[ubuntu] Ridiculously low battery life

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http://ubuntuforums.org – Hi all, I have a problem with my laptop battery and ubuntu karmic, turns out battery life is VERY low, If I get an hour and a half of battery life Im lucky1!!! any help regarding this??? In windows I have like 5 hours or more so I guess its a configuration issue. thanks in advance! Specs: Ubuntu Karmic 64 bit Hp Pavilion DV4-2013la AMD Athlon II Dual Core 3GB of RAM Kernel 2.6.31-20 (Hardware)