Can anyone please tell me how to read the current state of the Fn-key in Linux? Is the current state of my keyboard in "Fn" mode or "normal" mode?
I know that I can find out by pressing the keys, but I rather know before I try out.

I just can't find any device or `/proc` or mapping or whatever, where I can find out if pressing `Fn`-`F1` produces a "sound off" (configured in my case) or triggers the F1-action bound on the `F1` key.