[Bug 84958] [BDW] Screen stop at certain frame when running Synmark2 cases while FPS is updating

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84958

--- Comment #10 from Chris Wilson <chris at chris-wilson.co.uk> ---
About the only thing that change are the timestamp and pixel counters, along
with VF instancing. They don't seem to be of any relevance (and can be LRIed
back to 0 without fixing anything).

The oddest is reg 0x5524 which is an OA register that becomes fixed to 1.0
after using mesa. I haven't been able to LRI that register to see if it is the
culprit, or work out how it gets set in the first place.

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