More power consumed in ubuntu..
 

In Windows Battery back up is 4 hours where in ubuntu it is one and half hours.. Need i to change any power settings???

- What Ubuntu version?
- What kernel version? (Google for 'site:phoronix.com +kernel +power' to see what I mean)
- What Desktop Environment do you use?
- What services are running?
- Are the laptop-mode-tools and gnome-power-manager packages installed?

I have always had this problem for sometime now. I remember seeing this article. Linux power regression.

I think this was expected to be fixed in the newer kernel (3.1 or later I think). I am not sure about the status though.

Just as unspawn asked, what kernel version are you using?

Actually, just found this. It is not fixed in kernel 3.1 either.Linux 3.1 kernel power regression.