[Bug 1394659] Re: Cannot install 'ubuntu-desktop' when prompted to do a partial upgrade

[Brian Murray]

This has something do with a PPA you have enabled.

Broken libcogl15:amd64 Depends on libegl1-mesa-drivers [ amd64 ] < none -> 10.4.0~git20141112.7a82961b-0ubuntu0ricotz~trusty > ( libs )
  Considering libegl1-mesa-drivers:amd64 1 as a solution to libcogl15:amd64 -1
  Holding Back libcogl15:amd64 rather than change libegl1-mesa-drivers:amd64

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https://bugs.launchpad.net/bugs/1394659

Title:
  Cannot install 'ubuntu-desktop' when prompted to do a partial upgrade

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

Bug description:
  I just ran the standard Software Updater in ubuntu 14.04.1 LTS and I
  got a popup stating that not all updates could be installed, and that
  it could be due to the necessity of a partial upgrade. I installed all
  available updates, then tried to do a partial upgrade and got this
  message:

  Can't install 'ubuntu-desktop'

  It was impossible to install a required package. Please report this as
  a bug [...]

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.5
  ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8
  Uname: Linux 3.13.0-39-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Thu Nov 20 17:51:39 2014
  InstallationDate: Installed on 2014-11-14 (6 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: No upgrade log present (probably fresh install)

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