Can you try booting with radeon.new_pll=0 added to your kernel command line to see if it fixes the issue? Hold shift while you are booting, select the kernel and press e to edit it, then go down to the line which has quiet splash on it and add radeon.new_pll=0 to the end, and press control+x to boot it.
** Changed in: xserver-xorg-video-ati (Ubuntu) Importance: Undecided => High ** Changed in: xserver-xorg-video-ati (Ubuntu) Status: Confirmed => Incomplete -- [RV530] screen flickers in lucid lynx https://bugs.launchpad.net/bugs/543045 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp