First, driverless printers (automatically created queues for IPP printers) can be generated by cups-browsed and by CUPS.
So as a first approach you could try to stop cups-browsed to see whether you still get auto-created printers or not. sudo systemctl stop cups-browsed stops cu[ps-browsed and sudo systemctl start cups-browsed starts it again. Please tell whether this makes the auto-created printer go away or whether it changes its behavior to the better or to the worse. Another point to investigate is the PPD file (/etc/cups/ppd/<queue name>.ppd) of the auto-created printer. If it is not present or broken, the GUI can misbehave. The PPD files are automatically generated based on information polled from the printer via IPP. The IPP 2.x standards require that the printer provides sufficient information. Print queues auto-created by cups-browsed are full-featured CUPS queues and are present all the time while the printer is turned on and cups- browsed is running. So they have a PPD file all the time. Print queues auto-created by CUPS do only temporarily appear. They are created when a job is printed and they stay only for 1 minute after the job finishes. These queues are created purely by CUPS, cups-browsed does not need to be running. So check the presence of /etc/cups/ppd/Kyocera_ECOSYS_P6026cdn.ppd Does it exist? Please attach it. If it does not exist, run following command: lp -d Kyocera_ECOSYS_P6026cdn ~/,bashrc and post the screen output here. Does the job get printed? Then immediately check the presence of /etc/cups/ppd/Kyocera_ECOSYS_P6026cdn.ppd Does it exist? Please attach it. You can also check by yourself: sudo cupstestppd /etc/cups/ppd/Kyocera_ECOSYS_P6026cdn.ppd Does this give any FAILs? Please post the output here. You can also display the options defined by a printer's PPD file via lpoptions -p Kyocera_ECOSYS_P6026cdn -l If the queue is a temporarily auto-created queue from CUPS you most probably will need to run this command within 1 minute after printing. You can list queues which CUPS would auto-generate on-demand via lpstat -e The queues listed here but not listed by lpstat -v are queues which CUPS creates on-demand. A problem is that the GUIs often do not fully support such temporary, on-demand queues. Therefore we keep cups-browsed on Ubuntu so that we get permanent auto-generated queues. Please also run the following command (printer must be turned on): driverless This will give you the printer's IPP URI as output. Please post it here. ipptool -tv <URI> get-printer-attributes-2.0.test > attrs.txt Replace <URI> by the URI you obtained with the "driverless" command and attach the output file, attrs.txt to this bug report. This is the information which gets polled from the printer to auto-generate the PPD file. Please do not compress and do not package together any of the files we ask you to attach. Please attch them one-by-one, so that one can easily read them out of the browser when reading this bug report. Thanks. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1813825 Title: "driverless" printer workflow has bad usability/ is partly broken Status in gnome-control-center package in Ubuntu: Incomplete Bug description: Hi, since Ubuntu uses IPP ("driverless") printing, I have a bad time using printers. I don't know exactly which package this bug belongs to, I think it is gnome-control-center. I have a Kyocera EcosysP6026cdn network printer, which provides a PPD file by the manufacturer. (But I tested this behaviour as well with other printers from eg. Brother, etc., and on Debian and Arch linux too). When I switch on the printer, after a few seconds, it is found in Ubuntu and installed automatically as "Kyocera_ECOSYS_P6026cdn". So far, so good. 1) I can't remove this printer. If I WANT to install it using another protocol (dnss etc), it adds another printer, and I have 2 Printers. So it should be easy to switch off "driverless" printing. 2) Using it as "Default printer" does not work. Clicking the cog wheel, and using the menu item "Use printer by default" is clickable, but it does not save any setting: "printers-cc-panel-WARNING **: 20:45:36.812: cups-pk-helper: setting default printer to Kyocera_ECOSYS_P6026cdn failed: client-error-not-found" 3) "Printing Options" opens an empty dialog, see screenshot attached. This dialog is useless. 4) The "Printer Detail" dialog shows a "null" address and links to "(null):631", which is a 404. I think this "driverless" printing is still in a very "unstable" state. It helps discovering printers in new Networks where I attach too with my laptop, and I can print there basically, But most of the day I use my own printer in my office or at home, and I want to have my special settings for exact this printer with color profile, duplex settings etc. And this all is not possible with driverless printing. So, if you don't "fix" all the not-working options in the UI, please at least give us an option to easily switch off driverless printing at all. I really prefer the "old school" way of installing printers. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: gnome-control-center 1:3.28.2-0ubuntu0.18.04.2 ProcVersionSignature: Ubuntu 4.15.0-43.46-generic 4.15.18 Uname: Linux 4.15.0-43-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.5 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Tue Jan 29 19:34:39 2019 InstallationDate: Installed on 2019-01-27 (1 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) SourcePackage: gnome-control-center UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1813825/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
