first of all thanks egghead3, you saved my day with your solution
now i have besides the brightness one big problem: VGA-output
( I need it for a presentation :/ )
do I have to add it like hdmi:
VendorName "NVIDIA Corporation"
Option "ConnectedMonitor" "??" #name?
because there is no output in the gnome/nvidia-settings and 'xrandr -q'
shows me just the laptop-screen (at least =) )