Brightness keys UL30VT Ubuntu 10.04

Seen in ubuntuforums.org:
Scratch from myself: Brightness Key ASUS UL30VT

1. Make a file called brightness under /bin or /usr/bin and give an executed permission on it.
   this the code:
   
   
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   1. #!/bin/bash   
   2. export SEED=7   
   3. export BRIGHTNESS=`cat ~/.brightness`   
   4. case "$1" in   
   5.         "up")   
   6.                 export BRIGHTNESS=$[$BRIGHTNESS+$SEED];   
   7.         ;;   
   8.         "down")   
   9.                 export BRIGHTNESS=$[$BRIGHTNESS-$SEED];   
   10.         ;;   
   11.         *)   
   12.                 export BRIGHTNESS=1;   
   13.         ;;   
   14. esac   
   15. if [ "$BRIGHTNESS" -gt "0" ]; then   
   16.         echo $BRIGHTNESS > ~/.brightness   
   17.         sudo setpci -s 00:02.0 F4.B=$BRIGHTNESS   
   18. fi   
   19. if [ "$BRIGHTNESS" -lt "0" ]; then   
   20.         echo "This makes your screen off";   
   21. fi  

   #!/bin/bash  export SEED=7  export BRIGHTNESS=`cat ~/.brightness`  case "$1" in         "up")                 export BRIGHTNESS=$[$BRIGHTNESS+$SEED];         ;;         "down")                 export BRIGHTNESS=$[$BRIGHTNESS-$SEED];         ;;         *)                 export BRIGHTNESS=1;         ;;  esac  if [ "$BRIGHTNESS" -gt "0" ]; then         echo $BRIGHTNESS > ~/.brightness         sudo setpci -s 00:02.0 F4.B=$BRIGHTNESS  fi  if [ "$BRIGHTNESS" -lt "0" ]; then         echo "This makes your screen off";  fi

2. Then append brightness up to /etc/acpi/asus-brn-down.sh and brightness down to /etc/acpi/asus-brn-down.sh you could use this command
   sudo echo "brightness up" > /etc/acpi/asus-brn-up.sh
   sudo echo "brightness down" > /etc/acpi/asus-brn-down.sh
3. Then try to push your Fn+F5 again...
4. hahaha it's darked.

it's tested on ubuntu 10.04 LTS and ASUS UL30VT