I use an Asus E202S notebook.

I can't change my brightness using Fn key combinations.

When I use xbacklight, it returns

no outputs have backlight properties

In my /sys/class/backlight directory I have two symbolic links:


I tried some suggestion with xrandr and changing pci but to no avail.

I have created an xorg.conf in /etc/X11:

Section "Device" 
Identifier "Card0" 
Driver  "intel" 
Option  "Backlight"  "intel_backlight" 

Yet still no change.

I am a complete newbie, so please help accordingly.


I had a similar problem so I made this script.

clone this repo and paste the script into the /bin directory. then make the script executable by using the following script.

sudo chmod +x /bin/backlight.sh

here is the repository for the script:

git clone https://github.com/el-beth/backlight.sh.git

in your case, change the third line of the script from:

BRIGHTNESS_DIRECTORY=$(cd /sys/class/backlight/* && pwd);


BRIGHTNESS_DIRECTORY=$(cd /sys/class/backlight/intel-backlight && pwd);

for more info read the README.md file in the cloned backlight.sh directory.

  • the third line is not BRIGHTNESS_DIRECTORY=$(cd /sys/class/backlight/* && pwd); i found it to be MAX_BRIGHTNESS=$(cat /sys/class/backlight/*/max_brightness); – Mahir Jul 23 '17 at 14:24

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