In relation to the comments on this answer, I am curious about the following:

If one does not get a keycode output in the xev Event Tester when pressing Fn + Key, are there ways to determine whether obtaining a keycode for the combination is possible?

As far as I have understood, some keyboards have the possible options hardcoded, while others might be softcoded. I would like to know if there is some way to determine if one or the other is the case, without decontructing the physical keyboard.


Use showkey --scancodes at a text (non-X) console.

My laptop doesn't have a different scancode when using Fn, so I resorted to using the windows key instead.

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    Thank you! I used a virtual terminal (Ctrl+Alt+f2) and learned something. – Rasmus Sep 3 '19 at 13:40

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