I'm affected by the issue as well, and I also tracked it down to a race issue. I "fixed" it by adding "sleep 3" to /etc/init/lightdm.conf just prior to "exec lightdm"
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers in Ubuntu. https://bugs.launchpad.net/bugs/865768 Title: lightdm fails to load with nvidia-current 280.13 on dual screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/865768/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp