i915 gmbus dpd]
[  742.582555] i915 GPIOF: SDA stuck high!
[  742.634371] [drm] GMBUS timed out, falling back to bit banging on pin 7
[i915 gmbus dpd]
[  742.634406] i915 GPIOF: SDA stuck high!
[  742.686223] [drm] GMBUS timed out, falling back to bit banging on pin 7
[i915 gmbus dpd]
[  742.686258] i915 GPIOF: SDA stuck high!
[  773.338580] [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid,
remainder is 131
[  773.338584] Raw EDID:
[  773.338587] <3>00 ff ff ff ff ff ff 00 4c 2d 0f 01 39 31 4a 4d
........L-..91JM
[  773.338590] <3>05 0f 01 03 80 26 1e 78 2a ee 95 a3 54 4c 99 26
.....&.x*...TL.&
[  773.338592] <3>0f 50 54 bf ef 80 81 80 71 ff ff ff ff ff ff ff
.PT.....q.......
[  773.338595] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
................
[  773.338597] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
................
[  773.338599] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
................
[  773.338602] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
................
[  773.338604] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
................


Is it a known bug? I can send you any information needed.

I have the following opensuse packages installed:

xorg-x11-driver-video-intel-legacy 2.9.1-10.2
xorg-x11-server 7.6_1.9.3-32.1
kernel-desktop 3.0.0-2.1
libdrm 2.4.26-13.2

Full dmesg and Xorg logs are attached

I tried to disable/enable Relaxed fencing, no help.

-- 
Dmitry Kazakov
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