I'm unable to turn off backlight of my keyboard. I've tried every solutions available on the internet including xset, etc. But nothing seem to work on AsusFX503. I've Ubuntu 18.04 installed. Please help.

  • 2
    Try echo 0 | sudo tee /sys/class/leds/asus::kbd_backlight/brightness
    – Kulfy
    Apr 15 '19 at 20:29
  • tee: '/sys/class/leds/asus::kbd_backlight/brightness': No such file or directory 0 Apr 19 '19 at 10:52
  • 1
    What is the output of ls -l /sys/class/leds/?
    – Kulfy
    Apr 19 '19 at 18:21
  • @Kulfy sorry for late reply. output Apr 26 '19 at 12:06
  • And what about ls -l /sys/devices/platform?
    – Kulfy
    Apr 26 '19 at 12:47

I found the rogauracore package on Github here: https://github.com/wroberts/rogauracore. On my G531GT it allowed me to control the color of the backlight, which included turning it off. I can't easily dim the backlight, but I can choose a color which is less bright, effectively dimming it, although not as convenient.

It's not the real solution to the problem (which probably involves some kernel update), but a very useful workaround with the added bonus that you can actually control the RGB on the backlight too.

  • Unfortunately it didn't work from me. which colour did you use? I've red backlight, tried some dim hex values but didn't work :). Jul 26 '19 at 9:52
  • Does rogauracore black work for you? My keyboard is RGB so it makes a bit more sense to control the color. Sorry if it didn't work for you :(
    – mkreisel
    Jul 26 '19 at 13:06
  • Worked for me. Thanks
    – code13
    Jan 18 '20 at 10:50

It was fixed in kernel 5.0, check xev and try to press this combos.

  • nothing happening. The data updates but not when I press "fn + arrow_down", which is how keyboard backlight can be changed. Thank You.. Sep 6 '19 at 20:05
  • 1
    What kernel version do you have? Run uname -a, and what kind of data are you talking about? Since kernel 5.0+ fn+arrow combos should map to XF86KbdBrightnessUp and down Sep 6 '19 at 23:18
  • 1
    Yea! Thanks. I upgraded to kernel 5 from 4. It solved the issue. Dec 7 '19 at 8:00

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