[Bug 1928101] Re: sudo do-release-upgrade fails 18.04-20.04

[Nicolas Fourcaud-Trocmé]

With a similar bug I tried:

do-release-upgrade -p

And it accepts to start the upgrade. I will go to the end of the process
later today or tomorrow.

Thx

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https://bugs.launchpad.net/bugs/1928101

Title:
  sudo do-release-upgrade fails 18.04-20.04

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

Bug description:
  I deactivated all extra sources in etc/apt/sources.list.d/*.list but
  the upgrade tools ends with an error. I used this manual
  https://manual.lubuntu.me/stable/D/upgrading.html - Regards, Ingo

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.44
  ProcVersionSignature: Ubuntu 4.15.0-91.92-generic 4.15.18
  Uname: Linux 4.15.0-91-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.23
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: LXDE
  Date: Tue May 11 16:09:46 2021
  InstallationDate: Installed on 2015-03-12 (2251 days ago)
  InstallationMedia: Lubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2021-05-11 (0 days ago)
  VarLogDistupgradeAptclonesystemstate.tar.gz:
   Error: command ['pkexec', 'cat', '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'] failed with exit code 127: polkit-agent-helper-1: error response to PolicyKit daemon: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: No session for cookie
   Error executing command as another user: Not authorized
   
   This incident has been reported.

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