[Bug 1309358] [NEW] upgrade fail 13.10 - 14.04

[Springnuts]

Public bug reported:

I updated 13.10 fully and then rebooted.

I then launched the software updater.

On launching updater I am offered upgrade from 13.10 to 14.04.

The release tool starts successfully.

I receive a warning message: "Third party sources disabled.  Some third
party entries in your sources.list were disabled. You can re-enable them
after the upgrade with the 'software-properties' tool or your package
manager."  I clicked the Close button.

The release tool then began fetching files.

Before this is complete the upgrader stops with the following failure
message: 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.

I am running the released version of 13.10.
I am not upgrading to a pre-release version of 14.04 - at least not knowingly.
I don't think I have any unofficial software packages (but how would I find out?).

I consider this a bug as the upgrader does not provide any way forward
(such as identifying how to tell what the problem is; or even offering
to solve it).

Regards

Springnuts.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: ubuntu-release-upgrader-core 1:0.205.5
ProcVersionSignature: Ubuntu 3.11.0-19.33-generic 3.11.10.5
Uname: Linux 3.11.0-19-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: i386
CrashDB: ubuntu
Date: Fri Apr 18 07:31:23 2014
InstallationDate: Installed on 2014-02-15 (61 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release i386 (20131016.1)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to saucy on 2014-04-18 (0 days ago)
VarLogDistupgradeTermlog:

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug dist-upgrade i386 saucy third-party-packages

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https://bugs.launchpad.net/bugs/1309358

Title:
  upgrade fail 13.10 - 14.04

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

Bug description:
  I updated 13.10 fully and then rebooted.

  I then launched the software updater.

  On launching updater I am offered upgrade from 13.10 to 14.04.

  The release tool starts successfully.

  I receive a warning message: "Third party sources disabled.  Some
  third party entries in your sources.list were disabled. You can re-
  enable them after the upgrade with the 'software-properties' tool or
  your package manager."  I clicked the Close button.

  The release tool then began fetching files.

  Before this is complete the upgrader stops with the following failure
  message: 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.

  I am running the released version of 13.10.
  I am not upgrading to a pre-release version of 14.04 - at least not knowingly.
  I don't think I have any unofficial software packages (but how would I find out?).

  I consider this a bug as the upgrader does not provide any way forward
  (such as identifying how to tell what the problem is; or even offering
  to solve it).

  Regards

  Springnuts.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: ubuntu-release-upgrader-core 1:0.205.5
  ProcVersionSignature: Ubuntu 3.11.0-19.33-generic 3.11.10.5
  Uname: Linux 3.11.0-19-generic i686
  NonfreeKernelModules: nvidia
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: i386
  CrashDB: ubuntu
  Date: Fri Apr 18 07:31:23 2014
  InstallationDate: Installed on 2014-02-15 (61 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release i386 (20131016.1)
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to saucy on 2014-04-18 (0 days ago)
  VarLogDistupgradeTermlog:

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