Comment 0 for bug 1773033

Ubuntu 17.10 and 18.04 do not install updates with InstallOnShutdown flag set.

post-install script on 14.04 and 16.04 would set options in /etc/apt/apt.conf.d/50unattended-upgrades and /etc/apt/apt.conf.d/10periodic to install updates on shutdown of ubuntu desktop. This worked on 17.10 also, until an update before the release of 18.04. After a fresh install of 18.04, ran the post install script. Below is the contents of the two files, updates do not run, even if performing an apt update and leaving the machine up for a few hours to download packages in the back ground. Both the unattended-upgrades and unattended-upgrades-shutdown log files are empty.

Description: Ubuntu 18.04 LTS
Release: 18.04

ii unattended-upgrades 1.1ubuntu1 all automatic installation of security upgrades

----------------------/etc/apt/apt.conf.d/50unattended-upgrades----------------
Unattended-Upgrade::Allowed-Origins {
        "${distro_id}:${distro_codename}";
        "${distro_id}:${distro_codename}-security";
        // Extended Security Maintenance; doesn't necessarily exist for
        // every release and this system may not have it installed, but if
        // available, the policy for updates is such that unattended-upgrades
        // should also install from here by default.
        "${distro_id}ESM:${distro_codename}";
        "${distro_id}:${distro_codename}-updates";
// "${distro_id}:${distro_codename}-proposed";
// "${distro_id}:${distro_codename}-backports";
        "LP-PPA-libreoffice:${distro_codename}";
        "Canonical:${distro_codename}";
};

Unattended-Upgrade::Package-Blacklist {
// "vim";
// "libc6";
// "libc6-dev";
// "libc6-i686";
};

Unattended-Upgrade::DevRelease "false";
Unattended-Upgrade::InstallOnShutdown "true";
Unattended-Upgrade::Remove-Unused-Dependencies "true";

---------/etc/apt/apt.conf.d/10periodic:----------------------
APT::Periodic::Update-Package-Lists "1";
APT::Periodic::Download-Upgradeable-Packages "1";
APT::Periodic::AutocleanInterval "7";
APT::Periodic::Unattended-Upgrade "1";