Public bug reported: installed LTS 14.04 on laptop DELL inspiron 7000; when performing upgrade to 16.04: 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;
many broken packages; tried: sudo apt-get clean, sudo apt-get install -f, sudo dpkg --configure -a, sudo apt-get update, sudo rm /var/lib/apt/lists/* -vf: no result removed also some specific packages as: mplayer sudo apt remove postgresql-* admin* no result removed with synaptic broken packages no result thanks for any help ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: ubuntu-release-upgrader-core 1:0.220.10 ProcVersionSignature: Ubuntu 3.13.0-158.208-generic 3.13.11-ckt39 Uname: Linux 3.13.0-158-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.29 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: Unity Date: Wed Sep 12 07:16:07 2018 InstallationDate: Installed on 2014-01-31 (1684 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to trusty on 2018-09-12 (0 days ago) VarLogDistupgradeTermlog: mtime.conffile..etc.update.manager.release.upgrades: 2018-09-12T06:58:32.546024 ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug dist-upgrade third-party-packages trusty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1792080 Title: problem in upgradating from LTS 14.04 to LTS 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1792080/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs