Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

We cannot disable it using the BIOS, because Turbo gets turned off as well as a side effect (what a crappy BIOS!). I am looking for a simple command line tool for Ubuntu 12.04 LTS Server that can do this.

I know on Windows, if you set the Power Options to High Performance, SpeedStep is disabled, but how can I do this on Ubuntu Linux using a command line application?


share|improve this question
up vote 3 down vote accepted

To disable SpeedStep, you would run cpufrequtils. It should already be installed on your system if you're running a Gnome desktop. If not you can install it by clicking below

Once you install it, you would run

 sudo cpufreq-selector -g performance

However, running the CPU at full speed, may cause it to shutdown after a few minutes.

sudo cpufreq-selector -f <specify speed>

To verify your CPU speed, use the "cat" utility:

cat /proc/cpuinfo
share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.