u can temp solve it by running on a terminal sudo apt-get install gnome-screensaver- sudo lightdm restart
then just wait for a new release of the package... warning: u cannot lock your computer after those commands..... -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-screensaver in Ubuntu. https://bugs.launchpad.net/bugs/869401 Title: gnome-screensaver fades the screen when mouse/keyboard input stops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-screensaver/+bug/869401/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs