Public bug reported: I'm using ubuntu 12.04 LTS and trying to upgrade to Ubuntu 14.04 LTS.
I have all upgrades for my current version, but when I try to upgrade it returns: Checking package manager Reading package lists... Done Building dependency tree Reading state information... Done Building data structures... Done Calculating the changes Calculating the changes Could not calculate the upgrade An unresolvable problem occurred while calculating the upgrade. This can be caused by: * Upgrading to a pre-release version of Ubuntu * Running the current pre-release version of Ubuntu * Unofficial software packages not provided by Ubuntu If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. So, here I am. I already try to remove all ppa's that I added. And a few other things. Any advice or response for this bug? Thanks in advance ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: update-manager 1:0.156.14.18 ProcVersionSignature: Ubuntu 3.13.0-51.84~precise1-generic 3.13.11-ckt18 Uname: Linux 3.13.0-51-generic x86_64 ApportVersion: 2.0.1-0ubuntu17.8 Architecture: amd64 Date: Fri May 1 16:54:00 2015 GsettingsChanges: com.ubuntu.update-manager first-run false com.ubuntu.update-manager launch-time 1430509684 com.ubuntu.update-manager show-details true com.ubuntu.update-manager window-height 658 com.ubuntu.update-manager window-width 617 InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.1) MarkForUpload: True PackageArchitecture: all ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: update-manager Symptom: ubuntu-release-upgrader-core UpgradeStatus: Upgraded to precise on 2015-05-01 (0 days ago) ** Affects: update-manager (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug dist-upgrade precise running-unity -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1450900 Title: I just can't do a release upgrade. No matter what I try. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1450900/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs