[Bug 1388884] Re: Can't upgrade fro Ubuntu 12.04.05 LTS to 14.04.1 LTS though I disabled all external repositories in sources.list and deleted sources.list.d folder

[Kunal Shah]

kunal at everest:/etc/apt$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 12.04.5 LTS
Release:	12.04
Codename:	precise
kunal at everest:/etc/apt$

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https://bugs.launchpad.net/bugs/1388884

Title:
  Can't upgrade fro Ubuntu 12.04.05 LTS to 14.04.1 LTS though I disabled
  all external repositories in sources.list and deleted sources.list.d
  folder

Status in “update-manager” package in Ubuntu:
  New

Bug description:
  I have been trying constantly and failing each time when I try to upgrade fro Ubuntu 12.04.05 LTS to 14.04.1 LTS.
  I disabled all external repositories in sources.list and deleted sources.list.d folder so I don't see any error in the upgrade manager but the upgrade doesn't work.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.14.17
  ProcVersionSignature: Ubuntu 3.13.0-39.66~precise1-generic 3.13.11.8
  Uname: Linux 3.13.0-39-generic x86_64
  ApportVersion: 2.0.1-0ubuntu17.7
  Architecture: amd64
  Date: Mon Nov  3 07:27:54 2014
  GsettingsChanges:
   
  InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
  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 2014-11-03 (0 days ago)
  VarLogDistupgradeTermlog:

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