Screen blackout after login and then goes back to the login screen

When I enter my credentials into the login screen, it shows black screen (as if processing something in the background) and then after a minute or so it goes back to the login screen and I have to enter my credentials again. This happen sometimes but not all the time.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.15.0-39-generic 4.15.0-39.42~16.04.1
ProcVersionSignature: Ubuntu 4.15.0-39.42~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-39-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CurrentDesktop: GNOME
Date: Thu Nov 22 11:40:42 2018
InstallationDate: Installed on 2018-11-08 (13 days ago)
InstallationMedia: Ubuntu-GNOME 16.04.5 LTS "Xenial Xerus" - Release amd64 (20180731)
SourcePackage: linux-signed-hwe
UpgradeStatus: No upgrade log present (probably fresh install)