I have this problem on my ATI Mobility Radeon 9000 which is caused by compiz loading with gnome. I have been hitting ALT+F2 then typing in "metacity --replace", then hitting enter (all without seeing what's happening). That just runs that command in a terminal which switches from compiz to metacity.
I think we are waiting for some drivers to go through (and not just for ATI). Here is a forum post with a similar problem - http://ubuntuforums.org/showthread.php?t=845236&page=2 - I linked to page 2 which has some suggested explanations. -- Blank screen with compiz activated https://bugs.launchpad.net/bugs/247034 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