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I really like Ubuntu, and I want to work with it always instead of windows. But the problem I find is that the battery runs out very fast (< 2 hours) when I use Ubuntu. It would have been great if I could get like 3 - 4 hours of battery life.

My windows provides me 4.5 - 5 hours. Is there any way to increase battery backup?

I have tried to disable my AMD Radeon graphics by adding radeon to blacklist. But still there is a lot of heating.

My laptop is a Compaq Presario CQ43. And I'm running Ubuntu Studio 12.04.

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Anything starts by searching askubuntu for similar topics. See the "related questions" on the right hand side of this page ;) Examples: askubuntu.com/questions/98972/… askubuntu.com/questions/137659/… askubuntu.com/questions/225126/… or something like this: smackerelofopinion.blogspot.nl/2012/01/… –  Rinzwind Mar 10 '13 at 9:57
    
askubuntu.com/questions/285434/… –  Qasim May 29 '13 at 15:24
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3 Answers

There is a pretty good guide on some of the things you can do on Hak5 episode 1225, it is mostly assuming you have an SSD installed, however the section on powertop, laptop-mode-tools, thinkfan and indicator-cpufreq should be relevant

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Make sure you have updated drivers for your hardware. Generally the brightness of the laptop consumes the battery more. In Ubuntu if the brightness is not increased or decreased you can refer here . Moreover try updatating the kernel.

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you can use TLP: is an advanced power management command line tool for Linux that tries to apply these settings / tweaks for you automatically, depending on your Linux distribution and hardware

http://www.webupd8.org/2013/04/improve-power-usage-battery-life-in.html

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askubuntu.com/questions/285434/… –  Qasim May 29 '13 at 15:24
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