I don’t know much about this kind of thing, but one thought that I had is that if you go to system settings -> keyboard -> keyboard. Is there any similar keyboard model that you can select that would essentially give you access to those keys?
I have not found any… I guess I would need to select: “Generic | Generic 121-key PC” as the keyboard model, which does not exist.
This is the keyboard: github.com/bluepylons/Boston
But it’s running QMK so one would have the same problem e.g.: with a 36-key keyboard which is programmed to send F13-F24 in some way…
Sorry, not sure what else to do. I couldn’t even find much information regarding a 121 key keyboard. I do wonder if there is a way to create a custom layout.