[Bug 1840732] Re: Upgrade 18.04 LTS to 19.10 fail and rollback

[Chris Guiver]

Thank you for taking the time to report this bug and helping to make
Ubuntu better.

The error message says " This was likely caused by:   * Unofficial
software packages not provided by Ubuntu. Please use the tool 'ppa-
purge' from the ppa-purge package to remove software from a Launchpad
PPA and try the upgrade again."

I can see packages in the listing that aren't from Ubuntu repositories,
plus many PPAs where they could have come from. The error message you
received fits, and the fix is `ppa-purge` i believe as the error message
states. As such I've marked this bug invalid.  If you believe i'm in
error, please return status to 'New' and leave a message as to why you
believe I'm in error.

The fix is to remove your added 3rd party packages, then try the upgrade
process again.  If you need help removing these packages, I'd recommend
looking at https://discourse.ubuntu.com/t/community-support/709 for
possibly support options.

Thanks again for trying to help us make Ubuntu better.

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

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https://bugs.launchpad.net/bugs/1840732

Title:
  Upgrade 18.04 LTS to 19.10 fail and rollback

Status in ubuntu-release-upgrader package in Ubuntu:
  Invalid

Bug description:
  Could not calculate the upgrade

  An unresolvable problem occurred while calculating the upgrade.

   This was likely caused by:
   * Unofficial software packages not provided by Ubuntu. Please use the tool 'ppa-purge' from the ppa-purge package to remove software from a Launchpad PPA and try the upgrade again.

  If none of this applies, then please report this bug using the command
  'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. If you want
  to investigate this yourself the log files in '/var/log/dist-upgrade'
  will contain details about the upgrade. Specifically, look at
  'main.log' and 'apt.log'.

  -------------------------
  Apologies, I don't know what package is bugging out, I think I'll just stay on 18.04.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.34
  ProcVersionSignature: Ubuntu 4.15.0-58.64-generic 4.15.18
  Uname: Linux 4.15.0-58-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.7
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Aug 20 06:48:30 2019
  InstallationDate: Installed on 2019-04-30 (111 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_ZA.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2019-08-20 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update-manager.release-upgrades: 2019-06-21T20:39:29.262820

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