[Bug 1840386] Re: impossible calculate upgrade of version

[Chris Guiver]

Thank you for taking the time to report this bug and helping to make
Ubuntu better.

The message

--
This was likely caused by:
 * Unofficial software packages not provided by Ubuntu Please use the tool 'ppa-purge' from the ppa-purge package to remove software from a Launchpad PPA and try the upgrade again.

If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. ..
---

looks like it applies. A quick scan of your sources and I can see four
different releases for packages (12.04, 17.10, 18.04, 19.04) so you
should first remove the Unofficial software packages not provided by
Ubuntu (PPA's are 3rd party sources not provided by Ubuntu) then try
again.

I've marked this as incomplete because unofficial sources are still
there. If you believe I am in error, please return this the status to
new and leave a comment as to why.

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

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ubuntu-release-upgrader in
Ubuntu.
https://bugs.launchpad.net/bugs/1840386

Title:
  impossible calculate upgrade of version

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

Bug description:
  
  An unresolvable problem occurred while calculating the upgrade.

   This was likely caused by:
   * Unofficial software packages not provided by Ubuntu
  Please use the tool 'ppa-purge' from the ppa-purge 
  package to remove software from a Launchpad PPA and 
  try the upgrade again.

  If none of this applies, then please report this bug using the command
  'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. If you want
  to investigate this yourself the log files in '/var/log/dist-upgrade'
  will contain details about the upgrade. Specifically, look at
  'main.log' and 'apt.log'.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.34
  ProcVersionSignature: Ubuntu 4.15.0-58.64-generic 4.15.18
  Uname: Linux 4.15.0-58-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.7
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Aug 15 20:26:17 2019
  DistributionChannelDescriptor:
   # This is a distribution channel descriptor
   # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
   canonical-oem-somerville-xenial-amd64-20160624-2
  InstallationDate: Installed on 2018-08-07 (373 days ago)
  InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 20160624-10:47
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2019-08-15 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update-manager.release-upgrades: 2019-05-28T22:59:50.250963

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1840386/+subscriptions