This sounds a lot like this problem, which is unfortunately a fundamental problem in the way the Damage extension is currently designed: http://lists.freedesktop.org/archives/xorg/2008-August/038022.html
The quick summary is that the X server sends damage events to compiz before sending the rendering commands to the hardware, and compiz can respond to those events before the damage has actually occurred. Some solutions have been proposed, but nothing has been implemented yet. -- Screen refresh problems with nvidia on intrepid https://bugs.launchpad.net/bugs/269904 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
