lprint (1.1) not working on ubuntu 24.04 [Xprinter XP-460B]

[gregoiregentil]

I have a Xprinter XP-460B. I was running Ubuntu 20.04 which had lprint 1.0. I had a .lprintrc file setup just fine. Everything was working over USB.

I have updated my PC to Ubuntu 24.04. The default is lprint 1.1: https://packages.ubuntu.com/noble/lprint

I can run:

lprint devices

and:

lprint add -v usb://Xprinter/Xprinter/XP-460B?serial=S... -d xprinter-xp-460b -m zpl_4inch-203dpi-dt

But when I print a label, nothing happens. I see that there is a /etc/lprint.conf file now. The content looks OK and similar to my fine tuned ~/.lprintrc. A job is added to the last line of this conf file with status 5.

I have downgraded the deb package to 1.0 and everything works fine with ~/.lprintrc

I'm OK to continue my life with Ubuntu 24.04 + lprint 1.0 and I'm also willing to debug the problem to make work lprint 1.1.

[michaelrsweet]

OK, so I don't actually have this printer to test/develop with, but I'll try to help.

First, the old "~/.lprintrc" file is no longer supported - LPrint 1.0 spawned PAPPL which has to take a little wider view concerning where it places configuration and state files. I wasn't able to really support an auto-migration from the old config file to the new state files, and for that I apologize, but now that LPrint is using PAPPL the paths and contents will be more stable and have proper migration between versions.

The usb: URI doesn't look right to me - the general format is "usb://MAKE/MODEL?serial=SERIAL", so it should just have the one "Xprinter" in the path. Using the URI you showed will definitely not work and the log file will likely complain about the printer not being found or something similar.

So right now if you will try it, try changing the usb: URI and see how that works for you. I have a number of Zebra label printers and they all work with the current release for both usb: and socket: URIs.

[gregoiregentil]

I made some progress. Yes, the usb: URI was not correct. I inadvertently added a MAKE. So now, I manage to print something but the image is scaled down compared to version 1.0.

In version 1.0, I had:

media-col-default 0,0,0,0,0,oe_4x6-label_4x6in,main-roll,0,0,2,labels
media-col-ready-0 0,0,0,0,0,oe_4x6-label_4x6in,main-roll,0,0,2,labels
printer-darkness-configured 50
copies-default 1
orientation-requested-default portrait
print-color-mode-default bi-level
print-content-optimize-default auto
print-quality-default normal

In version 1.1, I have:

DNSSDName xprinter-xp-460b
Contact
MaxActiveJobs 0
MaxCompletedJobs 100
NextJobId 1
ImpressionsCompleted 0
label-mode-configured 
media-col-default bottom="1" left="1" length="15240" name="na_index-4x6_4x6in" right="1" source="main-roll" top="1" tracking="mark" type="labels" width="10160"
media-col-ready0 bottom="1" left="1" length="15240" name="na_index-4x6_4x6in" right="1" source="main-roll" top="1" tracking="mark" type="labels" width="10160"
orientation-requested-default none
print-color-mode-default monochrome
print-content-optimize-default auto
print-quality-default normal
print-scaling-default auto
printer-darkness-configured 50
sides-default one-sided
printer-resolution-default 203x203dpi

Here is a scan of two labels, on left version 1.0, on right version 1.1. What is wrong in my 1.1 configuration? My printout is a 800-x12-0 png image. Is this a problem with print-scaling-default?

[gregoiregentil]

Any idea on my problem?

[michaelrsweet]

You could try using print-scaling=fit; it is possible the resolution information in the PNG file is bogus which will lead to bad scaling.

[michaelrsweet]

Closing for now; if you have more info we can continue trying to determine the cause of your problems.

[gregoiregentil]

Thank you for your help. I'm fine with the "unable-to-reproduce". For the records, unfortunately, the issue is not fixed for me. I tried all options possible for "print-scaling-default". Either it was the problem or the printer didn't want to print. I'm fine to keep lprint 1.0 on my computer which works very well.