[Bug 1883338] [NEW] unattended-upgrades blocks apt

[ssducf]

Public bug reported:

Version: Ubuntu 18.04 and all prior versions that include unattended-
upgrades

Buggy behavior:

I boot a laptop that has been off for a while with the intent to install linux updates.
I type apt-get update; apt full-upgrade  and it fails, finding that unattended upgrades is running in the background for an extended period of time, but not actually running dpkg at all, just holding the lock, preventing me from running updates.


Expected behavior:

apt full-upgrade, the graphical update manager, and related commands
should either

1) Immediately (and silently?) abort whatever unattended-upgrades is
doing and proceed with running updates in the foreground

2) Display progress of updates currently running in the background,
waiting for them to finish, and then proceed with running additional
updates in the foreground

Note that it may be necessary to implement both behaviors, depending if
unattended-upgrades is just spinning or if it has actually started
running upgrades.

** Affects: unattended-upgrades (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1883338

Title:
  unattended-upgrades blocks apt

Status in unattended-upgrades package in Ubuntu:
  New

Bug description:
  Version: Ubuntu 18.04 and all prior versions that include unattended-
  upgrades

  Buggy behavior:

  I boot a laptop that has been off for a while with the intent to install linux updates.
  I type apt-get update; apt full-upgrade  and it fails, finding that unattended upgrades is running in the background for an extended period of time, but not actually running dpkg at all, just holding the lock, preventing me from running updates.

  
  Expected behavior:

  apt full-upgrade, the graphical update manager, and related commands
  should either

  1) Immediately (and silently?) abort whatever unattended-upgrades is
  doing and proceed with running updates in the foreground

  2) Display progress of updates currently running in the background,
  waiting for them to finish, and then proceed with running additional
  updates in the foreground

  Note that it may be necessary to implement both behaviors, depending
  if unattended-upgrades is just spinning or if it has actually started
  running upgrades.

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