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I installed ubuntu 12.10 alongside win7 ultimate on my lenovo ultrabook U410, but the problem is I get 6 hours with win7 while only 3.30 hours on Ubuntu. I installed PowerTop but It does not provide any guide to kill the processes(by pressing various keys)!! It just gives the insight of processes..nothin more..!! I also installed laptopMode, set the enable laptop mode=1 but still i m stuck..!! Plz Guide... thnks..