By way of getting to know - and eventually switch to - EOS I have been playing in Virtualbox on Mint Debian. When stuff works I then transfer what I have done to a spare machine.
In every VM I have ever set up - irrespective of OS - I have always set the Graphics Controller as VMSVGA and all has been well.
I haven’t used the VM for a while as all is going well on hardware.
Yesterday I booted the VM, ran pacman -Syu and rebooted. Boot stopped at Reached Target - Graphical Interface.
I recalled seeing that there had been an update to vmclient in EOS. No changes in Debian.
Poking around I found a couple of error messages - end result was that I needed to change the VM to VBoxSVGA and all was well.
Not sure if this will be of any use to anyone but recording it just in case.