Multi-Display wallpaper in Ventura 13.2

Hello svjgardner,

Thanks for that info and for choosing the Apple Support Communities. If we understand correctly, you are unable to change the background of the Desktop on your Mac the way you want. There are many ways to customize the wallpaper:

Customize the desktop picture on your Mac - Apple Support

Change Wallpaper settings on Mac - Apple Support

But if you are not able to get the wallpaper to work as you want, please let Apple know how to improve on this:

Product Feedback - Apple

Cheers!

Did you restart after making the changes in System Preferences?

Note: maybe this just doesn’t work. I can’t say for sure since I never turn off “displays have separate Spaces”.

A possible workaround is to make each half or relevant fraction of image into a separate image, and assign each part to the desired display.

You can only do that if you choose to UNcheck "Displays have separate Spaces" in System Settings->Desktop & Dock->Mission Control.