So following these instructions to install Ubuntu 20.04 onto ZFS Root, I got KDE Neon installed (neon-desktop virtual package). Everything seems good, except when I boot up there's no GUI login. I found SDDM wasn't enabled, so I enabled it systemctl enable sddm. When I do systemctl status sddm it now shows it's Active, running, no errors.
● sddm.service - Simple Desktop Display Manager
Loaded: loaded (/lib/systemd/system/sddm.service; enabled; vendor preset: enabled)
Active: active (running) since Wed 2021-03-17 23:42:33 PDT; 19min ago
Docs: man:sddm(1)
man:sddm.conf(5)
Main PID: 2103 (sddm)
Tasks: 2 (limit: 76373)
Memory: 6.9M
CGroup: /system.slice/sddm.service
└─2103 /usr/bin/sddm
Mar 17 23:42:33 darklaptop systemd[1]: Started Simple Desktop Display Manager.
Mar 17 23:42:33 darklaptop sddm[2103]: Initializing...
Mar 17 23:42:33 darklaptop sddm[2103]: Starting...
Mar 17 23:42:33 darklaptop sddm[2103]: Logind interface found
Yet even after I reboot, nothing shows up as a login interface. When I login, and run startx, Plasma DE does startup and run fine, everything seems good.
EDIT:
systemctl get-default output is graphical.target
EDIT2: Some new information. Booting with nomodeset kernel parameter has it load up fine on boot. Without that, it just acts as it did previously
systemctl get-default?graphical.target