Printers partially recognizes network printer, but isn't able to even print a test page

[fargoth]

Printer is Canon iP7250, CUPS version is 2.2.10, Ubuntu 19.04 (2019-02-03 10:50).

In Printers panel, I can see it being present without the need to add it - which is great.

But I don't see it as an option to print to in GTK print dialogue, I can't select it as default printer from that Printers panel (that option is there in the dropdown menu when I click the cogwheel - but it doesn't seem to do anything - not even mark it as selected).

Clicking on Printing options I get a blank window with Test Page button at the top - which doesn't seem to do anything.

Sometimes clicking on Printer details (when it's a second time?) crashes the application.

After the crash it's no longer visible, but Add new printer restores it - although it then says it searches for drivers and says it had failed adding the printer.

When it doesn't crash, clicking on Printer details shows

"Address: Canon iP7200 series._ipp._tcp.local:631
Driver: Canon iP7200 Series"

Clicking in the screen on select from database, and selecting Canon Pixma iP7250 CUPS+Gutenprint

Enables a normal Printing Options dialogue (i.e. not completely empty as before) - but the test page still doesn't print. It's says the printers state is stopped, and localhost:631 says the printer is pointing to file:///dev/null

On 18.04 I can print to this printer fine after manually selecting this getenprint driver or using

lp -d Canon_iP7200_series <file name>

Without the need for any drivers installation, however, the Printers panel doesn't add it properly there either (in the automatic way). In this version of Ubuntu, even the
lp -d Canon_iP7200_series <file name> command doesn't work (says lp: No such file or directory)

Also driverless doesn't return anything (it says ipp://411824000000.local:631/ipp/print on Ubuntu 18.04)

And lpstat -e only occasionally reports seeing the printer (it works consistently on 18.04).

Going to additional printer settings... and clicking on adding an ipp printer with the device URI ipp://411824000000.local:631/ipp/print (which I know from 18.04 by typing driverless) and selecting the gutenprint driver for Canon Pixma iP7250 does work and prints the test page.

But if I didn't know that URI (which I could not see using driverless on this vesion of Ubuntu) - I wouldn't have been able to add my printer. This is even a worse experience than in 18.04 - and the experience there was bad enough (as described in https://bugs.launchpad.net/ubuntu/+source/system-config-printer/+bug/1815307)

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: gnome-control-center 1:3.30.2-4ubuntu2
ProcVersionSignature: Ubuntu 4.18.0-11.12-generic 4.18.12
Uname: Linux 4.18.0-11-generic x86_64
ApportVersion: 2.20.10-0ubuntu19
Architecture: amd64
CasperVersion: 1.402
CurrentDesktop: ubuntu:GNOME
Date: Fri Feb 15 20:38:48 2019
ExecutablePath: /usr/bin/gnome-control-center
LiveMediaBuild: Ubuntu 19.04 "Disco Dingo" - Alpha amd64 (20190203)
ProcEnviron:
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
 PATH=(custom, no user)
 LANG=C.UTF-8
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)