Hadn't used kde for a few weeks. Trying to start it gave me the message that it was not installed. Curious since I've had it on my system for years. following the message suggestion ran
dnf groupinstall "KDE (K Desktop Environment)"
which happily did nothing but said it was complete. From rpm -qa I see lots of kde entries. Same thing happened on my laptop. Both systems running recently updated 31. Has kde completely abandoned x11?