Does anyone know if it is possible to control the keyboard backlight on the ASUS G53SW? (it should be the same as the G73 if that helps). I realize that freebsd FreeBSD is not linux but if it helps I can control the backlight in linux v3.0+ by writing a number to a file under /sys.
# cat /sys/class/leds/asus::kbd_backlight/max_brightness > /sys/class/leds/asus::kbd_backlight/brightness