====== Power Management ======
A while ago I had a Lenovo X121e as a lightweight "surf anywhere" system. Because I also create content and I like my freedom, a tablet is not really an option for me. Because of (amongst other things) its advertised battery of up to 10 hours life I chose the X121e.

Of course the pre-delivered OS got replaced by Debian immediately. But what a shock, the battery only lasted about 3 hours! I was really disappointed, but then came across [[https://linrunner.de/tlp/index.html|TLP]], an advanced Power Management tool for Linux. Using TLP the battery lifetime more than doubled on the X121e. Still no 10 hours, but I can live with that. The amount of extra battery life is still dependent on your system, I think twice as much battery life is really not what TLP can do on every system ;-)

For the official installation instructions, please refer to the [[https://linrunner.de/tlp/installation/debian.html|official site]]. I just summarize the necessary Debian steps.

===== Installation =====
  - Make sure to use a sane and up-to-date [[misc:sources.list]]
  - Update your package lists: <code># apt update</code>
  - Last but no least, install the necessary packages: <code># apt install tlp tlp-rdw</code>

Done already! Enjoy your extra battery life.

~~DISCUSSION~~