Unable to upgrade to 11.04 when both ubuntu-desktop and xubuntu-desktop are installed: conflict on notification-daemon

Thanks for taking the time to report this bug and helping to make Ubuntu better. Could you please add the log files from '/var/log/dist-upgrade/' to this bug report as separate attachments? Thanks in advance.

Thanks. could you please add the file /var/lib/dpkg/status

I think I sorted it out.

The problem is that the meta packages ubuntu-desktop and xubuntu-desktop are both installed.
ubuntu-desktop depends on notify-osd which provides notification-daemon.
xubuntu-desktop depends on xfce4-notifyd which both provides and conflicts with notification-daemon.
and finally there is a PostUpgradeRemove rule in update-manager that removes notification-daemon for xubuntu-desktop hence preventing ubuntu-desktop to upgrade.

If xubuntu-desktop is your main desktop environment you can remove notify-osd before upgrading
If ubuntu-desktop is your main desktop environment removing xubuntu-desktop should fix it, but in this case be careful to the packages that will be removed before accepting the upgrade.

I'm setting to triage/medium and adding a task for xubuntu-meta.

Accepted update-manager into natty-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

Running "sudo apt-get autoremove notify-osd" before updating did the trick. I am now running Natty. Thank You so much

SRU verification for Natty:
I have reproduced the problem with update-manager 1:0.150 in natty and have verified that the version of update-manager 1:0.150.2 in -proposed fixes the issue and the user can proceed with the upgrade.

Marking as verification-done

This bug was fixed in the package update-manager - 1:0.150.2

---------------
update-manager (1:0.150.2) natty-proposed; urgency=low

  * debian/control:
    - point to "natty" branch
  * DistUpgrade/DistUpgrade.cfg:
    - remove "kde-plasmoid-cwp" early as it will break upgrades
      later (LP: #773022)
  * DistUpgrade/DistUpgradeCache.py:
    - do not fail if not all meta-package can not be upgraded, packages
      like ubuntu-desktop and xubuntu-desktop have implicit conflicts
      LP: #775411

update-manager (1:0.150.1) natty-proposed; urgency=low

  [ Brian Murray ]
  * DistUpgrade/DistUpgradeApport.py:
    - do not report zero size attachments (LP: #772052)
  * DistUpgrade/DistUpgrade.cfg:
    - enable apport for distribution upgrades (LP: #772913)
  * DistUpgrade/DistUpgradeController.py:
    - use service to start apport

  [ Michael Vogt ]
  * DistUpgrade/DistUpgrade.cfg:
    - Remove 'dontzap' from kubuntu-desktops rules (LP: #769680).
      This fixes a upgrade issue when a old package is leftover
 -- Michael Vogt <email address hidden> Mon, 02 May 2011 09:52:35 +0200

Status changed to 'Confirmed' because the bug affects multiple users.