(In reply to comment #81)
> and applied the following patch on top of it.
>
> commit f49c3cacd25ffb78ccfff49b001ba89375044145
> Author: Chris Wilson <email address hidden>
> 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.
(In reply to comment #81) 8ccfff49b001ba8 9375044145
> and applied the following patch on top of it.
>
> commit f49c3cacd25ffb7
> Author: Chris Wilson <email address hidden>
> 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.freedeskto p.org/mesa/ drm/commit/ ?id=fdda97007b1 dbf95beb16a0e35 10fd36c89e8c33
Paul, can you update libdrm and see if the bug returns?