Does running this command from a terminal successfully suspend your computer? Does putting `sh -c "dbus-send --print-reply --system --dest=org.freedesktop.DeviceKit.Power /org/freedesktop/DeviceKit/Power org.freedesktop.DeviceKit.Power.Suspend"` in compiz (strip the backticks) work?
Does running this command from a terminal successfully suspend your computer? Does putting `sh -c "dbus-send --print-reply --system --dest= org.freedesktop .DeviceKit. Power /org/freedeskto p/DeviceKit/ Power org.freedesktop .DeviceKit. Power.Suspend" ` in compiz (strip the backticks) work?