I thank you sincerely for getting back to me on this. I wanted to let you know I just figured it out! I thought I’d document it for the next person to come along.

I had tried all of the options in that screenshot, and none seemed to work.

Investigating further, it was a Brother printer, so I needed to download special drivers: support.brother.com/g/b/productsearch.aspx?c=us&l…

Then, arcane magic needed to be performed on the command line: support.brother.com/g/b/downloadhowto.aspx?c=us&l…

I had done all that, but I still had a problem. Digging through the script output, apparently I had a bad “libsane” installed with apt. Also, to add to the problems, apt doesn’t recognize the string “libsane” now. We are to use its new name “libsane1” now in apt! So, I tried to reinstall and then reinstall the brother printer drivers, to no avail. Eventually, I had to completely uninstall libsane, and then reinstall it. And everything magically worked.

It’s so easy! 🤨

One thing to be ready to have is the IP number of the printer, which I was able to get in the WiFi options of the printer.

Whew! Test page printed on my test machine! I feel like this was my last major hurdle before adopting Linux on other machines.

Again, thanks for responding!