Seems, I wasted a lot of time trying almost all suggestions including installing Lightdm - all i get is an empty purple color wall with active mouse cursor. - not even a seting icon - barely managed to force a terminal (ctl+ alt +f2) to reinstall a bunch of packages that should have been installed during the upgrade process which went without any error message - was trying on an old hp g50 laptop with external screens
Any tested idea how to fix this?