[Bug 36326] [uxa 915GM] Characters sometimes have horizontal lines through them (glyph font corruption)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=36326

--- Comment #82 from Chris Wilson <chris at chris-wilson.co.uk> ---
(In reply to comment #81)
> and applied the following patch on top of it.
> 
>     commit f49c3cacd25ffb78ccfff49b001ba89375044145
>     Author: Chris Wilson <chris at chris-wilson.co.uk>
>     Date:   Thu Jan 10 19:14:21 2013 +0000
> 
>         intel: Throttle harder
> 
> Limited testing shows that the glyph corruption is gone. Unfortunately
> performance seems to be slower too. That means for example maximizing a
> window it does not happen instantly and I can see how it is redrawn. So
> basically the same behavior with `"DebugWait" "true"`, if I remember
> correctly.

What I realised later was that Sitosfe was hitting the bug in libdrm-intel that
was causing it to fallback to swrast. After applying that patch, you also need
libdrm-intel-2.4.41 or just
http://cgit.freedesktop.org/mesa/drm/commit/?id=fdda97007b1dbf95beb16a0e3510fd36c89e8c33

Paul, can you update libdrm and see if the bug returns?

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