gnome3 and gnome-power-manager

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https://bbs.archlinux.org – Hello,I have gnome3 and gnome-power-manager installed to two different systems. In both cases I can not get the power manager to suspend the computers. Maybe I don't understand what power manager is supposed to do? My interpretation is that if I check the box that says put computer to sleep after xx minutes that it will automatically suspend after xx time period of inactivity. Is that not the case? Did I miss something in the setup? This is what I did1. install the basic system2. install gnome3. install gnome-power-managerI see that power management is running in the gnome-session-propert (HowTos)