[Bug 1132016] Re: ubuntu-release-upgrader-core could not calculate the upgrade

[sampo555]

Thanks for taking the time to report this bug and helping to make Ubuntu
better. Could you please add the log files from '/var/log/dist-upgrade/'
to this bug report as separate attachments? Once done please change the
status of this bug back to New by clicking "Incomplete" in the yellow
bar at the top of the page. Thanks in advance.

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1132016

Title:
  ubuntu-release-upgrader-core could not calculate the upgrade

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

Bug description:
  When updating from Kubuntu 12.04 to 12.10, got the message -
  "
  Could not calculate the upgrade
  An unresolvable problem occurred while calculating the 
  upgrade: The package 'kubuntu-desktop' is marked for 
  removal but it is on the removal blacklist. This can be 
  caused by: * Upgrading to a prelease version of Ubuntu 
  * Running the current pre-release version of Ubuntu * 
  Unofficial software packages not provided by Ubuntu If 
  non of this applies, then please report this bug using the 
  command 'ubuntu-bug ubuntu-release-upgrader-core' in a 
  terminal.
  "

  I know that neither
  * Upgrading to a prelease version of Ubuntu 
  * Running the current pre-release version of Ubuntu 
  apply, but I don't know about 
  * Unofficial software packages not provided by Ubuntu
  as I do have some non-Ubuntu/Canonical supplied software installed.  I've not had this problem with any previous version upgrade, and the only thing I've installed since the 12.04 version upgrade was possibly either Chrome or Chromium.

  graeme at dust-puppy:~$ lsb_release -rd
  Description:    Ubuntu 12.04 LTS
  Release:        12.04
  graeme at dust-puppy:~$ apt-cache policy ubuntu-release-upgrader-core
  ubuntu-release-upgrader-core:
    Installed: (none)
    Candidate: 1:0.190.1
    Version table:
       1:0.190.1 0
          500 http://archive.ubuntu.com/ubuntu/ quantal/main amd64 Packages
  graeme at dust-puppy:~$ apt-cache policy kubuntu-desktop
  kubuntu-desktop:
    Installed: 1.254
    Candidate: 1.254
    Version table:
   *** 1.254 0
          100 /var/lib/dpkg/status
  graeme at dust-puppy:~$

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