Thanks for your encouragement. I've used Debian and Ubuntu at work for several years, but it's been almost entirely command-line stuff. This is the first time I'm trying to use Ubuntu/KDE as a main desktop and like you said, there's a lot of little details to learn. Thanks again!
Thanks for your replies! If I go to display settings the other monitor doesn't show up:
It looks like it does see the monitor here (DP-4):
$ xrandr --verbose
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
HDMI-0 connected primary 1920x1080+0+0 (0x1bd) normal (normal left...
I have Ubuntu 22.04 and an NVIDIA Corporation GA102 GeForce RTX 3080 video card. The video card has 3 Displayport outputs and 1 HDMI. I have an ASUS VE278 monitor that has the HDMI plugged in and it works fine. The HDMI is plugged in with an HDMI cable going from the computer to a KVM, and...