[Bug 110394] Skylake GPU HANG while gstreamer H264 vaapi encoding from MJPEG vaapi decode on drm-tip

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110394

--- Comment #7 from Andy Nicholas <andy.nicholas at shield.ai> ---
(In reply to Andy Nicholas from comment #5)
> Created attachment 143921 [details]
> 3rd GPU hang on same hardware using same test loop. Within 2 iterations.
> 
> This time my transcoder script seemed to have terminated... but actually
> didn't -- it was just asleep, waiting. The transcoder script RESUMED RUNNING
> after 14 minutes and completed the transcoding task. No further information
> was emitted into the dmesg log.
> 
> This is bad because our usage case can't tolerate a "hang" where the
> transcoder does not emit anything for 14 minutes... or even a few
> milliseconds.

Btw, while the transcoder was "hung" I was able to login and use the kernel as
normal using SSH so most of the kernel subsystems seemed to be performing
normally. The GPU was definitely not functioning properly.

Btw, This is using Ubuntu server so we do not have Xserver running.

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