Public bug reported: just look at the verbouse information the installer has (supposed) to collect.
ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: update-manager 1:0.156.14.17 ProcVersionSignature: Ubuntu 3.2.0-67.101-generic 3.2.60 Uname: Linux 3.2.0-67-generic x86_64 ApportVersion: 2.0.1-0ubuntu17.6 Architecture: amd64 Date: Sun Aug 24 08:38:43 2014 GsettingsChanges: InstallationMedia: Ubuntu-Server 12.04 LTS "Precise Pangolin" - Release amd64 (20120424.1) MarkForUpload: True PackageArchitecture: all ProcEnviron: LANGUAGE=en_AU:en TERM=unknown PATH=(custom, no user) LANG=en_AU.UTF-8 SHELL=/bin/bash SourcePackage: update-manager Symptom: ubuntu-release-upgrader-core UpgradeStatus: Upgraded to precise on 2014-08-23 (0 days ago) VarLogDistupgradeAptlog: Log time: 2014-08-24 08:36:37.197044 Log time: 2014-08-24 08:36:42.149600 Log time: 2014-08-24 08:38:33.657421 Log time: 2014-08-24 08:38:53.223690 VarLogDistupgradeTermlog: ** Affects: update-manager (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug dist-upgrade precise -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1360708 Title: Cannot upgrade from Ubuntu 12.04 to 14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1360708/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs