Can you please try booting with radeon.new_pll=0 added to the kernel command line in grub to see if the issue still exists with that option?
** Changed in: xserver-xorg-video-ati (Ubuntu) Status: Confirmed => Incomplete -- [RV515] Screen is shaking few minutes after boot https://bugs.launchpad.net/bugs/543265 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs