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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?

fiok
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1 Answers1

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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