The pmu_battery module was not built in kernels < 2.32 in Debian. gnome-power-manager previously used some different methods for battery detection. So it didn't depend on presence of pmu_battery. IIRC, the problem started showing up since gnome-power-manager version 2.28. Now it can not detect battery if the pmu_battery module is not loaded. Cheers, Onkar -- Passion - Some people climb mountains - others write Free software. Don't ask why - the reason is the same.