Manual duplex printing not working on Debian 13

[mpeter50]

Thanks for making this driver!

I wanted to print a multi page document with manual duplex printing.
I have enabled the option for that in the printer configuration (in KDE's systemsettings):

When I tried to print the document, the first page came out, but then the process stopped, and I dont see a prompt that would tell me to move the paper back. The print job disappeared from the list.

[mpeter50]

I suspect that its because I am running a Wayland desktop session, and maybe the filter only supports X11.
I'll try later what happens in az X11 session.

If you have ideas please let me know.

[mpeter50]

No, a dialog does not appear in an X11 KDE Plasma session either.

Forgot to mention details.

• Debian 13
• KDE Plasma 6
• CUPS 2.4.10