My backtick key (`) produces nothing when first pressed - I have to press it twice to generate a `. If I forget, and type ` e, I get an accented e character.
I am only able to fix this temporarily, for the current session, by running:
xmodmap -e 'keycode 49 = grave asciitilde'
The problem is, I can't figure out how to make this change permanent. I have found many related questions on Ask Ubuntu, but none that solve this specific problem.
I am using KDE.