Re: drm i915 hangs on heavy io load

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Hi Dave, hi Chris,

thanks for your answers.

On Di, 23 Okt 2012, Dave Airlie wrote:
> Does booting with i915.i915_enable_rc6=0 help?

No,booted with that, it happened again on a completely idle
system (well, I believe completely idle, I was doing the
dishes ;-)

[12437.995026] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
[12437.995034] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state
[12438.000213] [drm:init_ring_common] *ERROR* failed to set render ring head to zero ctl 00000000 head 5ee06f14 tail 00000000 start 00003000
[12438.054894] [drm:init_ring_common] *ERROR* render ring initialization failed ctl 0001f001 head 5ee06f14 tail 00000000 start 00003000
[12439.583064] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
[12439.583176] [drm:i915_reset] *ERROR* GPU hanging too fast, declaring wedged!
[12439.583182] [drm:i915_reset] *ERROR* Failed to reset chip.

New output see here:
http://www.logic.at/people/preining/i915_error_state.gz

> http://cgit.freedesktop.org/~danvet/drm/commit/?h=ilk-wa-pile&id=0d5fed2de763b49bb1a90140758153481f043757
> is the missing ingredient.

I am compiling a kernel with this patch based on current git now.
Should I still use the above kernel cmd argument (i915...rc6=0)
or try without it?

Best wishes

Norbert
------------------------------------------------------------------------
Norbert Preining            preining@{jaist.ac.jp, logic.at, debian.org}
JAIST, Japan                                 TeX Live & Debian Developer
DSA: 0x09C5B094   fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 B094
------------------------------------------------------------------------
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