Can't assign a command for FN key

Question

I've an ASUS F555L whith Ubuntu-GNOME 16.10 and I've a problem with the Fn key.

I'm trying to set the brightness UP/DOWN with the key Fn+F5 and Fn+F6. I solved the brightness issue setting the command with the Key Shotcuts in Setting> Keyboard > Custum Shortcuts in this way:

name: Brightness Up 
command: xdotool key --clearmodifiers XF86MonBrightnessUp

and

name: Brightness Down 
command: xdotool key --clearmodifiers XF86MonBrightnessDown

When I tried to set these Shortcuts with the key Fn nothing happened, like the Fn key doesn't exist or work.

I tried to see with acpi_listen if the keys work but with Fn+F5 or Fn+F6 there isn't an output.

But it doesn't make sense because with Fn+F10 the output is

button/mute MUTE 00000080 00000000 K

How can i make work Fn+F5/F6 ? Is there a command on the terminal to enable the Fn key?

<Fn><F5> is a key in its own right. The <Fn> key works at the hardware/firmware level. — AlexP, Nov 28 '16 at 14:57
Use xev from terminal, and check your keypresses for their labels/ID. — negusp, Nov 28 '16 at 15:10
Related possible duplicate: https://askubuntu.com/questions/866437/function-keys-do-not-work-brightness-sound-ubuntu-16-04 — Elder Geek, Nov 28 '17 at 15:20

score 1 · Answer 1 · answered Sep 30 '22 at 17:48

1

You don't need to try to define Custom Key Shortcuts. You can do it directly on follow way on Ubuntu, Linux Mint and Debian.

xdotool key XF86MonBrightnessUp
xdotool key XF86MonBrightnessDown

answered Sep 30 '22 at 17:48

Alfred.37

79

Can't assign a command for FN key

1 Answers1