I am running Ubuntu Mate 22.04 on a Macbook with a German keyboard and the German Apple keyboard settings.
Many Apple-specific glyphs are mapped right, but most of those accessible with the right alt taste are different.
I found a German site explaining how to get the correct mapping by changing the file
/usr/share/X11/xkb/symbols/de
...which I have done, but despite changing nothing to my keyboard, now Mate comes every time with an error message
"error activating XKB configuration"
That error keeps coming, even after I restored the original file.
How can I get rid of that message?
Is that file currently the right one to tweak the keyboard?
Thank you for your advice.
