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Installed gnome 3.8 from its official ppa. Installed gnome-shell gnome-shell-extensions and ubuntu-gnome-desktop.

Installation went smooth. Also selected gdm as the login manager. THe only thing that doesnt work is when I select from the login window "gnome-classic" , press login, quickly throws with "Failed to load session "gnome-classic".

OS: ubuntu 13.04

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Select "GNOME", that is the gnome-shell, "gnome-classic" is the fallback mode (gnome-panel). – grimpitch May 15 '13 at 1:43

GNOME Classic, also known as the fallback session, was dropped from GNOME 3.8. It will not work unless you downgrade to GNOME 3.6.

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Gnome classic is a new mode in Gnome 3.8. This replaces fallback. – Hrr May 15 '13 at 3:36
@Hrr okay, i knew they had a collection of extensions to replace fallback's look (right?). is this accessible as a separate session config? – strugee May 15 '13 at 5:23
yes. Available for selection during login – Hrr May 15 '13 at 6:12

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