[gnome] devkit-power does not detect battery on ACER

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http://ubuntuforums.org – Hi, I've got this little issue with my GNOME-power-manager. I use Ubuntu 9.10 on my Acer TravelMate 8471. GPM does not detect the battery. It thinks the laptop runs on cable. devkit-power -d says: Device: /org/freedesktop/DeviceKit/Power/devices/battery_BAT0 native-path: (null) power supply: no [...] updated: Thu Jan 1 01:00:00 1970 but cat /proc/acpi/battery/BAT0/state shows: present: yes capacity state: ok [...] remaining capacity: 4570 mAh. [...] that means Something finds the battery. I need help. :) ~Fenrasa (Hardware)