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Do they make some difference? I read in Ubuntu wiki that actually it has good power configuration management out of box.

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Have a look please… – Qasim Jul 18 '13 at 2:02

No. pm-powersave now takes care of that functionality. The relevant files are:


Also, see the comprehensive answer here: Is "laptop-mode-tools" still relevant for 12.04 and the 3.x kernels?

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If you want further improvement to power consumption install TLP via its PPA from its far more effective and implements true power saving profile to your laptop.

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Be careful with TLP, in my case it did something funky with the system and made it very slow. Also, I have not seen any objective tests showing that TLP is any better or worse then the default on Ubuntu 13.04. – asp Jul 18 '13 at 16:14

I have it in different laptops from AMD to latest Haswell CPU and AMD netbooks and never faced an issue. Also tests have been done by quite a few sites that have testified to TLP's effectiveness regarding power savings.

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