[Bug 1309485] [NEW] Can't install ubuntu-desktop

[Martins K.]

Public bug reported:

I was updating my system from Ubuntu 13.10 to 14.04. Unfortunately, the
upgrade process failed stating that the system could be in an unusable
state.

Afterwards launching update-manager again, I was offered to perform a partial upgrade. Yet it failed too, stating 
"Can't install 'ubuntu-desktop'
It was impossible to install a required package. Please report this as a bug using 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal". So, here it goes.

Meanwhile, in the terminal ubuntu-manager had the following output:
"Starting pkgProblemResolver with broken count: 1
Starting 2 pkgProblemResolver with broken count: 1
Investigating (0) ubuntu-desktop [ amd64 ] < 1.325 > ( metapackages )
Broken ubuntu-desktop:amd64 Depends on ubuntu-session [ amd64 ] < none -> 3.9.90-0ubuntu12 > ( gnome )
  Considering ubuntu-session:amd64 1 as a solution to ubuntu-desktop:amd64 0
  Removing ubuntu-desktop:amd64 rather than change ubuntu-session:amd64
Done"

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.2
ProcVersionSignature: Ubuntu 3.11.0-19.33-generic 3.11.10.5
Uname: Linux 3.11.0-19-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: GNOME
Date: Fri Apr 18 14:37:49 2014
InstallationDate: Installed on 2012-12-18 (485 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2014-04-18 (0 days ago)
VarLogDistupgradeTermlog:

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


** Tags: amd64 apport-bug dist-upgrade trusty

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https://bugs.launchpad.net/bugs/1309485

Title:
  Can't install ubuntu-desktop

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

Bug description:
  I was updating my system from Ubuntu 13.10 to 14.04. Unfortunately,
  the upgrade process failed stating that the system could be in an
  unusable state.

  Afterwards launching update-manager again, I was offered to perform a partial upgrade. Yet it failed too, stating 
  "Can't install 'ubuntu-desktop'
  It was impossible to install a required package. Please report this as a bug using 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal". So, here it goes.

  Meanwhile, in the terminal ubuntu-manager had the following output:
  "Starting pkgProblemResolver with broken count: 1
  Starting 2 pkgProblemResolver with broken count: 1
  Investigating (0) ubuntu-desktop [ amd64 ] < 1.325 > ( metapackages )
  Broken ubuntu-desktop:amd64 Depends on ubuntu-session [ amd64 ] < none -> 3.9.90-0ubuntu12 > ( gnome )
    Considering ubuntu-session:amd64 1 as a solution to ubuntu-desktop:amd64 0
    Removing ubuntu-desktop:amd64 rather than change ubuntu-session:amd64
  Done"

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.2
  ProcVersionSignature: Ubuntu 3.11.0-19.33-generic 3.11.10.5
  Uname: Linux 3.11.0-19-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: GNOME
  Date: Fri Apr 18 14:37:49 2014
  InstallationDate: Installed on 2012-12-18 (485 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2014-04-18 (0 days ago)
  VarLogDistupgradeTermlog:

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