I have the same problem with a Radeon X1300 card and it can be fixed using the 'radeon.modeset=0' kernel option, so I guess it is related to KMS. The problem was not present in ubuntu 10.04 and started to show in 10.10. It is still present in 11.04 alpha 3.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/727979 Title: Screen flicker approx. every 30 seconds -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
