You need to call the following methods, all of which are under the org.gnome.PowerManager namespace:
CanSuspend CanHibernate to determine whether the system can suspend or hibernate, and Suspend Hibernate to actually perform the actions. Daniel has more experience of dbus implementation stuff than me, so may be able to offer more advice. -- Logout dialog signals gdm to perform p-m actions https://launchpad.net/bugs/43872 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
