For some reason, Caps Lock stopped working on my machine. Not only on the laptop keyboard, but on any connected keyboard as well. I'm using 18.04 on a Dell XPS 15 9560.
It worked perfectly until a few days ago and it stopped working after rebooting when I just had done a regular system update.
Keyboard & Mouse->Additional Layout Options->Caps lock behavior
to see if the setting there is what you want.Additional Layout Options
button. Now I set it toCaps Lock toggles normal capitalization of alphabetic characters
, which I suppose it was before. Thanks again!