Thanks, I will try later Beko, don't have alcohol available right now (due to
the virus situation).
In the meantime I used xmodmap to assign another key (one I don't usually
need) to be the minus and underscore key. The one that was giving me trouble
I disabled with:
sudo xmodmap -e 'keycode 61 = '
I don't know however if this will work in the long run, since I believe this
is a hardware issue. Still looking for a command that actually tells the
hardware to disable the key in question (instead of just mapping an empty
value to it).
