Comment 5 for bug 1585771

Tested:

a37843379dd7061c2c1dc87ed215a284 *xenial-server-amd64.iso

And selected "No Automatic updates" when prompted.

After install there is no longer a /etc/apt/apt.conf.d/20auto-upgrades file present.

ubuntu@ubuntu:~$ cat /etc/apt/apt.conf.d/20auto-upgrades
cat: /etc/apt/apt.conf.d/20auto-upgrades: No such file or directory

ubuntu@ubuntu:~$ head -n 8 /etc/apt/apt.conf.d/50unattended-upgrades
// Automatically upgrade packages from these (origin:archive) pairs
Unattended-Upgrade::Allowed-Origins {
 "${distro_id}:${distro_codename}-security";
// "${distro_id}:${distro_codename}-updates";
// "${distro_id}:${distro_codename}-proposed";
// "${distro_id}:${distro_codename}-backports";
};

$ grep -nr "APT::Periodic::Unattended-Upgrade.*1.*" /etc/apt/apt.conf.d/*
ubuntu@ubuntu:~$