[okular] [Bug 464141] New: Okular is always printing in grayscale for HP Colorjet printers

[Dustin Siebert]

https://bugs.kde.org/show_bug.cgi?id=464141

            Bug ID: 464141
           Summary: Okular is always printing in grayscale for HP Colorjet
                    printers
    Classification: Applications
           Product: okular
           Version: 21.12.3
          Platform: Ubuntu
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: printing
          Assignee: okular-devel at kde.org
          Reporter: dsiebert at mail.uni-paderborn.de
  Target Milestone: ---

SUMMARY
***
I can confirm this issue:

https://www.reddit.com/r/kde/comments/x2dhs8/okular_prints_in_black_and_white_unless_i_check/

For me even the workaround with "Force rasterization" is not working. Okular is
forcing the print settings to grayscale even the global setting is set to color
mode. It's a bug between Okular and the HP Postscript driver v3010.107
(built-in driver for Kubuntu 22.04 and latest version in hplip). For the
drivers Foomatic/Postscript and PCL3 the issue disappears, but the drivers are
not offering all possible printer settings. For other programs HP Postscript
driver v3010.107 is working fine.

***


STEPS TO REPRODUCE
1. Use HP Postscript driver like 3010.107 for HP color Laserjet 5550
2. Print a colored page in Okular

OBSERVED RESULT
Printer is printing in grayscale

EXPECTED RESULT
Printer should print in color mode

SOFTWARE/OS VERSIONS: Kubuntu 22.04 LTS

I hope, you can provide us a fix for 21.12.3 since this bug is really annoying
in a productive KDE environment.

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