[okular] [Bug 368758] New: Printing with grayscale option do not work

[Francisco Gonzalez via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=368758

Bug ID: 368758
Summary: Printing with grayscale option do not work
Product: okular
Version: 0.25.80
Platform: Archlinux Packages
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: printing
Assignee: okular-***@kde.org
Reporter: ***@gmail.com

Trying to print a color pdf document in grayscale produces a color printing.
This happens when printing to a color printer and also printing to a file.
Printing a png file in grayscale works as expected.

Reproducible: Always

Steps to Reproduce:
1. Open a pdf color file
2. Select "File -> Print -> Options -> Options -> (Color Mode) Grayscale"
3. Press "Print"

Actual Results:
The document is printed in color

Expected Results:
The document should be printed in grayscale

Tested in Archlinux with version 0.26.0
Frameworks 5.25.0
Plasma 5.7.5
PDF Backend 0.6.5
KDE Development Platform 4.14.24
kdelibs 4.14.24

[b***@kde.org]

https://bugs.kde.org/show_bug.cgi?id=368758

lxfx.accounts+***@gmail.com changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |lxfx.accounts+***@gmail.com

--- Comment #1 from lxfx.accounts+***@gmail.com ---
Confirmed on Archlinux

Also, duplex printing won't work from the okular print wizard.

Okular 16.12.1-1
Linux 4.8.13-1
Plasma 5.8.5.1
Frameworks 5.30.0-1
kdelibs 4.30.0-1

Printer: Brother MFC-J5620DW
Driver: 3.0.1-2

[Alexandre Sicard]

https://bugs.kde.org/show_bug.cgi?id=368758

Alexandre Sicard <***@chezmandre.net> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@chezmandre.net

[Michael Weghorn]

https://bugs.kde.org/show_bug.cgi?id=368758

Michael Weghorn <***@posteo.de> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@posteo.de

[csbugs]

https://bugs.kde.org/show_bug.cgi?id=368758

csbugs <***@clearingstelle-eeg.de> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@clearingstelle-eeg.de

--- Comment #2 from csbugs <***@clearingstelle-eeg.de> ---
I can confirm this in Opensuse Leap 42.3 using
- kde-print-manager-17.04.2-1.1
- okular-17.04.2-1.6
- Plasma 5.8.7
- plasma-framework 5.32-0-4.1
- libQt5.6.2
- kdelibs-4.14.33

In evince it works though using gtk oder gnome(?) print dialog...

Is this related to https://bugreports.qt.io/browse/QTBUG-54464 ?

[Nate Graham]

https://bugs.kde.org/show_bug.cgi?id=368758

Nate Graham <***@zoho.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@hotmail.com

--- Comment #3 from Nate Graham <***@zoho.com> ---
*** Bug 369115 has been marked as a duplicate of this bug. ***

[Nate Graham]

https://bugs.kde.org/show_bug.cgi?id=368758

Nate Graham <***@zoho.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@zoho.com

[Simon Andric]

https://bugs.kde.org/show_bug.cgi?id=368758

Simon Andric <***@gmail.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@gmail.com

[Dainius Masiliūnas]

https://bugs.kde.org/show_bug.cgi?id=368758

Dainius Masiliūnas <***@gmail.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@gmail.com

--- Comment #4 from Dainius Masiliūnas <***@gmail.com> ---
I can confirm both issues on openSUSE Leap 42.3. If either the greyscale option
worked OR the advanced printing tab was there, it would be possible to print
greyscale PDFs. As it is, CUPS defaults need to be changed instead, and that's
way too involved for such a simple task...

[Oliver Sander]

https://bugs.kde.org/show_bug.cgi?id=368758

Oliver Sander <***@tu-dresden.de> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@tu-dresden.de

--- Comment #5 from Oliver Sander <***@tu-dresden.de> ---
As a workaround, if you have a recent version of Okular [0], grayscale printing
should work if you set the 'force rasterization' option.

