Just I performed the following :
sudo ppa-purge xorg-edgers
and then the dist upgrade proceeded very smoothly. Thanks a lot for great advice.


-----Original Message-----
From: <email address hidden> [mailto:<email address hidden>] On Behalf Of Sean Tseng
Sent: 28 April, 2014 17:36
To: <email address hidden>
Subject: Re: [Bug 1069133] Re: Get upgrade error 12.04 - 12.10 "Could not determine upgrade" - xorg from ppa

Awesome. I will try that. Thank you very much!


On Sat, Apr 26, 2014 at 3:11 AM, tasgo <email address hidden> wrote:

> My bad,
>
> If haven't done so, and if you still have the xorg-edgers ppa 
> installed you need to remove it:
>
>    sudo apt-get install ppa-purge
>
>    sudo ppa-purge
>
> the upgrade should then run smoothly.
> After its done, if can't get into the desktop or if you only can run 
> low graphics mode, then you should follow the steps on askUbuntu
>
> --
> You received this bug notification because you are subscribed to a 
> duplicate bug report (1313008).
> 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)
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug
> /1069133/+subscriptions
>

--
You received this bug notification because you are subscribed to a duplicate bug report (1312340).
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)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1069133/+subscriptions