Comment 18 for bug 1205384

Would it be accepted, that lxlock were changed not to use dm-tool at all, but other means such as slock which does not run on any daemon and would not listen to dbus signal anyway?

Another option, if dm-tool is used, would be to use the command "dm-tool switch-to-greeter" preceded by some command to lock session. In greeter, if you login the user that has a session running already, password will be prompted again by the screen saver or the session locker utility.