[Bug 110788] [CI][BAT] igt at i915_selftest@live_gtt - dmesg-warn - *ERROR* rcs0 workaround lost on load!

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110788

--- Comment #5 from Tvrtko Ursulin <tvrtko.ursulin at linux.intel.com> ---
I've seen this failure on trybot:
https://intel-gfx-ci.01.org/tree/drm-tip/Trybot_4424/fi-bxt-j4205/igt@i915_selftest@live_gtt.html

I notice one symptom which also ties both occurrences and comes a bit earlier
in the log:

  [drm:intel_modeset_init [i915]] 0 display pipe available.

This is definitely suspect and very strange.

Chris mentioned DMC and power context corruption as potential culprits in this
area. It seems to be turning out into something which could use a 1:1 session
with a BXT or GLK to hunt it down locally.

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