When I try to run
man -k ., I only get a list of commands starting with
pvck. So when I run
man ls for example, I get a blank page that asks me to select h for help or q to quit. The same thing happens when I run
man sudo and
man apt. Alternatively, if I run
man --help or
ls --help then I will get the correct output there.
I am using KDE Neon (Ubuntu 18.04). Let me know if you need any other information. Thanks.