After installing nvidia binary drivers lightdm does not start after reboot

[Stefan Bader]

Could be a duplicate of bug #873495 which has not, yet, gone past "triaged" status. But it has not been updated since last year and this just happened to me trying 14.10 (Utopic).

Before installing the binary drivers, the nouveau driver was in use and lightdm started automatically. But then would crash the whole system somehow related to fading in popup menues. But that is another problem. Since the binary drivers are installed the system only boots into text mode. But is more stable after manually starting lightdm.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: lightdm 1.11.9-0ubuntu2
ProcVersionSignature: Ubuntu 3.16.0-17.23-generic 3.16.3
Uname: Linux 3.16.0-17-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.14.7-0ubuntu2
Architecture: i386
CurrentDesktop: Unity
Date: Thu Sep 25 17:00:53 2014
InstallationDate: Installed on 2014-09-25 (0 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha i386 (20140923)
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Stefan Bader (smb)]

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.