[Bug 36608] Corrupt GL rendering

https://bugs.freedesktop.org/show_bug.cgi?id=36608

--- Comment #4 from Michel Dänzer michel@daenzer.net 2011-08-19 00:30:40 PDT --- (In reply to comment #3)

I don't know though if 3D hardware acceleration is fully working: I get no particular warning/error in dmesg or Xorg.0.log, but glxgears FPS seem very low to me (~85 FPS).

As the glxgears output explains, it synchronizes to the refresh rate by default, so that may be okay. Check the glxinfo output, and maybe try

vblank_mode=0 glxgears

to disable synchronization.