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Why is battery backup while using Fedora 16 very poor?

asked 2012-02-01 20:49:33 -0500

Pankaj gravatar image

updated 2012-02-01 22:42:00 -0500

FranciscoD_ gravatar image

I have switched from windows 7 to fedora 16 recently on my hp pavilion dv6 6119 tx laptop and my battery backup has decreased from 4 hour 30 minutes to 1 hour 30 minutes. Please suggest me some solutions to this problem.

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Please post queries as questions in the future @Pankaj. Also refrain from using bold, punctuations etc. unnecessarily. I've updated your question.

FranciscoD_ gravatar imageFranciscoD_ ( 2012-02-01 22:42:57 -0500 )edit

Are we talking about a UPS (battery backup) or a laptop battery?

randomuser gravatar imagerandomuser ( 2012-02-02 00:22:33 -0500 )edit

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answered 2012-02-02 06:06:35 -0500

lzap gravatar image

Expect the power regression bug to be fixed in the next Fedora version. This will help for sure! And there is still room for optimalizations.

https://lkml.org/lkml/2011/11/10/467

Biggest issues are screen (dim), cpu (try to minimize it) and hdd (spin it down if possible). I highly recommend to install tuned daemon and configure it for the best savings. See here (this guide is for Fedora 15 but tuned chapters are valid for F16):

http://docs.fedoraproject.org/en-US/Fedora/15/html/PowerManagementGuide/index.html

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answered 2012-02-27 18:17:55 -0500

gman gravatar image

My dell vostro v131 runs 6:20 hours on battery using fedora 16 after some minor tweaks: http://linux-gman.blogspot.com/2012/02/improving-battery-live-on-dell-vostro.html YMMV

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answered 2012-02-01 22:01:55 -0500

FranciscoD_ gravatar image

Try:

yum install powertop

Go to the tunables tab and see what can be done.

Switch off services you don't need:

systemctl disable <servicename>.service

etc.

Are you sure it decreased from 4.5 hours to 1.5 hours? I suggest you retake the measurement.

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answered 2012-03-09 18:51:43 -0500

Pankaj gravatar image

yes i am sue it has reduced to 1.5 hrs i want to use fedora 16, but due to battery problem i have not started using it... plz suggest me

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Asked: 2012-02-01 20:49:33 -0500

Seen: 1,234 times

Last updated: Mar 09 '12