I had the same problem but with the intel driver, disabling KMS (i915.modeset=0) solved it
-- [i945gm] gnome-power-manager and blanking (removal of bodges) https://bugs.launchpad.net/bugs/421347 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel 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
