[okular] [Bug 469132] KDE Plasma Printer for HP Colorjet refused to set duplex printer, while Gnome GTK prints duplex w/o

[Frederik]

https://bugs.kde.org/show_bug.cgi?id=469132

Frederik <fgschack at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |fgschack at gmail.com

--- Comment #4 from Frederik <fgschack at gmail.com> ---
I have the same issue, Duplex options greyed out in Okular and Kate (they are
using the same dialog), but I can print duplex fine from LibreOffice Writer.

Environment:
*Nobara 44 (fresh installation)
*KDE Plasma 6.7.2
*Qt 6.11.1
*Wayland
*Brother DCP-L5660DN
*Driverless IPP Everywhere (IPPS)

Observed behavior:
*Okular, Kate and Evince disable all printer-specific properties.
*Duplex cannot be selected.
*"Printer Properties" / "Advanced" are disabled.
*Printer defaults are ignored.
*Printer prints simplex even though the queue default is DuplexNoTumble.

Evidence:
lpoptions -l exposes:
*Duplex: None DuplexNoTumble DuplexTumble
*Generated PPD contains duplex definitions.
*lp -o sides=two-sided-long-edge prints duplex correctly.
*LibreOffice prins duplex correctly.

lpoptions confirms:
*Duplex=DuplexNoTumble
*Applications using the common print dialog still print single-sided.

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