Comment 45 for bug 1670291

I tested successfully landscape-client and landscape-common packages from {trusty,xenial,bionic,cosmic}-proposed. As in the test case, masked systemd-logind.

After triggering reboots from landscape on all of those. All machines both force-rebooted as would be expected, and surfaced the error to the web interface
https://screenshots.firefox.com/bCPz5KxKkx4yG5hl/landscape.canonical.com