This sounds a bit familiar: https://bugs.launchpad.net/ubuntu/+source/xfce4-power-manager/+bug/1303736 Could you see whether the same fix also works for you? It should definitely fix the issue with closing the lid, not sure what this "waiting for a longer period" problem is...
1. Add the Xubuntu Developers PPA to get the new packages: sudo add-apt-repository ppa:xubuntu-dev/ppa 2. Update package information and update the two crucial packages "sudo apt-get update && sudo apt-get install xfce4-power-manager light-locker-settings" 3. Restart your machine. 4. Open light-locker-settings and make sure "Lock on suspend" is enabled (if it already is, disable and then re-enable it, then hit "Apply"). 5. Close your laptop's lid. 6. You should be presented with the unlock screen upon opening the lid, login and you should see your desktop -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1320989 Title: black screen after longer screen lock To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/light-locker/+bug/1320989/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
