I wanted to request your help here. I've been struggling to get my layout back on Ubuntu after upgraded for the last version (22.04) and I ran the command to change my layout "xmodmap .Xmodmap". It responded perfectly on Chrome however it got ignored by the terminal and many others applications.
I've tried to see what's going on through "xev" and everything seems to work accordingly to the .Xmodmap file.
I'm stuck ...
I finally found a possible solution ... I needed to install Input Remapper. It's easily findable on git (https://github.com/sezanzeb/input-remapper) here's the link. All the steps for a clean install are detailled you just need to copy & run the commands.
I suggest you to set up your keyboard to a default layout beforehand.
No reboot needed, it applied instantly and the UI is pretty innate.
A huge big up to Tobi aka sezanzeb for giving us such a useful tool.