Bug#1013437: cups: Nothing prints from driverless IPP queues unless added via lpadmin

[Brian Potkin <claremont102@gmail.com>]

On Thu 30 Jun 2022 at 23:18:42 +0100, Gareth Evans wrote:

> On Thu 30 Jun 2022, at 14:57, Brian Potkin <claremont102@gmail.com> wrote:

[...]

> > 5. Send both files directly to the printer with
> >    netcat 192.168.0.14 9100 < ippeve.urf
> 
> Command seemed to hang or await job completion.  
> 
> Printer printed a good 30-odd pages, either blank or containing a line
> or two of binary/gibberish.
> 
> Device job cancel button did not respond.  Opened paper tray, pressed
> cancel button, job stopped.  Re-inserted tray, job continued.  Opened
> tray, cancelled job, ^C to stop netcat, power cycled printer, order
> restored.
> 
> >    netcat 192.168.0.14 9100 < drvless.urf
> 
> Same, though this time I stopped it after a few pages

Unexpected and not understandable. There is enough going on in this
issue not to want to take it further. Your MFC-L2740DW understands
Apple raster (image/urf):

  pdl=application/octet-stream,image/urf,image/pwg-rastei

and /etc/nsswitch.conf should print.

Anyway, you report that everywhere and driverless queues work. Also,
the error_logs show all filters completing successfully and cupsfilter
produces valid output. There do not appear to be any bugs in cups or
cups-filters.

I would suggest closing #472 at OpenPrinting.

Cheers,

Brian.