[Bug 1767775] Re: can't upgrade to 18.04 from 16.04

[dino99]

First revert the 'padoka' packages to the genuine ones (downgrade) and
similar 'third party' packages if they exist. Then try upgrading again,
or do a fresh install.

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

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https://bugs.launchpad.net/bugs/1767775

Title:
  can't upgrade to 18.04 from 16.04

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

Bug description:
  Updater cann't calculate needed changes

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.25
  ProcVersionSignature: Ubuntu 4.4.0-122.146-generic 4.4.117
  Uname: Linux 4.4.0-122-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.16
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Sun Apr 29 12:08:13 2018
  InstallationDate: Installed on 2016-07-27 (640 days ago)
  InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-04-29 (0 days ago)

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