Linux On My Samsung

By default in unity only fn+left/right (volume) works.
After installing:
samsung-tools
samsung-backlight
easy-slow-down-menager
also
fn+f3 - camera on/of
fn+f5 - backlight on/of
fn+f6 - sound on/of
fn+f7 - bluetooth on/of
fn+f8 - fun slow/fast/normal
fn+f9 - wireless on/of

but fn+up/down dont work. The notice appear and only notice is highlighted when pressing.

Anyway great works team with the rest.

Does that have Nvidia video?
http://www.voria.org/forum/viewtopic.php?f=4&t=834

it use nvidia optimus technology but i dont use any https://github.com/MrMEEE/bumblebee.
So currently it use intel graphic card.

PS
If i change in energy managment settings to some ofther brightness (darker) and then press Fn+up/down button it goes back to full brightness. Also in random 2-30min time parts the screen can flash with full brigtness when its brigtness is reduced.

I have samsung RC530 with NVIDIA OPTIMUS Technology (Intel HD Video + NVIDIA 550M) and I have the same problem.

Somebody set up the backlight?