Adjust Screen Brightness Ubuntu 12.04 (Solution)

A solution for the power management problem in Ubuntu 12.04.

Problem: Brightness value is not getting saved and screen brightness will be back to 100% after reboot.

Solution:

Step1: Install xbacklight via terminal

sudo apt-get install xbacklight

Step2: Open startup applications

search startup applications

Step3: Add a startup program

In command box use   xbacklight -set `num`

where the num is percentage of your screen brightness.

Step4: Save and enjoy :)