[Bug 1792080] Re: problem in upgradating from LTS 14.04 to LTS 16.04

[Ubuntu Foundations Team Bug Bot]

** Tags added: trusty2xenial

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https://bugs.launchpad.net/bugs/1792080

Title:
  problem in upgradating from LTS 14.04 to LTS 16.04

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

Bug description:
  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

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