Operating System: openSUSE Tumbleweed 20220728
KDE Plasma Version: 5.25.3
KDE Frameworks Version: 5.96.0
Qt Version: 5.15.5
Kernel Version: 5.18.11-1-default (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i7-7500U CPU @ 2.70GHz
Memory: 15.5 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 620
Manufacturer: Dell Inc.
Product Name: Inspiron 15-7579

I never had a problem switching between none and duplex printing until recently. Now, whenever I request duplex print mode, it now always prints single sheet mode. 

The printer is a Brother HL-2270DW. I have upgraded to the latest Brother drivers, created a 'new' printer to use, yet the problem persists. I tried printing under Windows 10, which works perfectly, so it does not look like a H/W problem. I have reconfigured cups and the printer using YAST. It still does not work correctly. I have looked in CUPS configuration files but found nothing I could see to be a problem.

To get it to print duplex I have to go to the printer (via IP address and browser) to specifically set duplex mode. Then I have to unset it back afterwards.

Alas, I am not fully conversant with printer configuring so I am at the end of what I can try. Can anyone help or has anyone had this problem and got past it?  It used to work fine but no longer. Help......
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