Cannot login after logout

[gnubug]

If I logout and login again it doesn't work and brings me back to the login screen (lightdm). This is only the case if I use the nvidia graphics card of my laptop (via prime-select), using the intel card, I can logout and login again.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: nvidia-361 361.42-0ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Wed Aug 3 19:14:59 2016
InstallationDate: Installed on 2016-05-18 (76 days ago)
InstallationMedia: Lubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420)
JournalErrors:
 Error: command ['journalctl', '-b', '--priority=warning', '--lines=1000'] failed with exit code 1: Hint: You are currently not seeing messages from other users and the system.
       Users in the 'systemd-journal' group can see all messages. Pass -q to
       turn off this notice.
 No journal files were opened due to insufficient permissions.
SourcePackage: nvidia-graphics-drivers-361
UpgradeStatus: No upgrade log present (probably fresh install)

[gnubug (gnubug99)]

Same problem with nvidia-367.

[penalvch (penalvch)]

gnubug, thank you for reporting this and helping make Ubuntu better.

Could you please run the following command once from a terminal by ensuring you have the package xdiagnose installed, and that you click the Yes button for attaching additional debugging information:
apport-collect -p xorg 1609520

[Launchpad Janitor (janitor)]

[Expired for xorg (Ubuntu) because there has been no activity for 60 days.]