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So neither of my function keys appear to be working on my Asus laptop running Arch Linux. They're definitely not broken but they don't produce any output in xev. Like it doesn't register a keypress or anything.

Any ideas on what's wrong? And if so how can I fix this?

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  • Are these the keys that make some other double-labelled keys behave as F1-Fn, PgUp, Home, etc, or something else? It's unlikely that they generate any signals of their own if so. Commented Jan 8, 2019 at 23:29
  • That's probably by design, and there's nothing Linux, X11, or you can do about it. But try FN-Left; it may produce some key (XK_AudioLowerVolume ?) Commented Jan 8, 2019 at 23:33
  • Yeah I did some more testing; using the FN key in conjunction with other keys does produce output. So probably an electrical/hardware thing. Commented Jan 8, 2019 at 23:46
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    Related questions are unix.stackexchange.com/questions/331395 , unix.stackexchange.com/questions/467099 , and askubuntu.com/questions/787707 . Commented Jan 9, 2019 at 0:57

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It would appear that this is intended behavior, seeing as combinations of keys (Fn-F1, Fn-F2, etc.) do produce output in xev.

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