[Bug 1699251] [NEW] cannot upgrade to 16.04 even after updating everything else

[ishan durugkar]

Public bug reported:

I updated the system using apt-get as well as the GUI.
Then tried to upgrade ubuntu from 14.04 to 16.04 multiple times.
It is having some issues

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.9
ProcVersionSignature: Ubuntu 3.13.0-121.170-generic 3.13.11-ckt39
Uname: Linux 3.13.0-121-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.14.1-0ubuntu3.24
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Tue Jun 20 11:22:10 2017
InstallationDate: Installed on 2012-04-28 (1878 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2017-06-20 (0 days ago)
VarLogDistupgradeTermlog:

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dist-upgrade third-party-packages trusty trusty2xenial

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https://bugs.launchpad.net/bugs/1699251

Title:
  cannot upgrade to 16.04 even after updating everything else

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

Bug description:
  I updated the system using apt-get as well as the GUI.
  Then tried to upgrade ubuntu from 14.04 to 16.04 multiple times.
  It is having some issues

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.9
  ProcVersionSignature: Ubuntu 3.13.0-121.170-generic 3.13.11-ckt39
  Uname: Linux 3.13.0-121-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.14.1-0ubuntu3.24
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Tue Jun 20 11:22:10 2017
  InstallationDate: Installed on 2012-04-28 (1878 days ago)
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2017-06-20 (0 days ago)
  VarLogDistupgradeTermlog:

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