[Bug 1244365] Re: fails to install, rolls back, does not say why or what package is to blame.

[Brian Murray]

The packages to blame are the qemu-* ones that you have installed from
somewhere other than the official Ubuntu archive.  The release upgrader
is unable to calculate the upgrade because of these packages.  If you
switch to the qemu packages from the official Ubuntu archive you should
be able to complete the upgrade successfully.  Thanks and good luck!

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

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https://bugs.launchpad.net/bugs/1244365

Title:
  fails to install, rolls back, does not say why or what package is to
  blame.

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

Bug description:
  Description:	Ubuntu 12.10
  Release:	12.10

  Expected upgrade.

  Upgrade failed.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: ubuntu-release-upgrader-core 1:0.190.8
  ProcVersionSignature: Ubuntu 3.5.0-31.52-generic 3.5.7.11
  Uname: Linux 3.5.0-31-generic x86_64
  ApportVersion: 2.6.1-0ubuntu12
  Architecture: amd64
  Date: Thu Oct 24 09:47:29 2013
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2011-05-04 (903 days ago)
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to quantal on 2013-10-24 (0 days ago)
  VarLogDistupgradeTermlog:

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