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

[Brian Potkin <claremont102@gmail.com>]

On Thu 30 Jun 2022 at 01:03:27 +0100, Gareth Evans wrote:

> Does that mean cups-filters is not the appropriate package to file
> against?  If so, do you have any suggestions as to which might be?

It indicates the everywhere and driverless models are behaving as
expected. Let's continue this line of inquiry:

1. Set up queues
   lpadmin -p testq-ippeve -v ipp://192.168.0.14/ipp/print -E -m everywhere
   lpadmin -p testq-drvless -v ipp://192.168.0.14/ipp/print -E -m driverless:ipp://192.168.0.14/ipp/print   

2. As root, do
   cupsfilter -p /etc/cups/ppd/testq-ippeve.ppd -m printer/foo -e /etc/nsswitch.conf > ippeve.urf
   cupsfilter -p /etc/cups/ppd/testq-drvless.ppd -m printer/foo -e /etc/nsswitch.conf > drvless.urf
 
3. Open ippeve.urf and drvless.urf with less and check for UNIRAST at
   the top left corner. Give the file sizes. View the files with
   rasterview.

4. Check the printer has an open port 9100.

5. Send both files directly to the printer with
   netcat 192.168.0.14 9100 < ippeve.urf
   netcat 192.168.0.14 9100 < drvless.urf

Cheers,

Brian.