When I either: * xset dpms force off * switch vt * go from rhgb to gdm The laptop panel backlight seems to get really really dim or go off. So far, rebooting is the only way I've managed to reset the brightness. Intel 965 graphics. Rawhide from today.
Correct me if I am wrong, but I really think this is duplicate. *** This bug has been marked as a duplicate of 436556 ***