[Bug 1897993] Re: Upgrade from v18 LTS to 20.04.1 LTS doesn't work both via shell and using upgrade manager

[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/1897993

Title:
  Upgrade from v18 LTS to 20.04.1 LTS doesn't work both via shell and
  using upgrade manager

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

Bug description:
  Was experiencing 2 issues. The first one is resolved but may be
  related to the one currently being faced, hence why I'm sharing it:

  Issue 1) Software-Updater prompts to upgrade to 20.04.1 LTS but
  clicking on upgrade causes the dialog box to disappear and does
  nothing in the background. After following the steps highlighted below
  this paragraph, I found that wine wasn't getting updated for some
  reason, so I readded the PPAs for that and updated it via shell. This
  resolved the issue and upon a restart, the Software-Updater upgrade to
  20.04.1 LTS started going to the actual upgrade screen upon clicking
  upgrade.

  sudo apt update
  sudo apt upgrade
  sudo reboot command (up till this, upgraded everything except wine)

  To fix wine:
  sudo dpkg --add-architecture i386
  wget -qO - https://dl.winehq.org/wine-builds/winehq.key | sudo apt-key add -
  sudo add-apt-repository ppa:cybermax-dexter/sdl2-backport
  sudo apt update
  sudo apt upgrade
  sudo reboot command

  Doing the above upgraded wine to v5 from v4 and allowed me to proceed
  to Issue 2 below.

  Issue 2) Software-Updater fails at the 2nd step during upgrade and
  generates the error in the attached screenshot. I disabled all third
  party ppas by going to the "Software & Updates" tool, clicked on
  "Other Software" and disabled anything that had a checkmark to it
  (namely the kisak-mesa/bionic ppa and the google chrome ppa, there was
  one other but I can't recall which one anymore), restarted, and ran
  again. This did not fix the overall issue but the prompt mentioning
  3rd party ppas as a possible cause no longer shows up in the dialog
  box and only suggests filing a bug.

  I also tried using sudo do-release-upgrade and it generates the exact
  same error as using the GUI interface. All packages are up to date and
  nothing is identified as possible packages left to update, third party
  or otherwise. I also don't see unnecessary packages sitting on the
  system.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.38
  ProcVersionSignature: Ubuntu 4.15.0-118.119-generic 4.15.18
  Uname: Linux 4.15.0-118-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.17
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Sep 30 22:15:34 2020
  InstallationDate: Installed on 2017-10-25 (1071 days ago)
  InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-10-01 (0 days ago)

  Edit: Added additional details for Issue 1 as my resolution steps were
  incredibly vague. Also added details on exactly where I went to
  disable the third party ppas and what ppas I recall disabling.

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