I'm a little new in Linux operative systems and I've been trying to make my laptop Vaio vpcee23el with Elementary OS (Loki) dim its backlight. I could found a way to make it in this question Intel graphics change brightness using the @Phoenix answer:

He explained that should add

sudo sh -c "echo x > /sys/class/backlight/intel_backlight/brightness"
sudo sh -c "echo y > /sys/class/backlight/acpi_video0/brightness" # (optional)
sudo sh -c "echo y > /sys/class/backlight/acpi_video1/brightness" # (optional)

where 0 <= x <= 4882 and 0 <= y <= 10.

in /etc/rc.local file. When I tryed it, it worked, in fact, it worked even just using sudo sh -c "echo x > /sys/class/backlight/intel_backlight/brightness" directly in terminal.

But I would like to know if there is any way to make this work along the fn key so I don't have to type it on terminal every time i want to change my laptop brightness. s

  • The solution suggested by Darius worked for me. I have a Dell Vostro 15 with Intel integrated graphics. Thanks a ton. Commented Dec 26, 2017 at 11:07

1 Answer 1


I found this: answer

and this worked for me from his answer: solved the problem

P.S: I have asus too, but I got X550JX model.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.