Once the target of your system was changed from graphical to multi-user, no longer an initial created user can not login in graphical target.
Steps to Reproduce:
1. Install RHEL8 with GUI (Software Selection -> Sever with GUI) 2. Create an user 3. Login by the user with ssh from a remote terminal 4. change the target from graphical to multi-user # systemctl isolate multi-user.target 5. Return the target from multi-user to graphical 6. try to login from the Desktop 7. Can not log-in by the initial user (In this situation, if you use an another user instead of the one who logged in first, you can log in to the GUI)
Red Hat Enterprise Linux 8
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