Created attachment 196252 [details]
Command "hp-scan -mcolor" produces:
error: Error saving file: cannot write mode RGBA as JPEG (I/O)
This patch is from https://bugs.launchpad.net/hplip/+bug/1741214 and to be precise, it's this one: https://launchpadlibrarian.net/352548364/hplip-jpeg-compression.patch. I just made it so that port system uses it.
I referenced the wrong patch, sorry. It's https://launchpadlibrarian.net/352923466/hplip-jpeg-compression.patch
Created attachment 208802 [details]