Bug 418551

Summary:	Duplex printing setting ignored
Product:	[Applications] okular	Reporter:	mkkot <marcinkocur>
Component:	printing	Assignee:	Okular developers <okular-devel>
Status:	RESOLVED FIXED
Severity:	normal	CC:	m.weghorn
Priority:	NOR
Version First Reported In:	1.9.3
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	PPD

Description mkkot 2020-03-06 15:49:39 UTC

SUMMARY

I have Brother's HL-5250DN. The default setting for duplex printing in CUPS configuration (http://localhost:631/admin/#General) is None. This should be overridden by the application like Okular for a particular document I want to print.

However, when I print PDF document from Okular, duplex setting is ignored.

STEPS TO REPRODUCE
1. Open PDF document with Okular
2. Ctrl + P
3. Click "Options >>" button
4. Click "Options" tab
5. Select Long side
6. Click Print

OBSERVED RESULT

Pages are being printed in separated sheets of paper.

EXPECTED RESULT

2 pages should be printed on the same sheet of paper.


SOFTWARE/OS VERSIONS
Linux/KDE Plasma: linux 5.5.7-arch1-1 / not using plasma
Qt Version:  5.14.1
cups 2.3.1-1
brother-cups-wrapper-common 1.0.0 
brother-cups-wrapper-laser 2.0.1_2_0ubuntu7-2


ADDITIONAL INFORMATION

It is most likely not a problem with QPrintDialog but with Okular. To confirm this you can use any other program that is using QPrintDialog. For example:

1. Install qpdfview
2. Execute section STEPS TO REPRODUCE using qpdfview

Results: the duplex setting is working fine.

Comment 1 Michael Weghorn 2020-04-21 06:00:56 UTC

For further analysis, can you please attach:

1) the PPD of the printer, located at /etc/cups/ppd/<PRINTERNAME>.ppd

2) a CUPS debug log of one such printout (set 'LogLevel debug' in /etc/cups/cupsd.conf, then restart CUPS, print, and attach /var/log/cups/error_log (or the relevant part of it). (Depending on the setting for 'ErrorLog' in /etc/cups/cups-files.conf, the log output may alternatively go to the journal, so either retrieve it from there or set 'ErrorLog /var/log/cups/error_log').

Comment 2 mkkot 2020-04-21 16:36:23 UTC

Created attachment 127752 [details]
PPD

Comment 3 mkkot 2020-04-21 17:21:13 UTC

Cannot reproduce the problem anymore with QT 5.14.2.