[Bug 1452146] [NEW] Failure using auto upgrade from 14.10 to 15.04

[Alec MacLean]

Public bug reported:

After a system restart and login using Unity desktop, the distro upgrade message displays.  Selected upgrade.
Packages analysed and downloaded, but then within the second stage process "Setting new software channels", the "Can't install ubuntu-desktop" message is displayed and requests a bug/error log is recorded here.

I do have and normally use the Cinnamon desktop.  This is still
installed, though I logged in using Unity in effort to allow the upgrade
(it has at least got as far as allowing reporting of this error).  A
similar issue occurred on upgrade from 14.04 to 14.10 and seemed to be
caused by having Cinnamon installed that time.

As Cinnamon is such a popular desktop choice, I don't know why Canonical
don't support this configuration during upgrades (if this is the problem
cause) - or even officially release a Cinnamon Ubuntu variation (e.g.
"Cibuntu").

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: ubuntu-release-upgrader-core 1:14.10.10
ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4
Uname: Linux 3.16.0-23-generic x86_64
ApportVersion: 2.14.7-0ubuntu8.4
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Wed May  6 07:55:04 2015
InstallationDate: Installed on 2013-04-27 (738 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to utopic on 2015-05-06 (0 days ago)
VarLogDistupgradeTermlog:

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


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

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https://bugs.launchpad.net/bugs/1452146

Title:
  Failure using auto upgrade from 14.10 to 15.04

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

Bug description:
  After a system restart and login using Unity desktop, the distro upgrade message displays.  Selected upgrade.
  Packages analysed and downloaded, but then within the second stage process "Setting new software channels", the "Can't install ubuntu-desktop" message is displayed and requests a bug/error log is recorded here.

  I do have and normally use the Cinnamon desktop.  This is still
  installed, though I logged in using Unity in effort to allow the
  upgrade (it has at least got as far as allowing reporting of this
  error).  A similar issue occurred on upgrade from 14.04 to 14.10 and
  seemed to be caused by having Cinnamon installed that time.

  As Cinnamon is such a popular desktop choice, I don't know why
  Canonical don't support this configuration during upgrades (if this is
  the problem cause) - or even officially release a Cinnamon Ubuntu
  variation (e.g. "Cibuntu").

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: ubuntu-release-upgrader-core 1:14.10.10
  ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4
  Uname: Linux 3.16.0-23-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8.4
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Wed May  6 07:55:04 2015
  InstallationDate: Installed on 2013-04-27 (738 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to utopic on 2015-05-06 (0 days ago)
  VarLogDistupgradeTermlog:

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