Some Fn key didnot work on ASUS K46CM, Need help

[ferry2]

Hello i am new user on linux distro, i have tried Ubuntu 13.04 64 Bit and also Lubuntu after try to install this i found some problem regarding
Fn key that didnot work on this two distro
this is the issue i have

• Fn + F5(Brigtness Up)
• Fn + F6(Brightness Down)
• Fn + F9(Disabel TouchPad)

anway this is my Notebook specification

ASUS K46CM

• RAM 4Gb
• Nvidia GT 635M 2GB and also integrated graphics HD4000
• Core i3

I've been looking for some solutions on google and some headed to the ubuntu forums but from the solution given none of this works on my laptop.
so i try to made ​​this thread to find a solution that actually works on my laptop.
Thank you and i am really excited to use Ubuntu for my primary OS.:) Cheers

[ferry2]

Up Up
anybody can help..