I have a laptop with EndeavourOS KDE installed with printer drivers. I disabled my firewall, and tried to set up a Brother MFC-9130CW printer. Oddly, both the KDE printer setup program and the EndeavourOS Fedora (probably?) printer setup program only detected a driver version of it. I had to open up the CUPS web panel, and it found the driverless printer “type” instantly.
Why is this happening? The firewall was off, so there should be no reason for both tools to not work. This worked in Ubuntu and KDE neon before without problems.
I have a different Brother MFC printer, but one thing which took me a while to figure out was, that the drivers required the 32 bit version of libc6.