I have an HP laptop. It is a 64 bit machine. But I have installed 32 bit Ubuntu 12.04 presently. My problem is, once the battery is fully charged and start using Ubuntu it gets drained completely within less than two hours. The interesting fact is that, I don't run any heavy tasks during this time. Watching a movie or surfing Internet causing such quick battery drain.
I have Windows also in my machine on which i get almost three and a half hours of battery backup. Can someone help me? Is this normal with Ubuntu? Or is it because of the installation of 32 bit OS on 64 bit machine?