[Bug 1848909] Re: Cannot upgrade from Ubuntu 19.04 to 19.10

[Brian Murray]

This is because you are using an unofficial mirror of the Ubuntu
archive. Try running "RELEASE_UPGRADER_ALLOW_THIRD_PARTY=1 do-release-
upgrade -d" and see if that allows you to proceed with the upgrade.

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

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https://bugs.launchpad.net/bugs/1848909

Title:
  Cannot upgrade from Ubuntu 19.04 to 19.10

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

Bug description:
  My current system is Ubuntu 19.04. I run the following command to
  upgrade to Ubuntu 19.10

  sudo apt update && sudo apt full-upgrade
  sudo apt dist-upgrade
  sudo do-release-upgrade -d

  I got the following error when do-release-upgrade was running.

  Invalid package information

  After updating your package information, the essential package 
  'ubuntu-minimal' could not be located. This may be because you have 
  no official mirrors listed in your software sources, or because of 
  excessive load on the mirror you are using. See /etc/apt/sources.list 
  for the current list of configured software sources. 
  In the case of an overloaded mirror, you may want to try the upgrade 
  again later.

  ProblemType: Bug
  DistroRelease: Ubuntu 19.04
  Package: ubuntu-release-upgrader-core 1:19.04.16.7
  ProcVersionSignature: Ubuntu 5.0.0-32.34-generic 5.0.21
  Uname: Linux 5.0.0-32-generic x86_64
  ApportVersion: 2.20.10-0ubuntu27.1
  Architecture: amd64
  CrashDB: ubuntu
  Date: Sun Oct 20 11:51:49 2019
  InstallationDate: Installed on 2018-08-09 (436 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to disco on 2019-10-20 (0 days ago)
  VarLogDistupgradeAptlog:
   Log time: 2019-10-20 11:49:06.866263
   Log time: 2019-10-20 11:49:09.565368
   Log time: 2019-10-20 11:51:49.231677
   Log time: 2019-10-20 11:51:52.185997

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