[Bug 1926542] Re: failed 20.04 upgrade fom 18.04; all ppas removed; update is current

[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/1926542

Title:
  failed 20.04 upgrade fom 18.04; all ppas removed; update is current

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

Bug description:
  failed 20.04 upgrade fom 18.04 with do-release-upgrade
  all ppas removed
  apt-get update is current
  Output from do-release-upgrade:
  ----
  Could not calculate the upgrade 

  An unresolvable problem occurred while calculating the upgrade.

  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'. 
  ----

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.44
  ProcVersionSignature: Ubuntu 4.15.0-142.146-generic 4.15.18
  Uname: Linux 4.15.0-142-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.9-0ubuntu7.23
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: GNOME-Flashback:GNOME
  Date: Wed Apr 28 18:55:59 2021
  InstallationDate: Installed on 2018-02-26 (1157 days ago)
  InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2021-04-29 (0 days ago)

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