[Bug 1790646] [NEW] do-release-upgrade fails and no helpful info on how to continue

[Jona Sassenhagen]

Public bug reported:

16.04 -> 18.04 do-release-upgrade fails and tells me that I should
consider if I am doing any of:

* Upgrading to a pre-release version of Ubuntu
* Running the current pre-release version of Ubuntu
* Unofficial software packages not provided by Ubuntu

It's not 1 or 2. But for 3, I have 100s of packages installed, should I
go through all of them by hand? Is there a principled way of identifying
which could be the source of the problem? I have CUDA installed, from
NVIDIA's sources, but I would prefer to not wildly experiment with
removing and reinstalling something as annoying to install as CUDA.

Apologies if the answer is simply "yes" - I am just thinking that there
probably is an easier way of proceeding from here, which do-release-
upgrade could more helpfully inform the user about.

1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About Ubuntu
Ubuntu 16.04.5 LTS
2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Software Center
N: Unable to locate package do-release-upgrade
N: Unable to locate package ubuntu-release-upgrader
3) What you expected to happen
Upgrade to 18.04
4) What happened instead
Above error message :(

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.25
ProcVersionSignature: Ubuntu 4.15.0-33.36~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-33-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CrashDB: ubuntu
Date: Tue Sep  4 15:24:40 2018
InstallationDate: Installed on 2016-08-04 (761 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2018-09-04 (0 days ago)

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


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

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https://bugs.launchpad.net/bugs/1790646

Title:
  do-release-upgrade fails and no helpful info on how to continue

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

Bug description:
  16.04 -> 18.04 do-release-upgrade fails and tells me that I should
  consider if I am doing any of:

  * Upgrading to a pre-release version of Ubuntu
  * Running the current pre-release version of Ubuntu
  * Unofficial software packages not provided by Ubuntu

  It's not 1 or 2. But for 3, I have 100s of packages installed, should
  I go through all of them by hand? Is there a principled way of
  identifying which could be the source of the problem? I have CUDA
  installed, from NVIDIA's sources, but I would prefer to not wildly
  experiment with removing and reinstalling something as annoying to
  install as CUDA.

  Apologies if the answer is simply "yes" - I am just thinking that
  there probably is an easier way of proceeding from here, which do-
  release-upgrade could more helpfully inform the user about.

  1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About Ubuntu
  Ubuntu 16.04.5 LTS
  2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Software Center
  N: Unable to locate package do-release-upgrade
  N: Unable to locate package ubuntu-release-upgrader
  3) What you expected to happen
  Upgrade to 18.04
  4) What happened instead
  Above error message :(

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.25
  ProcVersionSignature: Ubuntu 4.15.0-33.36~16.04.1-generic 4.15.18
  Uname: Linux 4.15.0-33-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CrashDB: ubuntu
  Date: Tue Sep  4 15:24:40 2018
  InstallationDate: Installed on 2016-08-04 (761 days ago)
  InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-09-04 (0 days ago)

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