'''Ignoring the SSH tunnel worked fine: Connect to 192.168.2.202::5902 using the TightVNC (or RealVNC, etc.) client.'''
====Later Notes====
I came back and changed the resolution to make it work on one of my portrait desktop monitors.
As root:
vi /etc/systemd/system/vncserver@.service
Change line:
ExecStart=/usr/bin/vncserver -depth 24 -geometry 1440x2560 :%i
(Note that the size is 2160x3840 divide by 150%). Leave the color depth as it says elsewhere that changes are bad.
systemctl daemon-reload
systemctl enable vncserver@2.service
As Ed:
vncserver -kill :2
sudo systemctl start vncserver@2
sudo systemctl status vncserver@2
Exit full screen with ctrl-alt-shift-f.