I'm unable to turn off the back light of the keyboard on my Asus FX503 laptop. I've tried every solutions available on the internet including xset, etc. Ubuntu 18.04 is installed. I've asked the same question on askubuntu but could not get any solution.
closed as off-topic by Rui F Ribeiro, Scott, Michael Homer, Kiwy, Jeff Schaller♦ May 10 at 13:30
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