Re-assigning to Unity Greeter since LightDM doesn't make any decisions on when the system can be rebooted. This might be related to bug 861171 where you previously couldn't shutdown when users were logged in. The problem lies somewhere in the PolicyKit policy and the ability of Unity Greeter to support needing authorization to shutdown.
Re-assigning to Unity Greeter since LightDM doesn't make any decisions on when the system can be rebooted. This might be related to bug 861171 where you previously couldn't shutdown when users were logged in. The problem lies somewhere in the PolicyKit policy and the ability of Unity Greeter to support needing authorization to shutdown.