[Bug 1877184] Re: tried to upgrade a machine from 18.04 to 20.04

[Brian Murray]

*** This bug is a duplicate of bug 1875523 ***
    https://bugs.launchpad.net/bugs/1875523

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

** This bug has been marked a duplicate of bug 1875523
   I can't upgrade the ubuntu to 20.04 by terminal. Everytime I do it, a message appear saying that it is not possible do the upgrade.

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https://bugs.launchpad.net/bugs/1877184

Title:
  tried to upgrade a machine from 18.04 to 20.04

Status in ubuntu-release-upgrader package in Ubuntu:
  Fix Released

Bug description:
  Could not calculate the upgrade

  An unresolvable problem occurred while calculating the upgrade.

  This was caused by: 
  * Upgrading to a pre-release version of Ubuntu 
  This is most likely a transient problem, 
  please try again later. 
  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'. 

  I looked at the suggested logs and my skill level was not up to the
  challenge.

  I did the 'ubuntu-bug ubuntu-release-upgrader-core' and it brought be
  to this page, so I hope that info is attached.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.37
  ProcVersionSignature: Ubuntu 4.15.0-99.100-generic 4.15.18
  Uname: Linux 4.15.0-99-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.14
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: MATE
  Date: Wed May  6 13:44:55 2020
  InstallationDate: Installed on 2018-07-21 (655 days ago)
  InstallationMedia: Ubuntu-MATE 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-05-06 (0 days ago)

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