[Bug 1681197] Re: 16.04 - 16.10 to 17.04 upgrade fail

[Brian Murray]

Even though you have all the 3rd party options unticked you still have
xorg packages from a PPA and the versions of those packages are greater
than the release to which you are trying to upgrade so the upgrade
calculation fails.  You'll need to use ppa-purge to remove that PPA.

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

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https://bugs.launchpad.net/bugs/1681197

Title:
  16.04 - 16.10 to 17.04 upgrade fail

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

Bug description:
  16.04 - 16.10

  Broke my network

  after removing the symlink  /etc/resolv.conf

  it worked again next step

  16.10 - 17.04 , but it refuses to upgrade

  all 3rd party options unticked

  ProblemType: Bug
  DistroRelease: Ubuntu 16.10
  Package: ubuntu-release-upgrader-core 1:16.10.10
  Uname: Linux 4.10.8-041008-generic x86_64
  ApportVersion: 2.20.3-0ubuntu8.2
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Sun Apr  9 19:58:26 2017
  InstallationDate: Installed on 2016-04-22 (352 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to yakkety on 2017-04-09 (0 days ago)
  VarLogDistupgradeTermlog:

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