[Bug 1737494] [NEW] can not update 14.04 to 16.04

[drashtik]

Public bug reported:

I applied sudo apt-get update, upgrade and dist-upgrade. Later I entered
do-release-upgrade but it is not showing newer version of ubuntu. prompt
value is lts.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.9
ProcVersionSignature: Ubuntu 3.13.0-137.186-generic 3.13.11-ckt39
Uname: Linux 3.13.0-137-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.27
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Mon Dec 11 14:17:45 2017
InstallationDate: Installed on 2016-03-30 (621 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2017-12-11 (0 days ago)

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


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

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https://bugs.launchpad.net/bugs/1737494

Title:
  can not update 14.04 to 16.04

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

Bug description:
  I applied sudo apt-get update, upgrade and dist-upgrade. Later I
  entered do-release-upgrade but it is not showing newer version of
  ubuntu. prompt value is lts.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.9
  ProcVersionSignature: Ubuntu 3.13.0-137.186-generic 3.13.11-ckt39
  Uname: Linux 3.13.0-137-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.27
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Mon Dec 11 14:17:45 2017
  InstallationDate: Installed on 2016-03-30 (621 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2017-12-11 (0 days ago)

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