EPSON driver: The specified MediaType caused the driver to crash.

[machencheng2]

Ubuntu 22.04 doing C++ development
cups: 2.4.2
Epson printer driver：「Epson Inkjet Printer Driver (ESC/P-R) for Linux」
（※I also tried 「Epson Inkjet Printer Driver (ESC/P-R2) for Linux」, same result）
Install using the following method.
sudo apt install printer-driver-escpr psutils libcupsimage2 cups

i query supported MediaType options

then
lp -d epson789 -o MediaType=stationery /tmp/aaaa.pdf

The epson-escpr-wrapper crashed and didn't print anything.
I was developing a program to add the MediaType I got using cupsAddOption, and it crashed.What should I do。

error is

lpoption is

[zdohnal]

Hi,

first, you combine IPP and PPD keywords - you should use either media-type=stationery (IPP), or MediaType=PLAIN_HIGH (PPD).

Second - the driver looks to combine media type and print quality, which is IMO incorrect and prevents any possible transformation between IPP media-type and PPD MediaType keywords - CUPS tries to guess the media type from MediaType values and present them as IPP attribute values, but it results in duplicates. And if you pass the IPP attribute which doesn't match with anything from PPD, it will probably cause issue in the driver - but I can't say for sure, because the part of log does not show the original error, only error from filter about SIGPIPE.

You can try install the printer via legacy-printer-app and then work entirely via IPP with libcups.

[machencheng2]

thank you very much。
and i tried
lp -d epson789 -o media-col={media-type=sfine-high} /tmp/aaaa.pdf => it worked
lp -d epson789 -o media-type=sfine-high /tmp/aaaa.pdf => it didnot worked

[zdohnal]

Maybe media-type attribute is not among job-creation-attributes-supported, and only settable via collection media-col as member attribute?

[michaelrsweet]

@zdonal "media-type" is a member attribute of "media-col", while "MediaType" is the PPD option.