[Bug 1385545] Re: 14.10 upgrade fails with the error : -" Could not calculate the upgrade" due to poor mirror

[Uwe Koch]

Hi, I finally could upgrade to 14.10, following the link below,
specifically the first solution:

$ grep ERROR /var/log/dist-upgrade/main.log
$ sudo apt-get remove conflicting-package-1 conflicting-package-2 ... 

Too bad that the failing calculation part of the upgrader gives no hint
about the problem that makes it fail.

http://askubuntu.com/questions/541246/unable-to-upgrade-
from-14-04-to-14-10-cannot-calculate-upgrades?answertab=votes#tab-top

I hope this helps others, too.

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https://bugs.launchpad.net/bugs/1385545

Title:
  14.10 upgrade fails with the error : -" Could not calculate the
  upgrade" due to poor mirror

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

Bug description:
  This error has occured on every system I have tried to upgrade to 14.10
  I have removed all locally installed applications and applications installled from remote repositories.
  I have also run autremove to get rid of orphaned packages

  I am assuming that a library has been updated as part of another application install
  and the version we have is ahead of the Ubuntu version, but I have no way of knowing which ones.

  This happens on both 32 and 64 bit desktop versions.

  I can't find any relevent logfiles that would indicate what went wrong

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.5
  ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Sat Oct 25 12:00:29 2014
  InstallationDate: Installed on 2014-04-22 (185 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2014-10-25 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update.manager.release.upgrades: 2014-04-23T09:04:46.257664

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