https://bugs.documentfoundation.org/show_bug.cgi?id=161152
Bug ID: 161152
Summary: LibreOffice doesn't set printer option "sides" leading
to duplex not working on printers relying on this
option
Product: LibreOffice
Version: 7.4.7.2 release
Hardware: All
OS: Linux (All)
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: Printing and PDF export
Assignee: libreoffice-bugs@lists.freedesktop.org
Reporter: qez33...@fosiq.com
Description:
There are two printer options for duplex printing on Linux/CUPS.
One is called "Duplex" and can be set to one of
None/DuplexNoTumble/DuplexTumble.
It's described here:
https://oip.manual.canon/USRMA-0595-zz-DR-deDE/contents/dlu-cmd-basic-2side.html
The other is called "sides" and can bet set to one of
one-sided/two-sided-long-edge/two-sided-short-edge.
It's described here: https://www.cups.org/doc/options.html
It depends on the printer which one is actually used.
I have a Brother MFC-L3730CDN which uses the "sides" option.
I also have a Brother MFC-J480DW which uses the "Duplex" option.
LibreOffice doesn't set the "sides" option which means that the duplex setting
in LibreOffice has no effect for printers which rely on this option.
That means the "sides" option is always set to the default value of the CUPS
printer for every print job.
To debug this I paused the printer and run the "strings" command on the PPD
file of the print job in /var/spool/cups.
It turned out that the "Duplex" setting is set to the value selected in the
LibreOffice print dialogue.
But the "sides" option is always the default and never what I selected in the
LibreOffice print dialogue.
I want to add that other programs work fine. Only LibreOffice is causing
problems.
Steps to Reproduce:
1. Set the duplex default of your CUPS printer to off (one-sided)
2. Reboot your system (necessary; don't know why)
3. Pause your CUPS printer (perhaps not necessary)
4. Print an (empty) two-sided document in LibreOffice Writer with duplex on
5. Run the "strings" command on the PPD file of the print job in
/var/spool/cups
6. You will see that it says sides<new line>one-sided
Actual Results:
sides
one-sided
Expected Results:
sides
two-sided-long-edge
Reproducible: Always
User Profile Reset: No
Additional Info:
Version: 7.4.7.2 / LibreOffice Community
Build ID: 40(Build:2)
CPU threads: 4; OS: Linux 6.1; UI render: default; VCL: kf5 (cairo+wayland)
Locale: de-DE (de_DE.UTF-8); UI: de-DE
Debian package version: 4:7.4.7-1+deb12u2
Calc: threaded
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