~ $ ls /sys/devices/platform/asus-nb-wmi/Ĭpufv driver_override input/ power/ hwmon/ modalias below is the kernel message filtered by 'asus' keyword: (i.e. My feeling is the kernel did not detected the corresponding WMI deviceīelow is the /sys/devices/platform/asus-nb-wmi/ contents: But pressing the same keys in Linux has no effect at all. In windows, I can adjust down its brightness until fully off. There are two function keys (reused the numerical keypad) which is to control the brightness of the backlight. After the system boot on, the backlight is always on.
The laptop is ASUS FX503vd, I tried several versions of Linux kernels (currently running one is the 4.17.1), but still have not managed to make the keyboard backlight control keys work. at first I thougt it was broken drivers because it would go off on windows log in.