HP Envy 6555e ignores Two-sided Long Edge (standard) always prints Two-sided Short Edge (Flip)

[BruceSSkinner]

Debian 12 (bookworm)  Release 12 verso pages always printed upside down (flipped) no matter whether sides option is:  sides=two-sided-long-edge or sides=two-sided-short-edge.

Works properly on Windows 11.

[Garp_senchau]

@BruceSSkinner, Welcome to HP Support Community,

Thank you for posting your query; I’m here to help by guiding you through steps to resolve this issue

It seems that the two-sided printer works fine on the Windows platform, so the issue likely lies in the communication between the printer and Linux.

Check Printer Settings in CUPS

Open your browser and go to http://localhost:631/.

Click Administration > Manage Printers.

Select your HP printer and check duplex options (make sure it's set to Long Edge or Short Edge).

Install or Update HP Drivers

Install or update the HP drivers for Linux:

Test with a Different Application

Try printing from a different app to see if the issue is app-specific.

I hope this helps.

Please feel free to reply here if you have any questions or if you need further clarification on any of the steps. 

Take care and have a good day. 

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Regards,

[BruceSSkinner · Accepted solution]

I was printing directly to port 631 on the printer, which is the way I've always configured ipp capable printers in the past, and the two-sided-long-edge option was ignored. When I got ipp anywhere running correctly (firewall appeared to need ports opened for ipp-client and mdns), then a queue was automatically created that was pointed to localhost:631 and everything works. I'm guessing that cups on the local host is rotating the verso pages and the printer itself isn't capable of this?