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[Bug 1032187] [NEW] OpenGL rendering issues


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I have a fully updated Ubuntu 12.04 x64 installation with Nvidia driver
302.17 enabled. The system contains an NVIDIA GeForce GTX 460 video

The problem I notice is that hardware acceleration stops some while
after log in. Immediately after reboot, GLXgears reports up to 3000 FPS.
After a few minutes to hours, hardware acceleration stops, which is e.g.
noticable by a sluggish response from the user interface. E.g. typing an
e-mail becomes impossible, since the letters appear too slow on the
screen. Re-running GLXgears in that case reports about 23 FPS.

I noticed that the problem does not occur if I keep GLXgears running on
the background. I can't find any unusual things in /var/log/xorg.0.log
that give hints about what is happening during the occurance of the

** Affects: compiz (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: 12.04 bot-comment nividia opengl ubuntu unity xorg
OpenGL rendering issues
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