Hello Chris Coulson. Are you sure there is no relation to bug "black screen after a few user switches" (#546578)? I thought there is a "fade" when at userswitch/logout.
See bug #546578: [..] [Workaround] 2 Blindfold: Unlock session by typing password, then press <Alt>-<F2> (call "Run ..." dialog), then type "xgamma -gamma 1.0" and hit <Enter> [Workaround] 3 Update gnome-screensaver to 2.30.0-0ubuntu2 or higher (yet in proposed repo). Those versions are compiled with disabled "fade on lock". [..] For me it looks a bit like this bug (look above): [..] xrandr --output LVDS1 --gamma 1:1:1 [..] Please review. thx -- Gamma values are not being set properly after a second fade out resulting in a black screen https://bugs.launchpad.net/bugs/555870 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-screensaver in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
