[Bug 1319161] [NEW] release upgrade (saucy->trusty): "unresolvable problem calculating updates", "could not determine which system updates are available"

[Klaus]

Public bug reported:

Upgrade failed at step 2 (registering new package sources) with error
msg mentioned in summary.

$ lsb_release -rd
Description:	Ubuntu 13.10
Release:	13.10

$ apt-cache policy ubuntu-release-upgrader-core
ubuntu-release-upgrader-core:
  Installiert:           1:0.205.6
  Installationskandidat: 1:0.220.2
  Versionstabelle:
     1:0.220.2 0
        500 http://de.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
 *** 1:0.205.6 0
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: ubuntu-release-upgrader-core 1:0.205.6
ProcVersionSignature: Ubuntu 3.11.0-20.35-generic 3.11.10.6
Uname: Linux 3.11.0-20-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
CrashDB: ubuntu
Date: Tue May 13 21:46:35 2014
InstallationDate: Installed on 2012-07-19 (662 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to saucy on 2014-05-13 (0 days ago)
VarLogDistupgradeTermlog:

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dist-upgrade saucy third-party-packages

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https://bugs.launchpad.net/bugs/1319161

Title:
  release upgrade (saucy->trusty): "unresolvable problem calculating
  updates", "could not determine which system updates are available"

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

Bug description:
  Upgrade failed at step 2 (registering new package sources) with error
  msg mentioned in summary.

  $ lsb_release -rd
  Description:	Ubuntu 13.10
  Release:	13.10

  $ apt-cache policy ubuntu-release-upgrader-core
  ubuntu-release-upgrader-core:
    Installiert:           1:0.205.6
    Installationskandidat: 1:0.220.2
    Versionstabelle:
       1:0.220.2 0
          500 http://de.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
   *** 1:0.205.6 0
          100 /var/lib/dpkg/status

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: ubuntu-release-upgrader-core 1:0.205.6
  ProcVersionSignature: Ubuntu 3.11.0-20.35-generic 3.11.10.6
  Uname: Linux 3.11.0-20-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: amd64
  CrashDB: ubuntu
  Date: Tue May 13 21:46:35 2014
  InstallationDate: Installed on 2012-07-19 (662 days ago)
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to saucy on 2014-05-13 (0 days ago)
  VarLogDistupgradeTermlog:

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