I'd like to confirm that I observed this same problem when upgrading from 17.10 to 18.04. Removing /etc/X11/Xsession.d/50_check_unity_support also fixed my installation.
I'd like to confirm that I observed this same problem when upgrading from 17.10 to 18.04. Removing /etc/X11/ Xsession. d/50_check_ unity_support also fixed my installation.