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how to: gain some battery time on your laptop

so you have a laptop and you arent happy with the amount of time the laptop's battery gives you. the solution is a program called powertop that was originally written by some guys at intel. its home page is currently at https://01.org/powertop/ .

unlike the version 1 series , the version 2 series doesnt tell you how to implement the powersaving tips at bootup via the ui, only interactively toggling betwen good and bad.

so the solution is to run powertop from the command line:

powertop --calibrate --html=powertop.html

then view the results in your browser. there is a category called "Tuning" which tells you the commands to run.

Comments

to convert this into an init script is no longer possible. you will have to convert it into a systemd service file. i used these instructions.