[Bug 1785355] Re: Could not calculate the upgrade An unresolvable problem occurred while calculating the upgrade. This can be caused by: * Upgrading to a pre-release version of Ubuntu * Running the current pre-release version of Ubuntu * Unofficial software packages not provided by Ubuntu If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal.

[William Rodriguez]

Thanks for the reply.

I fixed the problem by updating my version of 16.04 before upgrading to 
18.04.

As a side question...can you tell me why the 18.04 ISO file I downloaded 
from the Ubuntu site does not install the upgrade.  I have tried two 
different downloads of 18.04.1 and both get to the splash screen and 
just sit there for about an hour before I just gave up on it and shut 
off installation.


On 08/06/2018 08:51 AM, Brian Murray wrote:
> Looking at your VarLogDistUpgradeMainlog.txt it looks like you are
> missing the xubuntu-desktop meta package.
>
> 2018-08-03 19:16:05,600 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
> 2018-08-03 19:16:05,600 DEBUG guessing 'xubuntu-core' as missing meta-pkg
> 2018-08-03 19:16:05,735 DEBUG marked_install: 'xubuntu-core' -> 'True'
>
> Please try installing the xubuntu-desktop package and upgrading again.
> Thanks in advance.
>
> ** Changed in: ubuntu-release-upgrader (Ubuntu)
>         Status: Confirmed => Incomplete
>
> ** Summary changed:
>
> - Could not calculate the upgrade  An unresolvable problem occurred while calculating the upgrade.   This can be caused by:  * Upgrading to a pre-release version of Ubuntu  * Running the current pre-release version of Ubuntu  * Unofficial software packages not provided by Ubuntu  If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal.
> + Could not calculate the upgrade due to missing xubuntu-desktop metapkg
>

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https://bugs.launchpad.net/bugs/1785355

Title:
  Could not calculate the upgrade due to missing xubuntu-desktop metapkg

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

Bug description:
  Could not calculate the upgrade

  An unresolvable problem occurred while calculating the upgrade.

   This can be caused by:
   * Upgrading to a pre-release version of Ubuntu
   * Running the current pre-release version of Ubuntu
   * Unofficial software packages not provided by Ubuntu

  If none of this applies, then please report this bug using the command
  'ubuntu-bug ubuntu-release-upgrader-core' in a terminal.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.25
  ProcVersionSignature: Ubuntu 4.4.0-131.157-generic 4.4.134
  Uname: Linux 4.4.0-131-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: XFCE
  Date: Fri Aug  3 19:16:54 2018
  InstallationDate: Installed on 2017-05-01 (459 days ago)
  InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-08-04 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update-manager.release-upgrades: 2018-07-27T10:25:11.335233

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