That was actually a bug in udev (now part of systemd) which dropped an upstart script for the case of "alternate" graphics devices. This was fixed now.
** Changed in: lightdm (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1374002 Title: After installing nvidia binary drivers lightdm does not start after reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1374002/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs