Comment 4 for bug 1041625

My gut feeling here is that the fontconfig warnings are a red herring - that's happening on quantal a lot at the moment.

So the real question is why are you at a text screen and not a GUI;
   1) On the machine that won't boot, at the prompt please try apport-cli -u 1041625 if we're lucky it might add some logs to launchpad.

   2) If the machine has a /var/log/lightdm please attach the logs in there to this report.

Dave