[Bug 1826876] Re: Unable to upgrade to Ubuntu 18.10 from 18.04

[Brian Murray]

You appear to have graphics drivers installed from a PPA. Did you
receive a message about using 'ppa-purge' to remove third party
packages?

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

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https://bugs.launchpad.net/bugs/1826876

Title:
  Unable to upgrade to Ubuntu 18.10 from 18.04

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

Bug description:
  Ubuntu is unable to update with only default repositories.

  Description:	Ubuntu 18.04.2 LTS
  Release:	18.04

  Expectation:

  Complete upgrade to Ubuntu 18.10

  What happened:

  An unresolvable problem occurred while calculating the upgrade.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.31
  ProcVersionSignature: Ubuntu 4.15.0-48.51-generic 4.15.18
  Uname: Linux 4.15.0-48-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.6
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Mon Apr 29 14:45:04 2019
  InstallationDate: Installed on 2017-12-10 (504 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2019-04-29 (0 days ago)
  mtime.conffile..etc.update-manager.release-upgrades: 2019-02-07T09:15:23.341267

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