Pinpointing print issue
The printer is listed as fully supporting Linux, yet it is not printing per specs e.g. any paper size larger than A4 results in distortions, at least I have test on A3 all disappointment. How is it possible to find out the source of the defect: printer hardware, driver, Qt, Plasma, KDE, Linux …
There is this bug report related but I think it is not as general as a bug report as it can be (if the Qt bug is correct).
Try to set output to PDF and look at the result.
Use openoffice or similar to print A3 and see if its not
Also, what kind of distortions?
LibreOffice prints well which apparently is not a Qt or KDE application. Freeplane which is Java based does not print well. Gwenview does not print well. Why LibreOffice prints Ok but others fail?
Distortions: when I select A3 paper size for a print in the print dialog, it doesn't say no. Everything is set, but the outcome is an A4 area printed on the A3 paper.
Another caveat: I try to define different set of settings for a same printer (e.g. a default A3 paper size) - known in Linux as print queue - it is again all said but not done. After clicking Ok to save the settings, it reverts back to A4 default paper size.
Yet another anomaly: paper sizes are listed randomly (seems so) on the dropdown listbox. Usually they follow a physical (size) or logical (alphabetical name) ordering.
LibreOffice print code have been perfected over a decade so its not
super super surprising it does better. No to say the others programs are bad but LibreOffice have had a long time to become good.
Distortions: That sounds like the output is not scaled to A3 or it really dont see the A3 setting. What did you print from here?
Another caveat: The custom sizes (print queue), where did you add
those ? via printer management ?
The bug you mention does talk about Qt not having cups page and not
being able to use print queues.
What linux are you using ?
Is cups running/installed properly. ?
It is counter intuitive because hardware support is a matter of operating system capability, should not be left to individual applications. I am using Kubuntu 17.04 with regular updates, more specifically:
KDE Plasma 5.9.5
KDE Frameworks 5.31.0
OS type 64-bit
To define a new print queue I go to: System Settings > Printer > Add Printer.
Well the actual printing is always done by the application.
It must do scaling and placement correctly.
Ok, if System Settings > Printer > Add Printer is not
accepting new queue, then something must be off.
Add printer accepts new queue, only its own way, not what I define. Is it still something off or a software bug? How to find what software is the source of the bug? Qt? KDE? Linux kernel?
That is really hard to say.
Normally i would try printer on other pc just to know.