[Bug 1790820] Re: i can not upgrade from 16.04 to 18.04.01

[Brian Murray]

*** This bug is a duplicate of bug 1611737 ***
    https://bugs.launchpad.net/bugs/1611737

** This bug has been marked a duplicate of bug 1611737
   Can't upgrade from a release if ros packages are  installed from ROS servers

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https://bugs.launchpad.net/bugs/1790820

Title:
  i can not upgrade from 16.04 to 18.04.01

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

Bug description:
  I have disabled all the repositories in settings, only Ubuntu official repo is enabled
  Checking the output of "ubuntu-support-status" gives me about 270 unsupported packages, most of them are "ros-kinetic-*"

  How can I recognize which packet makes troubles?

  I can by every probe to upgrade the message:
  Could not calculate the upgrade

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.25
  ProcVersionSignature: Ubuntu 4.15.0-33.36~16.04.1-generic 4.15.18
  Uname: Linux 4.15.0-33-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Wed Sep  5 10:40:07 2018
  InstallationDate: Installed on 2017-04-09 (513 days ago)
  InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-09-05 (0 days ago)
  VarLogDistupgradeTermlog:

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