Based on the comments on the upstream bug report (and their pointer to a couple kernel patches), I'm guessing this is actually a kernel drm bug. Refiling to the kernel.
** Package changed: xserver-xorg-video-ati (Ubuntu) => linux (Ubuntu) -- the display is not so smooth as before https://bugs.launchpad.net/bugs/586217 You received this bug notification because you are a member of Ubuntu-X, which is the registrant for xserver-xorg-driver-ati. _______________________________________________ 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
