system-config-printer.py empties cupsd.conf

[Wolf Pichler]

When changing print server settings:

gnome-control-center -> Devices -> Printers -> Additional Printer Settings ... => system-config-printer.py is started -> Server Settings -> PreserveJobHistory No

CUPS will automatically be restarted but does not come up any more because /etc/cups/cupsd.conf now only contains one single line:

PreserveJobHistory No

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Fortunately the old configuration is stored in /etc/cups/cupsd.conf.O.

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lsb_release -rd:
Description: Ubuntu 18.04.1 LTS
Release: 18.04

apt-cache policy system-config-printer:
system-config-printer:
  Installed: 1.5.11-1ubuntu2
  Candidate: 1.5.11-1ubuntu2
  Version table:
 *** 1.5.11-1ubuntu2 500
        500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages
        500 http://archive.ubuntu.com/ubuntu bionic/main i386 Packages
        100 /var/lib/dpkg/status