Having this problem as well on Ubuntu 10.04 and Mobility Radeon 4100
I can switch the first time from user A to user B... then if I switch back to user A I get a black screen with a mouse pointer but cannot do anything.
Having this problem as well on Ubuntu 10.04 and Mobility Radeon 4100
I can switch the first time from user A to user B... then if I switch back to user A I get a black screen with a mouse pointer but cannot do anything.