[Bug 1279762] Re: upgrade to 14.04 from 13.10 failed - cinnamon fails to upgrade

[Jean-Baptiste Lallement]

For the record, you can find why it fails on cinnamon from the log file
/var/log/dist-upgrade/apt.log

At the end you'll see apt tries to find an upgrade path for libclutter and libcogl and fails 
---
Investigating (9) libcogl15 [ amd64 ] < none -> 1.16.2-1 > ( libs )
Broken libcogl15:amd64 Breaks on libclutter-1.0-0 [ amd64 ] < 1.14.4-3 -> 1.16.0-1 > ( libs ) (< 1.15)
  Considering libclutter-1.0-0:amd64 50 as a solution to libcogl15:amd64 56
  Upgrading libclutter-1.0-0:amd64 due to Breaks field in libcogl15:amd64
Investigating (9) libclutter-1.0-0 [ amd64 ] < 1.14.4-3 -> 1.16.0-1 > ( libs )
Broken libclutter-1.0-0:amd64 Breaks on libcogl12 [ amd64 ] < 1.14.0-2 > ( libs )
  Considering libcogl12:amd64 65 as a solution to libclutter-1.0-0:amd64 50
  Holding Back libclutter-1.0-0:amd64 rather than change libcogl12:amd64
---

If you search backward into this same log file, you'll find why it wants to keep libcogl12
---
Broken cinnamon:amd64 Depends on libmuffin0 [ amd64 ] < 2.0.5-20131124003925-saucy > ( universe/libs )
  Considering libmuffin0:amd64 2 as a solution to cinnamon:amd64 65
  Added libmuffin0:amd64 to the remove list
  Fixing cinnamon:amd64 via keep of gir1.2-muffin-3.0:amd64
  Fixing cinnamon:amd64 via keep of libcogl-pango12:amd64
  Fixing cinnamon:amd64 via keep of libcogl12:amd64
  Fixing cinnamon:amd64 via keep of libmuffin0:amd64
---

And cinnamon won't be upgraded, because it doesn't exist in Trusty only trusty-proposed (do not enable -proposed it is only for testing purpose and things there will likely break your system)
⟫ rmadison cinnamon
 cinnamon | 1.7.4-2ubuntu4   | saucy/universe           | source, amd64, armhf, i386, powerpc
 cinnamon | 1.7.4-2ubuntu4.1 | saucy-updates/universe   | source, amd64, armhf, i386, powerpc
 cinnamon | 1.7.4-2ubuntu6   | trusty-proposed/universe | source, amd64, arm64, armhf, i386, powerpc, ppc64el

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https://bugs.launchpad.net/bugs/1279762

Title:
  upgrade to 14.04 from 13.10 failed - cinnamon fails to upgrade

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

Bug description:
  from 13.10 to 14.04

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: ubuntu-release-upgrader-core 1:0.205.4
  ProcVersionSignature: Ubuntu 3.11.0-17.31-generic 3.11.10.3
  Uname: Linux 3.11.0-17-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: amd64
  CrashDB: ubuntu
  Date: Thu Feb 13 19:49:07 2014
  InstallationDate: Installed on 2014-01-08 (36 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to saucy on 2014-02-13 (0 days ago)
  VarLogDistupgradeTermlog:

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