[Bug 1314739] Re: Unable to upgrade from 13.10 to 14.04

[Rob Hills]

Many thanks Brian for pointing this out.  For anyone else who finds this
via a search engine, I fixed my problem with the help of some
information from http://askubuntu.com/questions/202730/how-to-fix-the-
unable-to-calculate-upgrade-issue-when-upgrading-from-12-04-to.
Specifically I executed:

sudo apt-get remove xserver-xorg-video-*

to remove an XVideo driver that was blocking my upgrade.   After this I
was able to complete a successful upgrade from 13.10 to 14.04

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https://bugs.launchpad.net/bugs/1314739

Title:
  Unable to upgrade from 13.10 to 14.04

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

Bug description:
  When I execute:
  sudo do-release-upgrade

  in the terminal, it gets to the point where it says:
    Calculating the changes
    Calculating the changes

  and then says:
  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. 

  As none of the above applies, I'm mystified as to why this is
  happening.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: ubuntu-release-upgrader-core 1:0.205.6
  ProcVersionSignature: Ubuntu 3.11.0-19.33-generic 3.11.10.5
  Uname: Linux 3.11.0-19-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: amd64
  CrashDB: ubuntu
  Date: Thu May  1 01:34:17 2014
  InstallationDate: Installed on 2012-08-29 (609 days ago)
  InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to saucy on 2014-04-30 (0 days ago)

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