Description of problem: When switch-back to user who has compiz (Desktop Effects) enabled and gnome-screen-saver active, the screen (gnome-screen-saver) is completely blank but active (mouse pointer switch to "cursor" when move over the all white password text box) Version-Release number of selected component (if applicable): compiz-0.3.6-8.fc7 gnome-screensaver-2.18.0-13.fc7 fast-user-switch-applet-2.17.4-4.fc7 How reproducible: Always Steps to Reproduce: 1. Enable Desktop Effects 2. Enable "Lock screen after user change" (default enabled) in fast-user-switch-applet preferences 3. Switch to another user and come back to current (screen saver) user Actual results: "Usable" Blank Screen Expected results: Display unlock dialog as normal Additional info: With Desktop Effects disabled, things seems to work ok.
Not always i get a blank screen. It's random.
I've just seen the same symptom - an entirely white screen when I switched back to the primary user, who had compiz enabled.
Are you both using the nvidia proprietary driver? I've seen such scenario occur with the said driver, you can blindly type your user's password (and press 'Enter') to get back into your running session.
Im using nvidia proprietary driver and yes... i blindly type my password and screen back to reallity :) ("active" blank screen)...
You can close this bug then ;). It's not F-U-S-A's fault but an nvidia's driver bug.