Bug 459494

Summary: Cannot add Brother printer over network: Configuration completes, but no printer is added
Product: [Applications] systemsettings Reporter: Wilbur Jaywright <zargulthewizard>
Component: kcm_printer_managerAssignee: Daniel Nicoletti <dantti12>
Status: RESOLVED FIXED    
Severity: normal CC: noeerover, plasma-bugs-null
Priority: NOR    
Version First Reported In: 5.25.5   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In: 5.x-6.0.0
Sentry Crash Report:

Description Wilbur Jaywright 2022-09-21 17:29:31 UTC 
SUMMARY
I am trying to add a Brother MFC-L2750DW over the network, which had previously worked, but since a recent update, jobs were failing, and after reinstalling Neon from an up-to-date ISO, I now cannot add the printer at all. I have tried manually adding it with lpadmin, upon which it got added with a raw printer driver, but attempting to change the driver to the correct one from systemsettings resulted in an error: "Invalid argument."

STEPS TO REPRODUCE
1. Have a Brother MFC-L2750DW on the same network as the KDE Neon system (not connected via USB).
2. Attempt to add the printer via System Settings -> Printers.

OBSERVED RESULT
The printer will be discovered, and the correct driver selected, but upon clicking "Finish," no printer is added.

EXPECTED RESULT
The printer is added and is usable.

SOFTWARE/OS VERSIONS
Windows: No
macOS: No
Linux/KDE Plasma: KDE Neon 5.25 user edition
(available in About System)
KDE Plasma Version: 5.25.5
KDE Frameworks Version: 5.98.0
Qt Version: 5.15.6

ADDITIONAL INFORMATION
The official Brother driver packages resulted in a printer being added, but when i tried to print, it's status changed to: Idle - "Unable to locate printer."
Comment 1 Mike 2024-04-03 23:50:04 UTC 
Can you try this with Plasma6?
Comment 2 Wilbur Jaywright 2024-04-03 23:56:41 UTC 
I have since abandoned Neon for Fedora, and Plasma 6 is not released for that yet. However, network scanning was recently failing, until I checked and saw that the printer was telling me I might need to reconfigure my firewall. I allowed the ports through the firewall that Brother recommended upon searching online for them, and now scanning works. I didn’t try adding the printer over the network on this distro recently, but it worked when I tried it just now.
Comment 3 Mike 2024-04-04 00:05:39 UTC 
It should be fine when/if you get to Plasma6, so I'm going to resolve this.  If you have any trouble don't hesitate to open an issue.