seems like https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=889608
that should be fixed in man-db 2.8.2
I am running ubuntu 18.04 mate fresh install, man-db is Version 2.8.3
Problem: man shows no output
apparmor shows:
audit: type=1400 audit(1527964154.398:74): apparmor="DENIED" operation="exec" info="profile not found" error=-13 profile="/usr/bin/man" name="/usr/bin/preconv" pid=22687 comm="man" requested_mask="x" denied_mask="x" fsuid=1000 ouid=0
man -debug man shows:
.....
ult_src: File /usr/share/man/de/man1/man.1.gz in mantree /usr/share/man/de
loading seccomp filter (permissive: 0)
found ultimate source file /usr/share/man/de/man1/man.1.gz
found lang dir element de
converted /usr/share/man/de/man1/man.1.gz to /usr/share/man/de/cat1/man.1.gz
is_changed: a=/usr/share/man/de/man1/man.1.gz, b=/usr/share/man/de/cat1/man.1.gz (-2)
converted /var/cache/man/de/cat1/man.1.gz to /var/cache/man/de/cat1/man.1.gz
will try cat file /var/cache/man/de/cat1/man.1.gz
found lang dir element de
Macro language de; hyphenation language de
loading seccomp filter (permissive: 0)
pre-processors `t' from file
page_encoding = ISO-8859-1
source_encoding = ISO-8859-1
locale_charset = UTF-8
roff_device (locale) = utf8
roff_encoding = ISO-8859-1
output_encoding = UTF-8
less_charset = utf-8
Terminal width 126
Terminal width 126 not within cat page range [80, 80]
Using 122-character lines
formatted_encoding = UTF-8
format: 1, save_cat: 0, found: 1
add_output_iconv: source UTF-8, target UTF-8
Setting LESS to -ix8RmPm Manual page man(1) ?ltline %lt?L/%L.:byte %bB?s/%s..?e (END):?pB %pB\%.. (press h for help or q to quit)$PM Manual page man(1) ?ltline %lt?L/%L.:byte %bB?s/%s..?e (END):?pB %pB\%.. (press h for help or q to quit)$
Setting MAN_PN to man(1)
++priv_drop_count = 1
man: Befehl mit Exit-Status 4 beendet: (cd /usr/share/man/de && /usr/lib/man-db/zsoelim) | (cd /usr/share/man/de && /usr/lib/man-db/manconv -f UTF-8:ISO-8859-1 -t UTF-8//IGNORE) | (cd /usr/share/man/de && preconv -e UTF-8) | (cd /usr/share/man/de && tbl) | (cd /usr/share/man/de && nroff -mandoc -rLL=122n -rLT=122n -Tutf8)
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: man-db 2.8.3-2
Uname: Linux 4.9.99-040999-lowlatency x86_64
NonfreeKernelModules: iscsit vtldev vtlcore nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.1
Architecture: amd64
CurrentDesktop: MATE
Date: Sat Jun 2 20:31:28 2018
InstallationDate: Installed on 2018-05-08 (25 days ago)
InstallationMedia: Ubuntu-MATE 18.04 LTS "Bionic Beaver" - Beta amd64 (20180404)
SourcePackage: man-db
UpgradeStatus: No upgrade log present (probably fresh install)
Status changed to 'Confirmed' because the bug affects multiple users.