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When I had windows on my machine, it worked approximately 3 hours when charged from battery, but now in ubuntu it is working 1 hour even I installed some power-saving software, such as "pm-poversave and jupiter". How can I solve this problem

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You could use tlp. See this question. –  Khurshid Alam Aug 10 '13 at 13:02
    
The culprit might be your video card. Have a look at this thread and see if it leads you to any further conclusions. –  DrA7 Aug 10 '13 at 14:30

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