Laptop-mode is said to be one of the energy efficiency boosters for Linux. Now, sources I found say that to activate you need to:
- install laptop-mode-tools
LAPTOP_MODE_ENABLED=true(if it doesn't exist; otherwise make sure that it's set to true) inside
However, even after doing this laptop mode is not running (I have it set up in
/etc/laptop-mode/laptop-mode.conf to be always on):
~$ cat /proc/sys/vm/laptop_mode 0
Does anyone know how can I enable laptop-mode?
It is mentioned here that the Ubuntu package is "crippled". Is it really the case that Ubuntu doesn't allow you to enter this mode on AC? If so, why?
Edit - it seems that laptop-mode is not necessary any more since Ubuntu 12.04, according to this question.