I got my hands on a Logitech Ultra X (Y-SX49) keyboard, with US key marks. The US key placement is much better than my Swedish native, at least for programmers, because there are much fewer shortcuts for things typically desired when writing code. For example, all kinds of brackets, but also semicolon, backslash, etc.: such things would typically demand a key combination under the Swedish keymap (to give room for the three special Swedish characters), while, with the US placement, often a single key will do. (And the compose key will deal with Å, Ä, and Ö.) So I changed, while still using keyboards with Swedish marks. However, with this new keyboard, everything should be in sync. Only, it has this old port, which I think is called PS/2 (round, with nails for holes). I have a one decimeter wire to transform this port into USB (as I lack a PS/2 port on my laptop) but, when I type, it says (for example):
[ 258.228055] hub 4-0:1.0: unable to enumerate USB device on port 5
Anyone knows why it doesn't work and, if possible, how to fix it?