After trying unsuccessfully to use all the fixes I found online, I finally managed it to fix this problem myself today:
1. Install Gnome Screensaver sudo apt-get install gnome-screensaver 2. Replace Light Locker with Gnome Screen Saver Do it first for all new users sudo vi /etc/xdg/autostart/light-locker.desktop Change the line from: Exec=light-locker to: Exec=gnome-screensaver and then do the same for every existing user su <username> vi ~/.config/autostart/light-locker.desktop 3. Hide light-locker-settings from menu for all users sudo vi /usr/share/applications/light-locker-settings.desktop Add the line: Hidden=true Hope that helps everyone affected by his bug until Light Locker is actually production ready enough to warrant it's place in a LTS release. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1357090 Title: Black screen on resume in Xubuntu 14.04.1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1357090/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs