[Bug 1606301] Re: Upgrade to Ubuntu 16.10 from 15.10

[dino99]

Such dist-upgrade is not supported.
This is allowed (and tested) from LTS to next LTS; and from n to n+1.
All others cases are not tested nor supported, and are expected to fail.
Indeed before upgrading, the system needs to be set back to 'genuine' status (purging ppa) ; which is the case with your installation.

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1606301

Title:
  Upgrade to Ubuntu 16.10 from 15.10

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

Bug description:
  Upgrade from ubuntu 16.10 to from ubuntu 15.10 fails

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: ubuntu-release-upgrader-core 1:15.10.14.2
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Mon Jul 25 12:03:14 2016
  InstallationDate: Installed on 2015-04-29 (452 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  JournalErrors:
   No journal files were found.
   -- No entries --
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to wily on 2016-07-25 (0 days ago)
  VarLogDistupgradeTermlog:

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