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Then I suggest you read the Release Notes of this new version:
https://wiki.ubuntu.com/GutsyGibbon/ReleaseNotes?action=show&redirect=GutsyReleaseNotes
In the next days I will be posting my first impression of this new version!
See you!
sudo dpkg-reconfigure xserver-xorg
Just follow the screen instructions. A Vesa video work fine for most boards in an emergency.