Had enough running time now to consider the issue closed, my best guess is that it must have been some kind of firmware issue that was fixed by the newer linux-firmware package, since I seem to be the only one that was affected, changing the status of the bug.
** Changed in: xserver-xorg-video-ati (Ubuntu) Status: Confirmed => Fix Committed ** Changed in: xserver-xorg-video-ati (Ubuntu) Status: Fix Committed => Fix Released -- Xorg freeze drm radeon 'Faild to schedule IB' https://bugs.launchpad.net/bugs/588940 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