[okular] [Bug 461345] New: Printing an A4 document (with A4 paper) from a system with US/Letter setup as default doesn't work

[Joe]

https://bugs.kde.org/show_bug.cgi?id=461345

            Bug ID: 461345
           Summary: Printing an A4 document (with A4 paper) from a system
                    with US/Letter setup as default doesn't work
    Classification: Applications
           Product: okular
           Version: 22.08.2
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: printing
          Assignee: okular-devel at kde.org
          Reporter: jchevarley at gmail.com
  Target Milestone: ---

Operating System: Arch Linux
KDE Plasma Version: 5.26.2
KDE Frameworks Version: 5.99.0
Qt Version: 5.15.7
Kernel Version: 6.0.6-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 24 × AMD Ryzen 9 5900X 12-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 2080 SUPER/PCIe/SSE2

SUMMARY


I am in the US and mainly (read: pretty much always) print US Letter when I
need to print something. I recently had to print an A4 PDF, so I ordered some
A4 paper and gave it a go. I tried just about everything in the printer dialog
in okular but could not get any combination of options to work and actually
print the thing full size and not strangely scaled (smaller than US Letter,
also). I then tried just opening the PDF and Firefox and printing from there: I
set the paper to A4, hit print, and it worked perfectly.

Issues I had:

Changing the paper size under the printer "Properties" seems rather broken.
When I go from Letter to A4, non of the margins update, and they also stay in
inches vs mm/cm. Even manually adjusting the margins to be the "proper" size
that I found for A4 did not result in the page being printed full size.

Under the general printer dialog, I tried 'Fit to printable area' as scaling,
along with none (print original size), and fit to the full page. None of these
options worked to make the PDF print properly to the full A4 page size instead
of being shrunken in the middle with huge top/bottom margins and sides. I would
expect that the 'none' option should work since the document needed no scaling
and was natively A4. I also played with the 'Force rasterization' option to
little effect.

Another tangential issue I had was attempting to scale and print the A4
document to US Letter - which also didn't work and was either way too small or
just cut off. 

I guess there is something not quite right in both dialogs and how scaling is
done and generally setting the paper size. And to note it doesn't seem to be
just my cups setup, as Firefox printed it perfectly using its dialog and paper
settings first go.

OBSERVED RESULT

A4 document wouldn't print properly on A4 paper (and wouldn't also scale on
Letter paper)

EXPECTED RESULT

The A4 document when A4 paper is chosen would print on A4 paper. 

Or, if Letter is select and Letter paper is used, then using the scaling
options to print to page would scale the A4 document and print it correctly.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION

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