Tried #5 but : sudo service cups start Job for cups.socket failed. See "systemctl status cups.socket" and "journalctl -xe" for details.
systemctl status cups.socket ● cups.socket - CUPS Scheduler Loaded: loaded (/lib/systemd/system/cups.socket; enabled; vendor preset: enab Active: inactive (dead) since sam. 2016-11-19 17:16:13 CET; 6min ago Listen: /var/run/cups/cups.sock (Stream) nov. 19 10:41:20 julien-P55-UD6 systemd[1]: Listening on CUPS Scheduler. nov. 19 17:16:13 julien-P55-UD6 systemd[1]: Closed CUPS Scheduler. nov. 19 17:21:26 julien-P55-UD6 systemd[1]: cups.socket: Socket service cups.ser nov. 19 17:21:26 julien-P55-UD6 systemd[1]: Failed to listen on CUPS Scheduler. lines 1-9/9 (END) journalctl -xe -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- L'horloge système a été modifiée et positionnée à REALTIME microsecondes -- après le 1er janvier 1970. nov. 19 17:22:48 julien-P55-UD6 systemd[1]: snapd.refresh.timer: Adding 4h 7min nov. 19 17:22:48 julien-P55-UD6 systemd[1]: apt-daily.timer: Adding 7h 5min 1.52 nov. 19 17:23:21 julien-P55-UD6 systemd[1]: Time has been changed -- Subject: Changement d'heure -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- L'horloge système a été modifiée et positionnée à REALTIME microsecondes -- après le 1er janvier 1970. nov. 19 17:23:21 julien-P55-UD6 systemd[1228]: Time has been changed -- Subject: Changement d'heure -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- L'horloge système a été modifiée et positionnée à REALTIME microsecondes -- après le 1er janvier 1970. nov. 19 17:23:21 julien-P55-UD6 systemd[1]: snapd.refresh.timer: Adding 3h 49min nov. 19 17:23:21 julien-P55-UD6 systemd[1]: apt-daily.timer: Adding 8h 31min 51. lines 3601-3623/3623 (END) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1642966 Title: package cups-daemon 2.1.3-4 failed to install/upgrade: subprocess new pre-removal script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1642966/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
