[cups] Printer not usable from command line, "Filter failed"

[Helge Blischke]

> Am 23.06.2020 um 12:04 schrieb Jarvis Wyatt <jarvis.wyatt at gmx.com>:
> 
> The attachments have been cut off by the list, so here are two links
> where they can be found:
> 
> lpstat -t: https://pastebin.com/91gbepTh
> error_log: https://pastebin.com/kYEWS9ux
> 
> Jarvis

your log snippets don#t show the document-type of the input file
nor the filters involved.
Switch on debug logging (cupsctl —debug-logging), print from the command line
and then extract all messages containing "[Job xxxx]“ from the error_log.

What I see from your snippets is:
the printer accepts one of these formats:
–	application/object-stream		(what means raw data)
–	image/pwg-raster
–	image/urf

The filter chain for this printer needs to lead to one of these.

Helge