I have an TP-Link AC600 Archer dongle. My previous system used Ubuntu 20.04, installed shortly after the OS was released, and I installed the drivers and got them to work correctly through this answer:
https://askubuntu.com/a/1191835/684141
This system does not have a UEFI partition. Only /, swap and /home,
However, I did a fresh install today of 20.04.3 from a live USB on another system and it forces you to install a UEFI partition. As far as I can tell, this dongle driver only works with secure boot DISABLED. But I cannot disable secure boot in 20.04.3 and I HAVE to have a UEFI partition. There is no option to disable secure boot in the ASUS Sabertooth Bios and I cannot do it through Ubuntu either, it always goes back to "enabled".
It seems 20.04.3 is forcing UEFI. How can I get this driver and dongle to work now? Is there no way to disable secure boot to get this to work?