[Bug 1947977] Re: 'ubuntu-minimal' could not be located during release upgrade

[Launchpad Bug Tracker]

[Expired for ubuntu-release-upgrader (Ubuntu) because there has been no
activity for 60 days.]

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

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https://bugs.launchpad.net/bugs/1947977

Title:
  'ubuntu-minimal' could not be located during release upgrade

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

Bug description:
  The release upgrade from 20.04 to 21.04 kept failing because some
  foreign packages were installed. After I attempted removing the said
  packages - using the "Software & Updates" GUI tool, the upgrade failed
  because "the essential package 'ubuntu-minimal' could not be located
  on the system".

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubuntu-release-upgrader-core 1:20.04.36
  ProcVersionSignature: Ubuntu 5.11.0-38.42~20.04.1-generic 5.11.22
  Uname: Linux 5.11.0-38-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu27.20
  Architecture: amd64
  CasperMD5CheckResult: skip
  CrashDB: ubuntu
  Date: Thu Oct 21 11:42:14 2021
  InstallationDate: Installed on 2020-06-23 (484 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to focal on 2021-10-21 (0 days ago)
  VarLogDistupgradeAptlog:
   Log time: 2021-10-21 11:41:48.737310
   Log time: 2021-10-21 11:41:53.536546
   Log time: 2021-10-21 11:42:14.033802
   Log time: 2021-10-21 11:42:15.661275
  mtime.conffile..etc.update-manager.release-upgrades: 2021-10-21T10:31:39.609905

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