Or is there a way to set a resolution as a default for specific displays?

I have 3 monitors in my setup. Two are on a KVM, and one is always on my Mint PC. That monitor is an old XP era Dell. But it isn’t hooked up with DVI, instead I have it connected via HDMI to an audio extractor to the Dell speakers, then HDMI to DVI. It works great. Except when I hit the KVM switch, and for some reason the resolution on the Dell changes from 1280x1024 to 1920x1080, which is unsupported.

How the heck do I get 1280x1024 to be persistent?