[0] You need the patch 0c4c2ddbbc5e509c69b72c99bf6e83a356669eba , which dates
from August 4th, 2017

[Michael Weghorn]

https://bugs.kde.org/show_bug.cgi?id=368758

--- Comment #6 from Michael Weghorn <***@posteo.de> ---
Note that the "Advanced" options tab has been reintroduced for the current
development version of Qt 5 [1]. Also, the problem with duplex [2] and color
[3] options being set at different places has been fixed, so I'd expect that
the problem should be solved with those Qt upstream changes (will be part of
the upcoming Qt 5.11) for the case where a real printer is involved.

[1] https://codereview.qt-project.org/#/c/213391/
[2] https://codereview.qt-project.org/#/c/215131/
[3] https://codereview.qt-project.org/#/c/215069

[Nate Graham]

https://bugs.kde.org/show_bug.cgi?id=368758

--- Comment #7 from Nate Graham <***@zoho.com> ---
Should we close this as RESOLVED UPSTREAM, then?

[Michael Weghorn]

https://bugs.kde.org/show_bug.cgi?id=368758

--- Comment #8 from Michael Weghorn <***@posteo.de> ---
(In reply to Nate Graham from comment #7)

Post by Nate Graham
Should we close this as RESOLVED UPSTREAM, then?

While printing to real devices should yield the expected result now, Okular
itself still does not take the color/greyscale into account when generating the
print data (by default, s. Oliver's comment 5 for rasterized printing), which
also leads to "Print to file (PDF)" still not yielding the expected result.
(Sorry for not mentioning that more explicitly in my previous comment.)

Unless this is handled by a different bug report, I'd therefore leave this one
open for now.

[Nate Graham]

https://bugs.kde.org/show_bug.cgi?id=368758

--- Comment #9 from Nate Graham <***@zoho.com> ---
Great, thanks for the update. Would you like to change the title accordingly,
since printing to a real printer does work now?

[Michael Weghorn]

https://bugs.kde.org/show_bug.cgi?id=368758

--- Comment #10 from Michael Weghorn <***@posteo.de> ---
(In reply to Nate Graham from comment #9)

Post by Nate Graham
Great, thanks for the update. Would you like to change the title
accordingly, since printing to a real printer does work now?

That sounds like a good idea. What about "Grayscale option ignored when
generating print data for PDF document"?
(Note that I don't seem to have the permission to change the title myself,
since I am not the reporter of the bug).

[Nate Graham]

https://bugs.kde.org/show_bug.cgi?id=368758

Nate Graham <***@zoho.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
Summary|Printing with grayscale |Grayscale option ignored
|option do not work |when generating print data
| |for PDF document

--- Comment #11 from Nate Graham <***@zoho.com> ---
Sounds good!

[Michael Weghorn]

https://bugs.kde.org/show_bug.cgi?id=368758

Michael Weghorn <***@posteo.de> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@gmail.c
| |om

--- Comment #12 from Michael Weghorn <***@posteo.de> ---
*** Bug 390409 has been marked as a duplicate of this bug. ***

[b***@kde.org]

https://bugs.kde.org/show_bug.cgi?id=368758

***@gmail.com changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@gmail.com

[b***@kde.org]

https://bugs.kde.org/show_bug.cgi?id=368758

--- Comment #13 from ***@gmail.com ---
I am seeing this problem with colour and duplex printing on our Canon printer,
on openSuse Leap 15. I need to make changes in the advanced settings before the
changes I want are used.

[Luigi Toscano]

https://bugs.kde.org/show_bug.cgi?id=368758

Luigi Toscano <***@tiscali.it> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@tiscali.it

--- Comment #14 from Luigi Toscano <***@tiscali.it> ---
(In reply to vasosergiou from comment #13)

Post by b***@kde.org
I am seeing this problem with colour and duplex printing on our Canon
printer, on openSuse Leap 15. I need to make changes in the advanced
settings before the changes I want are used.

As far as I know, openSUSE Leap 15 still uses Qt 5.9. Could you please check
it? Also, it may be possible that openSUSE packagers backported some of the
patches, but then it's up to them to check whether this is still valid.

[b***@kde.org]

https://bugs.kde.org/show_bug.cgi?id=368758

--- Comment #15 from ***@gmail.com ---
I can confirm that openSuse Leap15 is using Qt 5.9.4. I guess I need to wait or
upgrade to Tumbleweed