I too am experiencing this bug. I can type my password in blindly for now, and Ctrl-Alt-F1 followed by Ctrl-Alt-F7 fixes it temporarily.
ATI Mobility Radeon HD 3450 on a Dell Studio 15.
Bug is new in Karmic. intrepid and Jaunty did not have this bug.
I too am experiencing this bug. I can type my password in blindly for now, and Ctrl-Alt-F1 followed by Ctrl-Alt-F7 fixes it temporarily.
ATI Mobility Radeon HD 3450 on a Dell Studio 15.
Bug is new in Karmic. intrepid and Jaunty did not have this bug.