Acer Intel Notebook brightness control (D270 series and maybe other)

If you have problem controlling your Acer Netbook brightness when using Backtrack or Kali or Ubuntu or other Debian derivative distro, you can try this :

1. Open your Shell or Terminal

2. Type this on Terminal :

setpci -s 00:02.0 f4.b=10

3. Or you can add that to your rc.local