Comment 0 for bug 1584161

This is what we get in an unity session:

gdbus call --session --dest org.freedesktop.ScreenSaver --object-path /org/freedesktop/ScreenSaver --method org.freedesktop.GetActive
Error: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Interfaccia "org.freedesktop" inesistente sull'oggetto nel percorso /org/freedesktop/ScreenSaver

Side effect of this is bug #1415265