Public bug reported: Removing Flight Gear fixes the issue.
--- Broken flightgear:amd64 Riippuvuudet on libopenscenegraph99 [ amd64 ] < none -> 3.2.0~rc1-4 > ( universe/libs ) Considering libopenscenegraph99:amd64 3 as a solution to flightgear:amd64 -1 MarkKeep flightgear [ amd64 ] < 2.4.0-1 -> 3.0.0-1 > ( universe/games ) FU=0 Holding Back flightgear:amd64 rather than change libopenscenegraph99:amd64 --- ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: update-manager 1:0.156.14.13 ProcVersionSignature: Ubuntu 3.11.0-19.33~precise1-generic 3.11.10.5 Uname: Linux 3.11.0-19-generic x86_64 ApportVersion: 2.0.1-0ubuntu17.6 Architecture: amd64 Date: Wed Apr 16 09:10:48 2014 GsettingsChanges: com.ubuntu.update-manager first-run false com.ubuntu.update-manager launch-time 1397628529 com.ubuntu.update-manager window-height 636 com.ubuntu.update-manager window-width 600 MarkForUpload: True PackageArchitecture: all SourcePackage: update-manager Symptom: ubuntu-release-upgrader-core UpgradeStatus: Upgraded to precise on 2014-04-16 (0 days ago) VarLogDistupgradeTermlog: ** Affects: update-manager (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug dist-upgrade precise running-unity ** Attachment removed: "VarLogDistupgradeAptlog.txt" https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1308338/+attachment/4085091/+files/VarLogDistupgradeAptlog.txt ** Attachment removed: "VarLogDistupgradeAptclonesystemstate.tar.gz" https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1308338/+attachment/4085090/+files/VarLogDistupgradeAptclonesystemstate.tar.gz ** Attachment removed: "VarLogDistupgradeMainlog.txt" https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1308338/+attachment/4085093/+files/VarLogDistupgradeMainlog.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1308338 Title: Ubuntu 12.04 LTS -> 14.04 LTS upgrade fails if Flight Gear installed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1308338/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs