[Bug 78922] Display corruption

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78922

--- Comment #11 from Chris Wilson <chris at chris-wilson.co.uk> ---
The speckle looks to be a blend failure. It looks to be in the compositor as
the pattern seems to have some of the overdrawn content, which is why I suspect
that mesa is involved. At first I thought the speckle would be a cache
invalidate issue, but it doesn't actually seem to be wide enough for a
cacheline issue - so it may be a bad EU, sampler or killpixel instruction.

When you tried 9.2.6, what changed? Presumably the glxgears returned to normal?

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