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 Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
