This bug, or one very similar, also affects me. The freeze only occurs when using dash.
The mouse pointer still moves but nothing responds and the rest of the screen including clock, pannel, dash, all programs, etc are frozen. HOWEVER, Ctr+Alt+F1-7 still work to open other tty's. The quick workaround that works for me is to kill compiz like so. 1) Press Ctrl+Alt+F3 2) Log in to a terminal 3) type ps -A | grep compiz and make note of the process id (pid) 4) type kill (pid) replacing (pid) with the process id of compiz for your session eg. kill 1274 5) Press Ctrl+Alt+F7 You should be returned to your desktop which will be missing a panel, dash, etc. These will automatically reload in a few moments. P.S. The following command could be substituted for steps 2 and 3. I have made it into a bash script called killcompiz sudo kill $(ps -A | grep compiz | awk '{ print $1 }') -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/999645 Title: Freeze with unity 3d (12.04) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/999645/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp