Comment 36 for bug 868889

In my case, I have found this bug to be connected to vsync.

After looking in details on this webpage (http://forum.compiz.org/viewtopic.php?t=12048), I made different trials while enabling vsync from nvidia-settings or from compiz-settings-manager or from both.

So far, I have only enabled compiz-settings-manager vsync mode and set the display refresh rate at 60Hz (the value of my computer) while turning-off the automatic detection of the refresh rate in ccsm.

When I encounter (more and more regularly) the problem of screen refresh reportednin this bug, I start the benchmark (found in ccsm) in console mode. The problem immediately disappears (but at the expense of high cpu consumption).