ScreenOrientation on Linux/Windows?

I'm working on a Linux/Windows project. Our monitor is rotated, so our resolution is 1080x1920. I can set that in the build/player settings, but our screen is still sideways. I was hoping to use ScreenOrientation.Portrait, but the documentation states "Currently screen orientation is only relevant on mobile platforms."

Is there another way I should be doing this? Working in the editor, my 1080x1920 window looks good, and everything is how I want to see it, but when I run/build, I need to run on this rotated monitor.

Is there something besides ScreenOrientation that will get me the result I'm looking for? Open for suggestions. My platforms at the moment are Linux/Windows.

Thanks in advance -Bri