Thank you for your bug report, what's the output of those commands $ dpkg -l | grep evince $ dpkg -l | grep nss $ ldd -v /usr/lib/x86_64-linux-gnu/evince/4/backends/libpdfdocument.sos
** Changed in: evince (Ubuntu) Importance: Undecided => Low ** Changed in: evince (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to evince in Ubuntu. https://bugs.launchpad.net/bugs/1869159 Title: Opening a pdf from Zotero in evince, I got "failed to load backend for 'application/pdf': libnss3.so: failed to load shared object mapping segment Status in evince package in Ubuntu: Incomplete Bug description: Opening a pdf file from Zotero in evince, I got "failed to load backend for 'application/pdf': libnss3.so: failed to load shared object mapping segment" and the file won't open. When opening the file from its location in Nautilus, that works properly. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: evince 3.36.0-1 ProcVersionSignature: Ubuntu 5.4.0-18.22-generic 5.4.24 Uname: Linux 5.4.0-18-generic x86_64 ApportVersion: 2.20.11-0ubuntu21 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Thu Mar 26 10:17:17 2020 InstallationDate: Installed on 2019-02-21 (398 days ago) InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash SourcePackage: evince UpgradeStatus: Upgraded to focal on 2020-03-20 (5 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/evince/+bug/1869159/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp