Clobbered display when switching users.

[Erik P. Olsen]

Running F12 with integrated ATI Radion HD 4200 GPU and 
mesa-dri-drivers-experimental.

When I switch to another user everything works nicely but when I switch back to 
the original user the display becomes all clobbered, i.e. wrong colours and 
figures and letters are difficult to read. I can just manage to log out and back 
again after which the display is back to normal.

Is this something I can correct or should I file a bug report?

-- 
Cheers,
Erik.