Possibly this: https://bugs.kde.org/show_bug.cgi?id=440131 Can you please try and install cups-bsd
** Bug watch added: KDE Bug Tracking System #440131 https://bugs.kde.org/show_bug.cgi?id=440131 -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to okular in Ubuntu. https://bugs.launchpad.net/bugs/2056067 Title: unable to print pdf with okular( lpr usage error) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/okular/+bug/2056067/+subscriptions -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs