I am having the same problem on Ubuntu 18.04. It was working on both 16
and 18 until recently.
root@T550:~# systemctl status saned.socket
● saned.socket - saned incoming socket
Loaded: loaded (/lib/systemd/system/saned.socket; enabled; vendor preset: ena
Active: active (listening) since Fri 2019-07-05 00:03:10 BST; 1min 46s ago
Listen: 0.0.0.0:6566 (Stream)
Accepted: 0; Connected: 0
Tasks: 0 (limit: 4915)
CGroup: /system.slice/saned.socket
Jul 05 00:03:10 T550 systemd[1]: Listening on saned incoming socket.
root@T550:~# systemctl start saned
Failed to start saned.service: Unit saned.service is masked.
root@T550:~# service saned start
Failed to start saned.service: Unit saned.service is masked.
root@T550:~#
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Packages, which is subscribed to sane-backends in Ubuntu.
https://bugs.launchpad.net/bugs/1577137
Title:
saned.service masked and cannot be unmasked
Status in sane-backends package in Ubuntu:
Invalid
Bug description:
After upgrading to 16.04 (from 14.04) I noticed the sane daemon (sane-
utils 1.0.25+git20150528-1ubuntu2) was no longer running. Attempting
to manually start it results in systems complaining that the service
is masked:
kjetil at lucien in ~> sudo systemctl start saned
Failed to start saned.service: Unit saned.service is masked.
Unmasking it does not work:
kjetil at lucien in ~> sudo systemctl unmask saned
kjetil at lucien in ~> sudo systemctl start saned
Failed to start saned.service: Unit saned.service is masked.
kjetil at lucien in ~> ps u -C saned
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
kjetil at lucien in ~>
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: sane-utils 1.0.25+git20150528-1ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
Date: Sun May 1 13:10:31 2016
InstallationDate: Installed on 2012-08-01 (1368 days ago)
InstallationMedia: Ubuntu-Server 12.04 LTS "Precise Pangolin" - Release amd64
(20120424.1)
SourcePackage: sane-backends
UpgradeStatus: Upgraded to xenial on 2016-04-24 (6 days ago)
mtime.conffile..etc.default.saned: 2016-05-01T12:51:02.879807
mtime.conffile..etc.sane.d.saned.conf: 2016-01-10T13:57:20.785810
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