[Bug 1355418] Re: upgrading to Kubuntu 14.04

[Peter Ludwig]

So - I tried it now with my production pc.

Same result.

Started with the upgrade of my trusty 12.04.5 LTS
Upgrade:
- was disabling old repos = ok
- Enabling new repos ... and then = error message

(I have to translate from german to english  sorry)
"It could not be determined which uprades are available. "

"An unresolvable problem occured 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.  .... "

The problem is: I do not know if I have "unofficial software packages"
installed. And why did it happen on my other machine too? I do not
assume that I have installed "unofficial" software on 2 machines. It
might happen once to try sth.

Is there a chance I can find out which package this could be???

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https://bugs.launchpad.net/bugs/1355418

Title:
  upgrading to Kubuntu 14.04

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

Bug description:
  Upgrading distribution to Kububtu from 12.04.5 LTS to 14.04- Could not
  calculate the upgrade: An unresolved problem occured while calculating
  the upgrade. This can be caused by: * Upgrading to a pre-release
  version of Ubuntu *Running the current pre-release version *Unofficial
  software packages not provided by ubuntu

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