Would you be able to try this with another display manager, e.g. gdm?
Can you see what $PATH is set to when logging in on a terminal? It looks at first glance like the session can't find upstart, and that can't find the session processes to run.
Would you be able to try this with another display manager, e.g. gdm?
Can you see what $PATH is set to when logging in on a terminal? It looks at first glance like the session can't find upstart, and that can't find the session processes to run.