[Bug 1845690] Re: Do not offer an upgrade from i386 systems

[Brian Murray]

The new bug for this issue is bug 1901725.

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https://bugs.launchpad.net/bugs/1845690

Title:
  Do not offer an upgrade from i386 systems

Status in ubuntu-release-upgrader package in Ubuntu:
  Invalid
Status in update-manager package in Ubuntu:
  Fix Released
Status in ubuntu-release-upgrader source package in Bionic:
  Invalid
Status in update-manager source package in Bionic:
  Fix Released
Status in ubuntu-release-upgrader source package in Focal:
  Invalid
Status in update-manager source package in Focal:
  Fix Released

Bug description:
  Impact
  ------
  Ubuntu 18.04 users on a system with a host architecture of i386 will be offered to upgrade to Ubuntu 20.04 only to later be told by ubuntu-release-upgrader that they can not upgrade to 20.04. Rather than have people experience this we'd like to SRU update-manager to notify users of the fact that they will not be able to upgrade to 20.04.

  Test Case
  ---------
  1) On an 18.04 i386 system set Prompt=lts in /etc/update-manager/release-upgrades
  2) run update-manager -d
  3) observe a notification about a new release of ubuntu and see the release announcement
  4) start the upgrade and observe a dialog telling you that you system can't upgrade
  5) wonder why you wasted so much time trying to upgrade

  With the version of update-manager in -proposed you will instead be
  immediately presented with a dialog that says "Sorry, there are no
  more upgrades for this system".

  Regression Potential
  --------------------
  While not strictly speaking a regression this dialog is not translated but we think it is better that be notified that there are no upgrades rather than being lead to believe that they can upgrade only to be told no.

  Original Description
  --------------------
  Given that there will not be a full set of i386 packages for Ubuntu 19.10 and that it will not be possible to upgrade to Ubuntu 19.10 it'd be best if the new release dialog were not displayed for systems with an apt architecture of i386. The message should indicate how long they will continue to receive updates for and present information about reinstalling using amd64 (if that's possible). These changes will need to SRU'ed to both Ubuntu 18.04 and Ubuntu 19.04.

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