I have an HP HP_LaserJet_MFP_M234sdw_C0FB67_USB_, one of those modern "no driver" multifunction printers. It works fine on Bullseye. I have the printer hooked up via USB to a server, hawk, and it prints just fine.
I have a client, ideapc, which sees the printer and prints to it just fine. I also have an ancient i386 IBM R51 running Bookworm, dragon. On dragon, using system-config-printer, I can see the printer automagically discovered. I can open up the queue window for the printer, and request a test page. Alas, I see the test page in the queue briefly. The queue window says "processing - not connected?", then "Printer error". Then the print job disappears, leaving no error message. (This is a change in behavior from Bullseye. I do not like it.) The printer does come awake and report an error when I ask for the test page. I don't see anything in the printer's logs. Logging on both machines shows no errors. I am running firewalld on dragon, and did enable logging for unicast. firewalld-cmd reports the following, among other things: services: ipp ipp-client mdns samba-client smtp ssh -- Does anybody read signatures any more? https://charlescurley.com https://charlescurley.com/blog/