in 'uu' context and only during the shutdown operation seems like. I just ran 'uu' from the CLI and it went well :
$ sudo unattended-upgrade --debug ... Log started: 2018-11-01 19:10:16 (Reading database ... 56537 files and directories currently installed.) Preparing to unpack .../linux-cloud-tools-common_4.15.0-36.39_all.deb ... Unpacking linux-cloud-tools-common (4.15.0-36.39) over (4.15.0-34.37) ... Setting up linux-cloud-tools-common (4.15.0-36.39) ... Processing triggers for ureadahead (0.100.0-20) ... Processing triggers for man-db (2.8.3-2ubuntu0.1) ... left to upgrade {'libcurl4', 'curl'} adjusting candidate version: linux-cloud-tools-common=4.15.0-36.39 applying set ['libcurl4', 'curl'] Log ended: 2018-11-01 19:10:20 ... ii linux-cloud-tools-common 4.15.0-36.39 all Linux kernel version specific cloud tools for version 4.15.0 During the shutdown procedure, it seems like something send a SIGTERM to 'uu' which cause the installation to not complete : 2018-11-01 14:20:26,426 INFO Writing dpkg log to /var/log/unattended-upgrades/unattended-upgrades-dpkg.log 2018-11-01 14:25:23,996 WARNING SIGTERM received, will stop 2018-11-01 14:25:24,027 WARNING SIGTERM received, will stop 2018-11-01 14:25:24,578 ERROR Installing the upgrades failed! 2018-11-01 14:25:24,579 ERROR error message: installArchives() failed 2018-11-01 14:25:24,579 ERROR dpkg returned a error! See /var/log/unattended-upgrades/unattended-upgrades-dpkg.log for details -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1796376 Title: Bug #1739107 fix causes linux-cloud-tools-common not to be upgradable with unattended-upgrades on shutdown mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1796376/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs