the Asus ZenBook Flip 14 (UX461UN) has two handy little buttons on the side of the chassis for adjusting volume.
Unfortunately in Fedora 27 they don't seem to be recognised at all. I ran xev to figure out their key ids, but there's just nothing when I press them.
What I did find was a directory
which might be helpful, I guess? But I'm a bit of a noob, so... where do I go from here?