I’ve been a Linux user for almost 30 years but never had to tinker with any software to solve a problem. Cue a Fedora upgrade to somewhere around 38. I’ve been using the multiseat feature for years. It’s alway seemed very fragile. With this upgrade it was seriously broken. I managed to find a patch someone made that for some reason wasn’t accepted into the gnome-shell package. I was able to grab the patch, rebuild the RPM package and install the update to my system and restore multiseat. It was actually pretty effortless. The hardest part by far was finding the fix. Now updating to Fedora 41 I had to do the same process again. Apparently the problem still exists. This time I had to create a new patch as the original one wouldn’t apply anymore but that wasn’t very hard. It was very satisfying to be able to fix that problem and it was only possible due to the OSS community.
I set it up a while ago and don’t have a good resource for setting it up now. Once I got it set up it has worked well. But like I said it seems fragile. When I upgraded fedora a couple of years ago it broke. I think it might have been the wayland transition. I switched from Nvidia to AMD. But I’m not sure that’s necessary. My wife and I have two workstations on one computer. It works well until it breaks (if you want to live with end of life software it may not break). For whatever reason multiseat doesn’t seem to be a mainstream feature. But I like it and have been using it for many years.
https://wiki.debian.org/Multi_Seat_Debian_HOWTO
Loginctl is the tool you use to assign hardware to different seats. Also I’m not sure every login manager supports it. I used GDM.
I am gonna give it a shot. This may sound strange but i am using KDE with GDM lol. Maybe it will help or hurt me not sure yet.
That’s what I use too.