[ubuntu] maxamize battery life on hp G60-471NR

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http://ubuntuforums.org – was wondering if anyone had some advice to increase total battery run time (aside from just turning down screen brightens). the 2 things a i notice are the wi-fi button is always orange instead of blue. in windows it's normally blue but if i prese it it turns orange and turns of the wi-fi card, but in ubuntu its always orange. also i noticed that the mic is always on but i don't know how to disable it. i purchaced a 12 cell battery about 3 months ago, and now i get about 6 1/2 hours in windows but only about 5 1/2 hours in ubuntu. any suggestions would be appreciated. I'm u (Hardware)