[Bug 106262] [BXT] GPU HANG: ecode 9:2:0xbefffffe, in Main Thread [4018], reason: Hang on bsd ring,

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106262

--- Comment #6 from Patrick Beaulieu <patrick.beaulieu at avigilon.com> ---
I can test DRM-tip on a small number of units, but given the frequency of
occurrence on 20 units, it would take about 6months running on 1-2 units to
really have any confidence the issue is gone.

On the 20 unit pool we only are able to run release-candidate images, so
drm-tip is not stable enough to be appropriate. On the 20 units, we will begin
testing with kernel 4.12 (yocto rocko 2.4.2) and ensure the bxt i915 firmwares
are loaded to see if the problem goes away.
What is the official intel-gfx position on enable_rc6=0 and/or max_cstate=1 ?
Should we be using these if the goal is maximum stability?

Are there any particular commits in drm-tip that could explain this issue that
we should consider backporting into 4.10 or 4.12?

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