This is not an issue with the Openbox keyboard shortcut. Running the command "lxsession-default -lock" does not lock the screen, despite sending the "lock" command to the session manager through dbus.
$ lxsession-default lock lock Launching lock manager <From dbus-monitor> method call sender=:1.40 -> dest=org.lxde.SessionManager serial=2 path=/org/lxde/SessionManager; interface=org.lxde.SessionManager; member=SessionLaunch string "lock" string "" The fault appears to be with the lxsession program. I checked the source code for lxsession, and could not find a handler for the "lock" argument. ** Branch linked: lp:~lubuntu-dev/lxde/lxsession -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1286686 Title: Lock screen shortcut is not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxsession/+bug/1286686/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs