[Bug 1069133] Re: Get upgrade error 12.04 - 12.10 "Could not determine upgrade" - xorg from ppa

[Allan W. Macdonald]

@Brian:

Here I am coming over from bug 1920829.  I was at first tempted to
comment in the original bug but the warning message on the page,
"Remember, this bug report is a duplicate of bug #1069133. Comment here
only if you think the duplicate status is wrong" prompted me to come
here.  So, here I am!

Unfortunately, I tried the ppa-purge route and failed:

$ sudo ppa-purge ppa:oibaf/graphics-drivers
Updating packages lists
PPA to be removed: oibaf graphics-drivers
Warning:  Could not find package list for PPA: oibaf graphics-drivers
$

When I looked online for ppa:oibaf/graphics-drivers, it appears that the
packages in this ppa are no longer available for Bionic.  I really don't
know what "ppa-purge" actually does but what if the ppa is no longer
available on the server?  Is that why ppa-purge didn't work?  Is there a
way to get the missing package list somewhere else?  If I can get hold
of this list, where should it be located on my system and how can I get
ppa-purge to use this specially-obtained list?

Barring that, is it possible to just force a re-installation of the
official packages that was altered when the ppa:/oibaf/graphics-drivers
was installed?  Is there a way to find out from the logs which packages
need to be re-installed?

I have a question open here as well:
https://answers.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+question/696223
There is a plethora of additional information in this question.

I would be happy if the correct answer appeared here or there!

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https://bugs.launchpad.net/bugs/1069133

Title:
  Get upgrade error 12.04 - 12.10 "Could not determine upgrade" - xorg
  from ppa

Status in ubuntu-release-upgrader package in Ubuntu:
  Triaged
Status in ubuntu-release-upgrader package in Nexenta Operating System:
  New

Bug description:
  TEST CASE:
  1. Install a minimal Saucy amd64 (lxc container or VM)
  2. Install software-properties-common if it is not already installed and enable xorg-edgers PPA:
    $ sudo add-apt-repository ppa:xorg-edgers/ppa
  3. Install the task ubuntu-desktop
    $ sudo apt-get install ubuntu-desktop^
  4. Upgrade:
    $ sudo do-release-upgrade -d

  ACTUAL RESULT:
  Upgrade fails because it refuses to break the ABI of xorg.

  == Original Description ==
  Gets to the upgrade stage Setting new Software channels and the error window comes up on the Calculating the Changes part. Have got all security updates for 12.04 on and restarted but it still comes up. Using the proper software channels.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: ubuntu-release-upgrader-core (not installed)
  ProcVersionSignature: Ubuntu 3.5.0-17.26-generic 3.5.5
  Uname: Linux 3.5.0-17-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0.1-0ubuntu14
  Architecture: amd64
  Date: Sat Oct 20 17:16:19 2012
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  ProcEnviron:
   LANGUAGE=en_GB:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to precise on 2012-10-20 (0 days ago)

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