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Kernel Korner - Extending Battery Life with Laptop Mode

Issue 125

From Issue #125
September 2004

Sep 01, 2004  By Bart Samwel
 in
Economize on hard drive usage and extend your laptop's battery life.
Acknowledgements

Even though I don't have a laptop myself, I've had a lot of fun working on Laptop Mode. I want to acknowledge the efforts of the other guys who have contributed to Laptop Mode, including Jens Axboe, Micha Feigin, Andrew Morton and Kiko Piris. I also want to thank Jeroen Kruis for allowing me to abuse his brand-new PowerBook G4 for my experiments.

Resources for this article: /article/7647.

Bart Samwel initiated the effort to put Laptop Mode in Linux 2.6, even though he does not own a laptop. He studies Computer Science at Leiden University, The Netherlands, and earns his living writing proprietary software. He can be reached at bart@samwel.tk.

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Hi there, I found your blog

toplum's picture
Submitted by toplum (not verified) on Tue, 08/24/2010 - 02:19.

Hi there, I found your blog via Google while searching and your post looks very interesting for me

Don't leave it in direct

Anonymous's picture
Submitted by Anonymous on Tue, 05/25/2010 - 22:59.

Don't leave it in direct sunlight, areas where it will be exposed to extreme temperatures such as car trunks
-----------------------------
laptop asus

noatime is a superset of

Anonymous's picture
Submitted by Anonymous (not verified) on Thu, 11/26/2009 - 12:13.

noatime is a superset of nodiratime, btw.

use it in the right way

Anonymous's picture
Submitted by Anonymous (not verified) on Wed, 10/28/2009 - 22:36.

use your battery in the right,itis wrong to charging 12hours in the first time,go to the right site http://www.ltpbattery.us to change the laptop life

How To Extend Your Laptop's Battery Life

mrbattery's picture
Submitted by mrbattery (not verified) on Sun, 02/10/2008 - 02:23.

Use the correct recharging procedure for your laptop. Only use the power cord that came with your laptop or an authorized replacement.http://www.digi163.com/battery/
Follow correct maintenance for your battery when not in use. Don't leave it in direct sunlight, areas where it will be exposed to extreme temperatures such as car trunks.

Don't forget mount option "nodiratime"

Smedly McCharger's picture
Submitted by Smedly McCharger (not verified) on Sun, 06/15/2008 - 02:00.

This apparently was the missing piece to completely calm my laptop. With reiserfs or ext3, use mount options "noatime,nodiratime,notail". I had notail and noatime applied for years, but nodiratime stopped updates to directory inodes on reads. Glory!

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