Powertop is a very nice tool. I used it to tune my laptop shortly after installing Ubuntu Hardy (A lenovo R61e), and vastly improved my battery life. edit: Thi

Powertop is a very nice tool. I used it to tune my laptop shortly after installing Ubuntu Hardy (A lenovo R61e), and vastly improved my battery life. edit: This site is filled with goodies if you're into reducing power consumption on your linux box.