Choosing "No automatic updates" has no effect

[Linus Bjorklund]

Image: ubuntu-16.04.1-server-amd64.iso (sha1sum de5ee8665048f009577763efbf4a6f0558833e59)

In one of the last steps of the text-installer you get the question if you want to activate automatic security updates. Choosing "No automatic updates" has no effect here and the system still gets configured to automatically install security updates through "unattended-upgrades".

I have made four different installs now (both physical and virtual machines) with just the default settings and all end up installing security updates automatically.

I guess the problem is that this configuration file gets wrongly configured:

/etc/apt/apt.conf.d/20auto-upgrades
APT::Periodic::Update-Package-Lists "1";
APT::Periodic::Unattended-Upgrade "1";

Should be:
APT::Periodic::Update-Package-Lists "1";
APT::Periodic::Unattended-Upgrade "0";

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[David Britton (dpb)]

Thanks for the report Doug --

To confirm, I booted a clean 16.04.2 server iso and went through the debian-installer. Choosing no automatic upgrades had the desired effect.