Epson VS330 projector no longer works with my new iMac
I upgraded my Mac desktop earlier this month, and yesterday I discovered that my Epson VS330 projector picked up only my desktop background when connected.
It was running fine on my mid-2010 Mac and El Capitan, with a 21-inch monitor. Now, with a new iMac and Big Sur, and with a 27-inch monitor, my projector won’t pick up any subject matter on the screen. No icons, no photos, nothing except the background image on the desktop.
I have been connecting my projector to my desktop with a USB cable running from a USB port on the iMac to the USB-B port on the projector. This has always worked before.
Is there an easy fix for this?
iMac 27″, macOS 11.2