[Bug 946899] Re: [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung

[Stan Schymanski]

Thanks, peterbo. Sorry, got confused. Of course, I'm running it on 
13.04, too. I have had these really weird crashes before (rebooting by 
itself) and they went away after one of the kernel upgrades, maybe even 
when upgrading from 12.10 to 13.04. Got the Hangcheck timer elapsed ones 
instead. That is, sometimes, when I return to my laptop, it is turned 
off even when I'm pretty sure I left it on, so maybe they have just been 
happening while idle. Now with the rc5 kernel I got the original crash 
(without error log) within hours again, so I got discouraged from trying 
any further. It's my work laptop, running dual monitors, and I really 
can't afford to experiment too much as I need it to run and do its job. 
I still can't believe that this is such a persistent bug (several 
bugs?). The Linux kernel used to be considered bomb-proof! Apparently 
its bugs, too...


On 21/08/13 16:04, peterbo wrote:
> schymans: I am running 13.04 so have not tested on 12.10. The crash you
> describe sounds a bit worse than the gpu hang but I obviously cannot be
> sure. My laptop never rebooted when the hang occurred though.
>
> I must admit that I had one hang with rc5 after 7 days, however the
> error message was different than the usual "Hangcheck timer elapsed". It
> was something with a "ring" - cannot remember any more of it. It
> happened after having dual monitors connected, suspending my laptop and
> then opening it without any monitors connected. Am on rc6 now and no
> problems yet.
>
> I cannot seem to force the hang, neither by running glxspheres, dragging
> windows fast across the desktop or playing with compiz effetcs/settings.
>

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Title:
  [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU
  hung

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