Patrick O'Callaghan wrote:
Does it still support KDM or is SDDM obligatory?
I don't know. I installed from the Fedora Workstation live DVD,
which has no KDE on it [scratches head in amazement] I then ran
dnf group install "KDE Workspaces" from within Gnome. It was
like another world and I had some difficulty completing
commonplace tasks ;-) As a result, I have ended up with GDM and
it defaults to the last used entry labelled Plasma. I am happy
with it like this.