It works in Ubuntu 20.04 but not in Ubuntu 21.04:
I suspect... kernel regression... Zorin OS 16 is using the 21.04 kernel.
You might try rolling back the kernel to see if that works:
sudo apt install linux-headers-5.8.0-63-generic linux-modules-5.8.0-63-generic linux-modules-extra-5.8.0-63-generic linux-image-5.8.0-63-generic
Be sure to Boot Into the 5.8 Kernel by tapping the esc key at Boot Menu Grub and choosing Advanced Options for Zorin to test the 5.8 kernel.