[Bug 1908098] Re: do-release-upgrade stuck 18.04 -> 20.04

[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/1908098

Title:
  do-release-upgrade stuck 18.04 -> 20.04

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

Bug description:
  It previously complained about foreign ppa making it be stuck, but I
  uninstalled everything not from 'bionic' and now it doesn't say that
  but it's still stuck.

  ```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 1:18.04.41
  ProcVersionSignature: Ubuntu 4.15.0-128.131-generic 4.15.18
  Uname: Linux 4.15.0-128-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.9-0ubuntu7.20
  Architecture: amd64
  CrashDB: ubuntu
  Date: Mon Dec 14 12:04:03 2020
  InstallationDate: Installed on 2018-05-01 (957 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-12-14 (0 days ago)

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