When I boot up my system, I don't get a login screen, just the boot log scrolling by, repeating after a while lines like this:
* Starting anac(h)ronistic cron [ OK ]
* Stopping anac(h)ronistic cron [ OK ]
I can change to another virtual terminal, and start lightdm from there with sudo lightdm restart.
Other people with similar problems had just lightdm in their /etc/x11/default-display-manager. I've checked mine and it has /usr/sbin/lightdm in there, so that's not the problem.
I have a dual monitor setup if that's of any interest.
New set of logs from /var/log/lightdm/ after reboot:
- https://dl.dropbox.com/u/22417033/lightdm.log
- https://dl.dropbox.com/u/22417033/x-0.log
- https://dl.dropbox.com/u/22417033/x-0-greeter.log
And the ~/.xsession-errors file
And Xorg.o.log: