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According to recent documentation, I'll be given the option next time I login .. to upgrade to Ubuntu 12.04.1. But that's not really what I want.

Any suggestions?

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Short answer is yes, but don't. You can do the normal updgrade to 12.04 and then install the xubuntu-desktop. But a fresh install of 12.04 if Xubuntu is less risk of any error.

But if you really want to upgrade here's what you need to do: open a terminal and type:

  1. gedit /etc/update-manager/release-upgrades

Now you need to edit all entries like this Prompt=lts

then just do a normal upgrade.

  1. do-release-upgrade Now when this is done just install the xubuntu-desktop. Remember to select the desktop at the log-in screen.
  2. sudo apt-get install xubuntu-desktop

But I recommend to just make a fresh install.

I got my information from this question. It's a great source.

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If this is a command line system you can sudo do-release-upgrade and then just sudo tasksel and select xubuntu-desktop or sudo apt-get install xubuntu-desktop

If this is a full ubuntu-desktop machine, I would sudo apt-get remove ubuntu-desktop && sudo apt-get install xubuntu-desktop && sudo apt-get autoremove, and then do the upgrade.

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I guess you first need to install Tasksel for that. – atenz Aug 28 '12 at 6:55
sudo apt-get remove ubuntu-desktop wont remove the packages that came with, you need a way longer command for that. – Alvar Aug 28 '12 at 6:58
The package tasksel should be installed on a default lucid system. – Histo Aug 28 '12 at 7:01

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