[Bug 1012643] Re: Ubuntu fails to upgrade to 12.04: "Could not calculate the upgrade"

[Sky Adams]

This may be a duplicate of a pre-existing bug, but it's impossible to
tell since the message is so vague.

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https://bugs.launchpad.net/bugs/1012643

Title:
  Ubuntu fails to upgrade to 12.04: "Could not calculate the upgrade"

Status in “update-manager” package in Ubuntu:
  New

Bug description:
  Could not calcute the upgrade

  An unresolvable problem occurred while calculate the upgrade:
  E:Error, pkgProblemResolve::Resolve generate breaks,this may be caused by held packages.

  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 applices, then please report this bug using the command 'ubuntu-bug update-manager' in a terminal
  --------------------------------------------------------------------------------------------------------------------------------------------------------------

  I am not running a pre-release version and it's impossible to tell if
  any Unoffical software packages might be interfering without
  uninstalling everything.

  I'm running the x64 version of Kubuntu 11.10

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