[Bug 111385] (Only partly recoverable) GPU hangs in (multi-context) SynMark HDRBloom & Multithread tests with Iris driver

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111385

--- Comment #27 from Eero Tamminen <eero.t.tamminen at intel.com> ---
(In reply to Eero Tamminen from comment #12)
> Last night there was a system hang in HdrBloom with Iris on BDW GT2 when
> using latest Mesa and drm-tip kernel git version
...
(In reply to Eero Tamminen from comment #25)
> Situation seems to have improved during weekend.  I don't see anymore rest
> of the tests after HdrBloom & Multithread failing, and even those 2 tests
> now succeed (with lower FPS), although there are GPU hangs.  Hopefully that
> was real improvement and not just random / luck.

It was random.  On SkullCanyon, Multithread test and tests following that
failed, until machine hanged completely (still showing Multithread frame on
screen), with latest drm-tip kernel & 3D stack.

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