update-manager starts gnome-power-manager when it's not wanted
Binary package hint: update-manager
update-manager sends dbus messages to gnome-power-manager asking it not to suspend during the update. This causes gnome-power-manager to start if it isn't running already, but I don't want gnome-power-manager running because all it does is disable DPMS (see #231397).
Please can it check whether gnome-power-manager is running before sending it dbus messages.