[Bug 1715378] Re: Upgrade from 16.06 to 17.04 was unable to upgrade unity-desktop

[Brian Murray]

In VarLogDistupgradeMainlog.txt we can see the following:

2017-09-06 06:36:06,867 DEBUG none of the '['ubuntu-desktop', 'kubuntu-desktop', 'xubuntu-core', 'xubuntu-desktop', 'ubuntustudio-desktop', 'mythbuntu-desktop', 'kubuntu-netbook', 'lubuntu-core', 'lubuntu-desktop', 'ubuntu-gnome-desktop', 'ubuntu-mate-core', 'ubuntu-mate-cloudtop', 'ubuntu-mate-desktop', 'ubuntukylin-desktop']' meta-pkgs installed
2017-09-06 06:36:06,867 DEBUG guessing 'ubuntu-desktop' as missing meta-pkg

Please try manually reinstalling 'ubuntu-desktop', since you are using
the Unity desktop, and then try the upgrade again.

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

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https://bugs.launchpad.net/bugs/1715378

Title:
  Upgrade from 16.06 to 17.04 was unable to upgrade unity-desktop

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

Bug description:
  While "Preparing to upgrade" from 16.04 to 17.04, the update manager
  reported that it could not upgrade unity-desktop. It claimed I had
  changed /etc/update-manager/release-upgrades. I have not manually
  altered that file.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.22
  ProcVersionSignature: Ubuntu 4.4.0-93.116-generic 4.4.79
  Uname: Linux 4.4.0-93-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.1-0ubuntu2.10
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Wed Sep  6 06:36:24 2017
  InstallationDate: Installed on 2016-06-01 (461 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2017-09-06 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update-manager.release-upgrades: 2017-09-05T14:42:54.033549

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