*** This bug is a duplicate of bug 1280300 *** https://bugs.launchpad.net/bugs/1280300
Same observed here with 15.10. I consider this as a security concern, too. You may try: gsettings set org.gnome.desktop.screensaver ubuntu-lock-on-suspend 'true' It worked for me Kind regards -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/830348 Title: desktop contents briefly visible on resume from suspend before lock dialog To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/830348/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs