Public bug reported:
According to "man lpoptions":
> When run by the root user, lpoptions gets and sets default options and
> instances for all users in the /etc/cups/lpoptions file. Otherwise,
> the per-user defaults are managed in the ~/.cups/lpoptions file.
According to my experimentation, this is incorrect. When lpoptions is
run as root, the file "/root/.cups/lpoptions" is updated (aka the
personal default printer of root), not "/etc/cups/lpoptions" (aka the
system-wide default printer).
I'm unsure whether this is a documentation bug or wrong behavior. I
assume the later, because there seems to be no other option to set the
system-wide default printer.
root@mi553-022:~# lsb_release -rd
Description: Ubuntu 20.04.3 LTS
Release: 20.04
root@mi553-022:~# apt-cache policy cups
cups:
Installed: 2.3.1-9ubuntu1.1
Candidate: 2.3.1-9ubuntu1.1
Version table:
*** 2.3.1-9ubuntu1.1 500
500 http://ftp.luis.uni-hannover.de/ubuntu focal-updates/main amd64
Packages
500 http://ftp.luis.uni-hannover.de/ubuntu focal-security/main amd64
Packages
100 /var/lib/dpkg/status
2.3.1-9ubuntu1 500
500 http://ftp.luis.uni-hannover.de/ubuntu focal/main amd64 Packages
2.2.7-1ubuntu2.8 500
500 http://ftp.luis.uni-hannover.de/ubuntu bionic-security/main amd64
Packages
** Affects: cups (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1954902
Title:
lpoptions cannot change system-wide default printer
Status in cups package in Ubuntu:
New
Bug description:
According to "man lpoptions":
> When run by the root user, lpoptions gets and sets default options and
> instances for all users in the /etc/cups/lpoptions file. Otherwise,
> the per-user defaults are managed in the ~/.cups/lpoptions file.
According to my experimentation, this is incorrect. When lpoptions is
run as root, the file "/root/.cups/lpoptions" is updated (aka the
personal default printer of root), not "/etc/cups/lpoptions" (aka the
system-wide default printer).
I'm unsure whether this is a documentation bug or wrong behavior. I
assume the later, because there seems to be no other option to set the
system-wide default printer.
root@mi553-022:~# lsb_release -rd
Description: Ubuntu 20.04.3 LTS
Release: 20.04
root@mi553-022:~# apt-cache policy cups
cups:
Installed: 2.3.1-9ubuntu1.1
Candidate: 2.3.1-9ubuntu1.1
Version table:
*** 2.3.1-9ubuntu1.1 500
500 http://ftp.luis.uni-hannover.de/ubuntu focal-updates/main amd64
Packages
500 http://ftp.luis.uni-hannover.de/ubuntu focal-security/main amd64
Packages
100 /var/lib/dpkg/status
2.3.1-9ubuntu1 500
500 http://ftp.luis.uni-hannover.de/ubuntu focal/main amd64 Packages
2.2.7-1ubuntu2.8 500
500 http://ftp.luis.uni-hannover.de/ubuntu bionic-security/main amd64
Packages
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https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1954902/+subscriptions
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