No login screen appears on boot

[ottadini]

$ lsb_release -rd
Description: Ubuntu 12.04.1 LTS
Release: 12.04

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.

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

    https://dl.dropbox.com/u/22417033/.xsession-errors

And Xorg.o.log:

    https://dl.dropbox.com/u/22417033/Xorg.0.log

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: lightdm 1.2.1-0ubuntu1.1
ProcVersionSignature: Ubuntu 3.2.0-33.52-generic 3.2.31
Uname: Linux 3.2.0-33-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu15
Architecture: amd64
Date: Wed Nov 21 12:01:09 2012
MarkForUpload: True
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.init.lightdm.conf: 2012-10-17T12:06:24.332229

[Robert Ancell (robert-ancell)]

Closing assumed fixed.