On Wed, Jun 22, 2022 at 8:32 AM Patrick O'Callaghan pocallaghan@gmail.com wrote:
(See ... for context)
I have a Brother All-in-one wireless laser printer/scanner which has worked for years using the manufacturer's driver blob. I now want to configure it using the printer-driver-brlaser package from the Fedora repo.
I've uninstalled the original Brother driver and deleted the printer config using the CUPS interface.
I then added a new printer using the KDE System Settings widget, and attempted to print a test page. This appears to go through, but then the queue status shows "Unable to locate printer".
I deleted that configuration and tried again using the CUPS web interface. This shows up as:
dnssd://Brother%20DCP-7055W._ipp._tcp.local/
I suspect this detection doesn't adequately check the details of the IPP support. Given the age of the printer, IPP may not be implemented "properly" by current standards.
Printing a test page again shows "Unable to locate printer". This happens both using the generic IPP driver and the specific model driver from the RPM package.
I looked at the Brother DCP-7055W Advanced User's Guide, which is dated 2012. I can't see any mention of IPP or AirPrint.
https://discussions.apple.com/thread/7199902 says this model was not on Apple's list of supported printers for AirPort in 2015.
https://wiki.gentoo.org/wiki/Brother_networked_printer says the printer works, but gives no configuration details
https://www.pwg.org/ipp/ippguide.html tells you to "Consult your Printer documentation or the Printer's Bonjour (DNS-SD) registration information to determine the proper hostname, port number, and path to use for your Printer." It would be interesting to know why IPP is failing, but I suspect you are stuck with Brother's rpm.
The CUPS systemd service and AVAHI daemon are both running, as is systemd-resolved, which handles DNS-SD (I reloaded the latter just in case.)
I'm out of ideas. To repeat: both printing and scanning work correctly with the manufacturer's driver, so it's not a hardware or connection problem.
Any thoughts before I give up and revert to the binary blob?
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