Hi,

Subject says it all. I got a HP Officejet Pro 9120e recently and tried to get it setup on a CentOS-Stream 9 machine.

I got it on the net and recognized by Cups. In the list of HP printers in Cups there is no entry for the 9120e, so I picked the nearest model, the 9020.

Now simplex printing is working fine black/colour.

Duplex printing has problems. When I print a two page document to the duplex printer the document prints OK but there is some overprinting/underprinting which makes the printed document unusable.

The problem is probably with an incorrect ppd file for the duplex printer.

Regards

Tony.