[Bug 1902767] Re: do-release-upgrade exits with "An unresolvable problem occurred while calculating the upgrade"

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1902767

Title:
  do-release-upgrade exits with "An unresolvable problem occurred while
  calculating the upgrade"

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

Bug description:
  This error comes up both before and after removing two ppas using ppa-
  purge. Note that I am using a low-latency kernel with bionic. I would
  suspect this but I upgraded another system running this kernel with no
  problems.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.40
  ProcVersionSignature: Ubuntu 5.4.0-52.57~18.04.1-lowlatency 5.4.65
  Uname: Linux 5.4.0-52-lowlatency x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.9-0ubuntu7.18
  Architecture: amd64
  CrashDB: ubuntu
  Date: Tue Nov  3 13:18:42 2020
  InstallationDate: Installed on 2020-06-07 (148 days ago)
  InstallationMedia: Ubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64 (20200203.1)
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  Symptom: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-11-03 (0 days ago)

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