[Bug 1973013] Re: Could not calculate the upgrade while trying to upgrade from 20.04 to 21.10

[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/1973013

Title:
  Could not calculate the upgrade while trying to upgrade from 20.04 to
  21.10

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

Bug description:
  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.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubuntu-release-upgrader-core 1:20.04.38
  ProcVersionSignature: Ubuntu 5.4.0-109.123-generic 5.4.178
  Uname: Linux 5.4.0-109-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu27.23
  Architecture: amd64
  CasperMD5CheckResult: skip
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Wed May 11 09:12:27 2022
  DistributionChannelDescriptor:
   # This is the distribution channel descriptor for the OEM CDs
   # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
   canonical-oem-somerville-bionic-amd64-20190418-59+beaver-osp1+X00
  InstallationDate: Installed on 2020-12-24 (502 days ago)
  InstallationMedia: Ubuntu 18.04 "Bionic" - Build amd64 LIVE Binary 20190418-12:10
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to focal on 2022-05-11 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update-manager.release-upgrades: 2021-08-30T12:56:47.951519

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