Same problem around here. Disabling Sync to Vblank wont work for me.
The bug has appeared with 2 variants: After long time of inactivity (everything freezes, except the mouse) and after suspending the notebook by closing the lid (black screen, mouse still can be seen and moves)
I'm running an M880 RAdeon HD 6650M on ubuntu 12.04
OS still works, since CTRL+ALT+F1 works fine. However pressing CTRL+ALT+F7 return you to the stuck screen
Same problem around here. Disabling Sync to Vblank wont work for me.
The bug has appeared with 2 variants: After long time of inactivity (everything freezes, except the mouse) and after suspending the notebook by closing the lid (black screen, mouse still can be seen and moves)
I'm running an M880 RAdeon HD 6650M on ubuntu 12.04
OS still works, since CTRL+ALT+F1 works fine. However pressing CTRL+ALT+F7 return you to the stuck screen