via
- https://askubuntu.com/a/1015716/439392
- https://lists.ubuntu.com/archives/ubuntu-devel/2016-December/039586.html
Put host & port into /etc/sane.d/xerox_mfp.conf :
tcp host_address [port]
tcp 192.165.2.19 9400
Samsung ULD is not working with Ubuntu 18.04. The driverless printing feature did work however.
Open http://localhost:631/ Choose "Administration" Click "Add Printer" (Log in in the log-in pop-up with your credentials)
Look for your printer under the "Discovered Network Printers:" for an entry which contains the word "driverless". Select the entry and click "Continue".
Decide whether to share your printer and check the "Connection". It should start with "ipp://" or "ipps://", if not, go back a step and check whether you have selected the correct entry. Click "Continue".
On the next page choose the correct model, preferring the entry containing "driverless". Usually this already happens automatically. Then click "Add Printer".
Now set the option defaults, especially the correct page size/media size and click "Set Default Options".
Select "Print Test Page" under "Maintenance".