[Bug 1776790] Re: I cannot upgrade to 17.10 from 16.04

[Brian Murray]

Please disable the ubuntu-toolchain-r test PPA using ppa-purge. It
provides packages which are greater than the version to which you are
trying to upgrade.

  Installing libgfortran4 as Depends of liblapack3
    libgfortran4:amd64 Depends on gcc-7-base [ amd64 ] < 7.3.0-21ubuntu1~16.04 > ( libs ) (= 7.2.0-8ubuntu3.2) can't be satisfied!


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

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https://bugs.launchpad.net/bugs/1776790

Title:
  I cannot upgrade to 17.10 from 16.04

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

Bug description:
  I am unable to upgrade ubuntu from version 16.04 to 17.10 and I am not
  sure why

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.25
  ProcVersionSignature: Ubuntu 4.13.0-45.50~16.04.1-generic 4.13.16
  Uname: Linux 4.13.0-45-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Wed Jun 13 20:55:13 2018
  InstallationDate: Installed on 2017-12-13 (182 days ago)
  InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-06-14 (0 days ago)
  mtime.conffile..etc.update-manager.release-upgrades: 2018-06-13T20:27:37.104543

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