[Bug 102465] GPU hang (render ring)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102465

--- Comment #4 from Chris Wilson <chris at chris-wilson.co.uk> ---
Hmm, the video decoder is active at the time of the hang, so the forcewake
errors may well be due to an invalid batch. It then screws up the gpu such that
recovery is then impossible. Since the GPU is dead, the error state is devoid
of register information, definitely an interesting side-effect! The second hang
also points the finger at libva.

It's worth just sticking on drm-tip [https://cgit.freedesktop.org/drm-tip] just
to see if anything changes.

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