This (not locking when pressing Ctrl+Alt+L) still happens with a clean install of Ubuntu 15.04 and the same workaround (adding gnome- screensaver to the autostart programs) resolves the issue.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1389650 Title: Lock screen not working with Gnome 3 (gnome-shell) and Ubuntu 14.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1389650/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs