Unable to print single-sided!?

I’m not using a generic driver but the Samsung one.

The way other options are accessed is through the printer web page option. Here is a sample:


I should add that this is from my Mini running Catalina so not sure if it’s different on my Sonoma Air M1.

You can disable two-sided printing on many Canon printers by using the printer’s control screen and/or by visiting the printer’s local admin web page, though you may have to dig deeply into the submenus.

I’m pretty sure that if you disable two-sided printing directly on the printer, it cannot be overridden by the driver on your computer, but I may be wrong about that.