Using reboot did more of the same. At this point the Xenial version is 16.04.4 - we have a snapshot from 2019-05-28. unattended-upgrades was at 0.90ubuntu0.9 but salt config management upgrades to 1.1ubuntu1.18.04.7~16.04.3 once the machine has salt installed. We pretty much update a symlink which has two publish dates, 2019-05-28 (old) to 2019-09-04 (new). I'm not sure if that's playing a role but I do know 0.90ubuntu0.9 worked for me last time.
# As root dbus-send --system --print-reply \ --dest=org.freedesktop.login1 /org/freedesktop/login1 \ org.freedesktop.login1.Manager.PowerOff boolean:false dbus-send --system --print-reply \ --dest=org.freedesktop.login1 /org/freedesktop/login1 \ org.freedesktop.login1.Manager.Reboot boolean:false -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unattended-upgrades in Ubuntu. https://bugs.launchpad.net/bugs/1843099 Title: Unattended upgrades does not work on shutdown Status in unattended-upgrades package in Ubuntu: Incomplete Bug description: 1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About Ubuntu * Ubuntu Xenial 16.04.6 LTS 2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Software Center * 1.1ubuntu1.18.04.7~16.04.3 3) What you expected to happen * Packages to be upgraded on reboot / shutdown. 4) What happened instead * The host just rebooted. Didn't perform upgrades. No useful output either until I enabled debug logging in the systemd unit file. I'm reporting a new bug but this is very similar to #1806487 and I'm actually wondering if it resurfaced somehow. We're running Ubuntu Xenial 16.04.6 which has 1.1ubuntu1.18.04.7~16.04.3 installed. I see that #1806487 was resolved with 1.1ubuntu1.18.04.7~16.04.2. However I'm seeing similar behavior. So far I've modified systemd to see if anything stands out. I do have an strace and then just debug mode. Unless needed, simply put, this is what a reboot with debug logging looks like (i.e. unattended-upgrades-shutdown.log): 2019-09-06 09:20:04,871 DEBUG - Waiting for signal to start operation 2019-09-06 09:20:43,996 WARNING - SIGTERM or SIGHUP received, stopping unattended-upgradesonly if it is running 2019-09-06 09:20:43,996 DEBUG - Starting countdown of 25.0 minutes 2019-09-06 09:20:43,997 DEBUG - get_lock returned 7 2019-09-06 09:20:43,997 DEBUG - lock not taken I hope that helps, please let me know if you need anything else from me or if I can provide any more information. I've done this many times before, this is the first time it hasn't worked. When I patched around the end of May, all went well. My other variants worked, well mainly Trusty but that's EOL for public access. Bionic doesn't seem to have anything it needs to update. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unattended-upgrades/+bug/1843099/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : firstname.lastname@example.org Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp