You have been subscribed to a public bug: There is a symlink in /lib/systemd/system from udev.service to systemd- udevd.service, however, running "systemctl is-active udev" returns "unknown" instead of "active" initially. This can be solved by running "systemctl status udev" once, but for monitoring the service it would be nicer if the "is-active" would be working out of the box.
$ lsb_release -rd Description: Ubuntu 15.04 Release: 15.04 $ apt-cache policy udev udev: Installed: 219-7ubuntu6 Candidate: 219-7ubuntu6 Version table: *** 219-7ubuntu6 0 500 http://eu.archive.ubuntu.com/ubuntu/ vivid-updates/main amd64 Packages 100 /var/lib/dpkg/status 219-7ubuntu3 0 500 http://eu.archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages ** Affects: systemd (Ubuntu) Importance: Undecided Status: New -- systemctl is-active udev returns unknown https://bugs.launchpad.net/bugs/1488954 You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp