cpufreqd - How to configure you cpu speed

cpufreqd is a Linux daemon, that lets you control the speed of your CPU(s), depending on some variables, or also be set manually, you can set it to act dynamically or manually, you can define a lot of profiles and rules, which will control your CPU speed, the variables could be the temperature of your CPU, the amount of charge in your battery if AC is connected or not.

First thing you need to do is to install the daemon, in Debian / Ubuntu

    sudo aptitude install cpufreqd

Then you need to check if the desirable modules are loaded, so enter this command: