Script for controlling the backlight in the ASUS G74SX

gistfile1.sh

#!/bin/bash
#
# Brightness script for the ASUS G74SX
#
# Arguments:
#   up   - increase brightness by 1
#   down - decrease brightness by 1
#

BRIGHTNESS=`cat /sys/devices/platform/asus-nb-wmi/leds/asus\:\:kbd_backlight/brightness`
MAX_BRIGHT=`cat /sys/devices/platform/asus-nb-wmi/leds/asus\:\:kbd_backlight/max_brightness`

# Try to recover brightness setting (since the `cat` seems to always return 0)
if [ -f /tmp/keyboard-brightness-ctl ]
then
  BRIGHTNESS=`cat /tmp/keyboard-brightness-ctl`
fi

case "$1" in
  up)
    BRIGHTNESS=$((BRIGHTNESS + 1))
    if [ $BRIGHTNESS -gt $MAX_BRIGHT ] ; then BRIGHTNESS=$MAX_BRIGHT ; fi
    echo $BRIGHTNESS > /tmp/keyboard-brightness-ctl
    echo $BRIGHTNESS > /sys/devices/platform/asus-nb-wmi/leds/asus\:\:kbd_backlight/brightness
  ;;

  down)
    BRIGHTNESS=$((BRIGHTNESS - 1))
    if [ $BRIGHTNESS -lt 0 ] ; then BRIGHTNESS=0 ; fi
    echo $BRIGHTNESS > /tmp/keyboard-brightness-ctl
    echo $BRIGHTNESS > /sys/devices/platform/asus-nb-wmi/leds/asus\:\:kbd_backlight/brightness
  ;;
esac

Thank you for this useful script. This was also valid for my ASUS G75VW too.

Thanks for the script! Works also with Asus UX301!

Anybody knows how to make it work without root permissions? I can change the owner of the "/sys/devices/platform/asus-nb-wmi/leds/asus::kbd_backlight/brightness" file, so that it wouldn't need root permission, but after restart the owner is still root...

I'm not sure how to use scripts, but I'm trying to change my rog strix from red backlight to a teal kind of color, like I did with my mouse. Do you people know how to help me do that? If it only works with scripts please explain it to me I've searched everywhere with no soultion

This is the code for the color of my mouse if you need it to help me, if you decide to. #00eaff