i915_hangcheck_hung problem with 3.8-rc2+ (Linus's latest tree)

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On Wed, Jan 09, 2013 at 01:42:39PM +1000, Dave Airlie wrote:
> >> Hi all,
> >>
> >> I've hit this 3 times today on Linus's latest 3.8-rc2+ tree:
> >>
> >> [11868.414648] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
> >> [11868.414655] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state
> >> [11870.408342] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
> >> [11870.408412] [drm:i915_reset] *ERROR* GPU hanging too fast, declaring wedged!
> >> [11870.408414] [drm:i915_reset] *ERROR* Failed to reset chip.
> >> [11883.083225] gnome-shell[19396]: segfault at 218 ip 00007feef5f32333 sp 00007ffffc1dc930 error 4 in i965_dri.so[7feef5ecb000+d0000]
> >
> > I just hit this again.  And, as the kernel was asking for it, attached
> > is the i915_error_state file, compressed due to the size of it.
> >
> Welcome to sink hole that is
> https://bugs.freedesktop.org/show_bug.cgi?id=55984
> 
> 3 months and ticking, Intel guys are all running away from it saying
> they can't reproduce, everyone else on planet seems to reproduce quite
> easily.
> 
> Its generally considered a bug in the relocation/shrinker/no idea category,

Ugh, what a mess.

> Assuming you have an Ironlake machine which I'm going to guess you do.

I don't know, it's an old i5 machine that has never had any video
problems for many years now.  How do I tell?

thanks,

greg k-h


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