Another Debian bug reference ( #1002725) provided a better (for me!)
clue:
In /etc/apparmor.d/usr.bin.evince
adding after
/usr/bin/pcmanfm Cx -> sanitized_helper, # LXDE
/usr/bin/krusader Cx -> sanitized_helper, # KDE
/usr/bin/thunar Cx -> sanitized_helper, # XFCE
the line
There is a Debian fix,
https://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1870625.html
Apparently the problem occurs under Cinnamon, but not under Gnome-
Desktop
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Public bug reported:
evince /tmp/royalt*pdf
sh: 1: /usr/lib/x86_64-linux-gnu/libproxy/0.4.17/pxgsettings: Permission denied
Killed
Evince does not respond at all, and has to be stopped
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: evince 42.3-0ubuntu2
ProcVersionSignature: Ubuntu
I tried to install Qpdfview, but failed with the error message
W: Failed to fetch
http://security.ubuntu.com/ubuntu/pool/universe/p/poppler/libpoppler-qt5-1_0.62.0-2ubuntu2.1_amd64.deb
404 Not Found [IP: 91.189.88.149 80]
Ubuntu 18.04.1
Now I can't either install libpoppler-qt5, or
