7.0RC4: GLX/DRI problems

[Tilman Sauerbeck]

Hi,
I've got the following problem with 7.0RC4 (though it was present with
RC3 as well):

I'm using DRI with a Matrox g450, DRM kernel modules from CVS HEAD as of
last week.

When I run glxgears, it freezes X for a second every 7 seconds or so,
ie the location of the mouse cursor isn't properly updated and window
rendering is delayed.
It's not reproducable all the time though, but I cannot see what it's
influenced by.

The 'gears' program (also from MesaDemos) is working without any
problems all the time though.

Unreal Tournament is working alright as well, whereas Quake 3 is so slow
that it cannot even play the intro clips etc right.

Direct Rendering is enabled though, and I cannot see anything funky in
glxinfo either.

Any hints on how to track this down? I don't know what else there this I
can check/try.

Thanks,
Tilman
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