This seems to be also related to kernel version. Booting with a 2.6.38 kernel I can remove the changes to the lightdm.conf file and autofs works fine.
As another data point, with a linux kernel >3.0 on a Debian wheezy machine and a similar autofs setup I get a similar problem with autofs failing. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to autofs5 in Ubuntu. https://bugs.launchpad.net/bugs/830377 Title: autofs5 needs to start before lightdm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/autofs5/+bug/830377/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs