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

[Yann Lossouarn]

In fact I tried :
sudo add-apt-repository ppa:xorg-edgers/ppa
sudo apt-get update
sudo apt-get install xorg-server
sudo apt-get upgrade
sudo ppa-purge xorg-edgers
...
and at the last command gives this message :
'
Certains paquets ne peuvent être installés. Ceci peut signifier
que vous avez demandé l'impossible, ou bien, si vous utilisez
la distribution unstable, que certains paquets n'ont pas encore
été créés ou ne sont pas sortis d'Incoming.
L'information suivante devrait vous aider à résoudre la situation : 

Les paquets suivants contiennent des dépendances non satisfaites :
 libdrm-dev : Dépend: libkms1 (= 2.4.46-1ubuntu1) mais 2.4.46+git20130910.58d00888-0ubuntu0sarvatt devra être installé
E: Impossible de corriger les problèmes, des paquets défectueux sont en mode « garder en l'état ».
/usr/sbin/ppa-purge: ligne 180: aptitude : commande introuvable
Warning:  Something went wrong, packages may not have been reverted
'

I am not sure of what the good move is... :?

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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:
  In Progress

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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