[Bug 1535433] [NEW] Try to upgrade from 14.04 LTS to next version 15.04 (after switched from LTS to any new Version in the updater tool)

[karandras]

Public bug reported:

After I have switched from LTS (14.04) to update channel (any new
version), I had clicked on upgrade (in the upgrader tool) to 15.04
(after a restart).

The upgrader tool check for new software and tried to set new software
channels in a second step. During this the error message raised. The
Upgrade failed and my system were set back to 14.04.


Additional:

Under /etc/apt/ the updater process had added new sources.lists (after
the roll back as sources.list.distUpgrade) for the dist-upgrade and for
my comprehension they seem correct.


Details:

Description:    Ubuntu 14.04.3 LTS
Release:        14.04


Hope this helps to locate the issue.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8
ProcVersionSignature: Ubuntu 3.13.0-74.118-generic 3.13.11-ckt30
Uname: Linux 3.13.0-74-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CrashDB: ubuntu
Date: Mon Jan 18 21:03:38 2016
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-01-18 (0 days ago)
VarLogDistupgradeTermlog:
 
mtime.conffile..etc.update.manager.release.upgrades: 2016-01-15T10:21:24.008473

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


** Tags: amd64 apport-bug dist-upgrade trusty

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https://bugs.launchpad.net/bugs/1535433

Title:
  Try to upgrade from 14.04 LTS to next version 15.04 (after switched
  from LTS to any new Version in the updater tool)

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

Bug description:
  After I have switched from LTS (14.04) to update channel (any new
  version), I had clicked on upgrade (in the upgrader tool) to 15.04
  (after a restart).

  The upgrader tool check for new software and tried to set new software
  channels in a second step. During this the error message raised. The
  Upgrade failed and my system were set back to 14.04.

  
  Additional:

  Under /etc/apt/ the updater process had added new sources.lists (after
  the roll back as sources.list.distUpgrade) for the dist-upgrade and
  for my comprehension they seem correct.

  
  Details:

  Description:    Ubuntu 14.04.3 LTS
  Release:        14.04

  
  Hope this helps to locate the issue.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  ProcVersionSignature: Ubuntu 3.13.0-74.118-generic 3.13.11-ckt30
  Uname: Linux 3.13.0-74-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  CrashDB: ubuntu
  Date: Mon Jan 18 21:03:38 2016
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2016-01-18 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update.manager.release.upgrades: 2016-01-15T10:21:24.008473

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