man breaks after upgrade to 18.04

[casial]

The error later changed to "Permission denied," and with that, I was able to find a match for my problem.

https://bugs.launchpad.net/ubuntu/+sourc...ug/1778684

The problem is due to a change in 18.04 that isn't handled by the older kernel. Here's the workaround from one of the posts on that page. I executed these steps, and now man is working just fine for me.

Alex (alexthreed) wrote on 2018-08-15:
#10

Seems that problem in apparmor profile loading on older kernels.

I have the same issue on custom kernel 4.4, but with ubuntu kernel 4.15 everything ok.
Workaround for older kernels:

apt install apparmor-utils
aa-disable /usr/bin/man

Upstream Bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=889617

Thanks! This man issue has bothered me on my Pinebook with KDE Neon for some time now - and I really didn't know where to begin, the error msg. wasn't very helpful.

I wouldn't guess it was because of app-armor tho...