I found similar questions both here and on Super User. The closest question that comes to my question that I could find is Why can't I use two or more keyboards/mice at the same time on one computer?, but the question was focused on Windows (also, it dates from 2010, and things may have changed since).
I'm wondering whether I can hook up two keyboards simultaneously on my Linux machine. I've recently been working on my desktop again instead of my laptop, but my Cherry MC Blue keycaps actually wakes up my SO. (She's in a different room to me, but Blues are loud).
I could use a USB-PS/2 + USB setup if that would work and two USB keyboard input devices won't work.
I don't wish to simply replace my Blues, as I can use them during the day without bothering her and I rather like that keyboard.
For what it matters, I mostly use Ubuntu.
Considering that I don't tend to actually use them simultaneously, I am aware that I could just unplug the Blues and plug in the Browns at night, and reverse it again in the morning. I'm just being lazy and don't want to go through that daily.