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Fedora 17 heat and battery

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linux-howto

http://forums.fedoraforum.org – HEllo all, In fedora 17, the battery time is becoming very low(1 hr) ,in windows it is 2.5 hrs. Also the exhaust fan will be always running .Some told me that fedora uses both the graphic cards , so disable one to reduce load. How to disable or uninsatll a graphic card (possibly nvidia) .My laptop is DELL XPS L502X. Also plz suggest how to improve battery life and reduce heat. (HowTos)