I have a Lenovo ThinkPad L412 with a non-overclocked i5 2nd gen, 4GB RAM, and a Radeon HDv545. Whenever I use Windows and have possibly battery intensive applications running, the battery still lasts a minimum of 2.5 hours.
However, I've noticed that when I switch to Linux (I'm currently using openSUSE with power management enabled) I notice a rapid drain in battery life. Linux automatically enables Bluetooth and I must make sure it's always off when I boot my system. Does Linux enable any other features I must turn off to conserve battery?
Why does Linux drain my battery and how do I overcome this?