Hi,
Since I installed the new version of Ubuntu, it is not auto login anymore. Now it's annoying me at every boot of Ubuntu, so I report the problem here. I used Ubuntu 16.04 on my laptop with a Nvidia GPU with the proprietary driver.
I put two logs produced by lightdm, hope it can help someone.
---
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
DistroRelease: Ubuntu 16.04
InstallationDate: Installed on 2016-04-21 (68 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
Package: unity-greeter 16.04.2-0ubuntu1
PackageArchitecture: amd64
Tags: third-party-packages xenial
Uname: Linux 4.6.2-040602-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
Please run this in terminal to collect more info about the bug:
apport-collect 1597471