Comment 182 for bug 745608

(In reply to comment #82)
> (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.
>
> 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?

I applied the commit you mentioned on top of

    libdrm (2.4.40-1~deb7u2) sid; urgency=low

and rebuilt the package. Unfortunately I think there is no difference. The glyph corruption is still gone but it is also still slow, so swrast still might be used.

How can I check, what is used, without `glxinfo` installed? I could not spot anything useful in `/var/log/Xorg.0.log`.