[Bug 1690980] Re: unattended-upgrades does not block shutdown of system, as it is designed to

[Brian Murray]

I built a new version of unattended-upgrades with Balint's patch and
tested it on an Ubuntu 16.04 system. I used the attached modified
version of the reboot script provided by Ethan and saw the following in
the terminal which I had run "sudo unattended-upgrade --debug
--verbose":

Preparing to unpack .../libc6-dev_2.23-0ubuntu9_amd64.deb ...
Unpacking libc6-dev:amd64 (2.23-0ubuntu9) over (2.23-0ubuntu3) ...
Connection to clean-xenial-amd64.local closed by remote host.
Connection to clean-xenial-amd64.local closed.

The system ended up in a state where I had to run 'sudo dpkg --configure
-a' and then 'sudo apt-get -f install'.

** Attachment added: "script to reboot"
   https://bugs.launchpad.net/ubuntu/+source/unattended-upgrades/+bug/1690980/+attachment/4912389/+files/u-u-reboot.sh

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https://bugs.launchpad.net/bugs/1690980

Title:
  unattended-upgrades does not block shutdown of system, as it is
  designed to

Status in OEM Priority Project:
  Triaged
Status in OEM Priority Project xenial series:
  New
Status in unattended-upgrades package in Ubuntu:
  Incomplete

Bug description:
  Title: No pop-up window to warn users that system should not reboot or
  shutdown while installing security updates

  Summary:
  No pop-up window to warn users that system should not reboot or shutdown while installing security updates

  Steps:
  1. trigger unattended-upgrades
  2. reboot or shutdown system while installing packages

  Expected results: There is a pop-up window to warn users that system
  should not reboot or shutdown

  Actual results: There is no pop-up window to warn users

  Additional information:
  $ apt-cache policy unattended-upgrades
  unattended-upgrades:
    Installed: 0.90
    Candidate: 0.90ubuntu0.5
  $ lsb_release -rd
  Description:    Ubuntu 16.04 LTS

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