[Bug 1799310] Re: No warning when upgrading OS will turn off Livepatch

[Brian Murray]

The location in the code where the dialog was added is a part of the
dist-upgrader tarball which is downloaded during the release upgrade
process. Subsequently this does not need fixing in 18.04, rather in
18.10+ as those are where the tarballs from.

** Also affects: ubuntu-release-upgrader (Ubuntu Cosmic)
   Importance: Undecided
       Status: New

** Changed in: ubuntu-release-upgrader (Ubuntu Cosmic)
       Status: New => Triaged

** Changed in: ubuntu-release-upgrader (Ubuntu Cosmic)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1799310

Title:
  No warning when upgrading OS will turn off Livepatch

Status in ubuntu-release-upgrader package in Ubuntu:
  In Progress
Status in ubuntu-release-upgrader source package in Cosmic:
  Triaged

Bug description:
  1. Install an LTS release, e.g. Ubuntu 18.04.

  2. Turn on Livepatch.

  3. Run “do-release-upgrade”, “ubuntu-release-upgrader-gtk”, or
  “ubuntu-release-upgrader-qt” to upgrade to the following non-LTS
  release.

  What happens: You are prompted to upgrade as normal.

  What should happen: At some point before you confirm that the upgrade
  should begin, you are warned that upgrading will turn off Livepatch.

  This warning should not appear if you weren’t using Livepatch anyway.

  <https://wiki.ubuntu.com/ReleaseUpgrades#livepatch>: ‘If Livepatch is
  turned on, and you are upgrading to a version where Livepatch is not
  available, the dialog should morph to a confirmation alert: “Livepatch
  is not available for {new version}. If you continue, Livepatch will
  turn off.”’

  [Prompted by bug 1798839.]

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