I remembered that I had some kernel parameters set, so I turned off the CLUTTER_VBLANK fix and experimented a bit. I used gnome-shell to suspend, then resume and log in repeatedly until gnome-shell locked up.
(default ubuntu kernel parameters) = bug on 7th try radeon.audio=1 = bug on 1st try radeon.audio=1 noautogroup = bug on 2nd try radeon.audio=1 radeon.dpm=1 noautogroup = no bug yet (15 tries) I'll keep the machine like this and update if it bugs again. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1442311 Title: Ubuntu 14.04 blank screen after wakeup from sleep To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1442311/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
