caps led and brightness keys problem on dell vostro 3360 with opensuse 12.3 kernel 3.7

Hello!
I have strange quirks with caps led indicator and brightness keys: they work just after power on, in grub menu but they cease to work after operation system boots to graphical environment.
Caps lock itself is working fine: just indicator don't light up.
Brightness control itself is working also: I can configure brightness if I map other buttons. Just function keys don't work. 

I've tested it on opensuse 12.3 kde and gnome running 3.7 kernel: both are affected. 
Opensuse 12.2 with previous kernel didn't have such quirks.
Please, help to find out what cause this quirks.