[Bug 1554099] Re: Changing what action for security updates unusable

[Doug McMahon]

It seems unattended-upgrades sets default to *install* in 20auto-
upgrades, (1),  but in 10periodic the default for download
(APT::Periodic::Download-Upgradeable-Packages) is set to just Display
immediately (0)

This creates an impossible situation,  Unattended-Upgrade can't install
when Download is off

Once the 10 file is edited to make the 20 file viable any changes in
Software & Updates regarding these options is mirrored between the 2
files so they are 'on the same page' so to speak from that point on.

The whole deal can be re-created at any point by removing unattended-
upgrades package, then re-installing software-properties-gtk  &
unattended-upgrades

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https://bugs.launchpad.net/bugs/1554099

Title:
  Changing what action for security updates unusable

Status in software-properties package in Ubuntu:
  Confirmed
Status in unattended-upgrades package in Ubuntu:
  Confirmed
Status in software-properties source package in Xenial:
  Confirmed
Status in unattended-upgrades source package in Xenial:
  Confirmed

Bug description:
  Open software-properties.

  Important security updates is not enabled on install.

  Secondly - it is not possible to change the action to take with
  security updates even if it is enabled (note: I enabled security
  updates, reloaded cache and restarted software-properties before
  trying to change the action)

  eg - the Display Immediately/Download automatically/Download and
  install automatically

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: software-properties-gtk 0.96.18
  ProcVersionSignature: Ubuntu 4.4.0-10.25-generic 4.4.3
  Uname: Linux 4.4.0-10-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Mon Mar  7 15:35:24 2016
  InstallationDate: Installed on 2016-03-07 (0 days ago)
  InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160307)
  PackageArchitecture: all
  SourcePackage: software-properties
  UpgradeStatus: No upgrade log present (probably fresh install)

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