After in-place upgrade to RHEL 8, stuck at the boot screen message [OK]Started Update UTMP about System Runlevel Changes.

Hi,
After a lengthy in-place upgrade from RHEL 7 to 8, boot seems to be stuck on the:

[ OK ]Started Update UTMP about System Runlevel Changes.

This is a fairly old system that used to run RHEL 7.6 ok, has AMD A8 processor and 16GB of RAM.
Leapp reported few incompatibilites regarding kernel modules that RHEL 8 no longer support, but that was dealt with and upgrade proceeded succesfully. Boot loader screen shows RHEL 8.1 is loading, the final installation screen where subscription is confirmed is shown, I would press "FINISH CONFIGURATION" button and after a bit of messages about AMD processors not being tested by Red Hat and "No irq handler for vector" repeated 3 times, boot proceeds to inform that GNOME Display Manager is started, target Graphical Interface is reached and then stops at the message above.
How do I make my system pass this stage and get it to boot on normally?