On Thu, Dec 25, 2008 at 10:56:59PM +0100, "J.Ke?ler" wrote: > > So my question is, what can I do to improve the working time and what > can I check if something is not working as it should. > eg. if there is some "special-debian-power" package or some general > power saving settings which I'm not aware of. try laptop-mode-tools -- paolo