I get a sore left wrist when I spend too much time typing a computer, and I think the key problem is doing left-ctrl+q, left-ctrl+a, left-ctrl+z, etc (on qwerty keyboard). I should do right-ctrl+q, right-ctrl+a, etc... (modifiers on one hand, letter on the other) but I have taken the wrong habit.
To learn without having to pay attention to my typing all the time, I would like to disable left-ctrl + LEFT LETTER (LEFT LETTER = 123456qwertasdfzxcv, ie. any letter on the keyboard) but keep right-ctrl + LEFT LETTER (same for the symmetric, and same for shift), so that every time I make mistake nothing happens and pick up my mistake straight away.
Is that possible on Ubuntu? What I need is disable a keybind with the left ctrl, but keep it enabled with the right ctrl.
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 24.04.2 LTS
Release: 24.04
Codename: noble
$ uname -a
Linux mathieu-laptop 6.11.0-25-generic #25~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Apr 15 17:20:50 UTC 2 x86_64 x86_64 x86_64 GNU/Linux
$ env | grep XDG
XDG_SESSION_TYPE=wayland
XDG_SESSION_CLASS=user
XDG_MENU_PREFIX=gnome-
XDG_RUNTIME_DIR=/run/user/1000
XDG_CURRENT_DESKTOP=ubuntu:GNOME
XDG_SESSION_DESKTOP=ubuntu
XDG_DATA_DIRS=/usr/local/share/:/usr/share/:/var/lib/snapd/desktop
