[Bug 1493491] Re: Failure while attempting to upgrade from 14.04 to 14.10

[Jeremy Schwartz]

One more clue:  In /var/log/dist-upgrade/main.log, I see the message:

2015-09-08 11:33:49,918 ERROR Dist-upgrade failed: 'E:Error,
pkgProblemResolver::Resolve generated breaks, this may be caused by held
packages.'

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https://bugs.launchpad.net/bugs/1493491

Title:
  Failure while attempting to upgrade from 14.04 to 14.10

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

Bug description:
  The only error I get is:

  Could not calculate the upgrade

  An unresolvable problem occurred while calculating the upgrade.

  The upgrader does gracefully fail back to my current installation, but
  I am unable to complete the upgrade.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.7
  ProcVersionSignature: Ubuntu 3.13.0-63.103-generic 3.13.11-ckt25
  Uname: Linux 3.13.0-63-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.12
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: XFCE
  Date: Tue Sep  8 11:19:50 2015
  InstallationDate: Installed on 2014-12-22 (260 days ago)
  InstallationMedia: Xubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2015-09-08 (0 days ago)
  mtime.conffile..etc.update.manager.release.upgrades: 2015-09-08T11:05:29.181114

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