Public bug reported:
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
card.
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
error.
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: 12.04 nividia opengl ubuntu unity xorg
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https://bugs.launchpad.net/bugs/1032187
Title:
OpenGL rendering issues
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