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.
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.