Gfilui

I have a printer plugged into my NAS. This previously was working without any issues, but after moving some of my network hardware around the house and plugging it back in it has decided not to work.

I can detect and set up printers fine, but when I send it a job it won't print until I reboot my desktop. When I do that it prints straight away.

andy@AndyDesktop:/home/andy$ /usr/lib/cups/backend/snmp 
andy@AndyDesktop:/home/andy$ sudo /usr/lib/cups/backend/dnssd 
[sudo] password for andy: 
DEBUG: Querying "BONJPRINT40Airprint41._ipp._tcp.local"...
DEBUG: sent=0, count=1
DEBUG2: query_callback(browser=0x5557ed44fdc0, interfaceIndex=2, protocol=0, event=0, fullName="BONJPRINT40Airprint41._ipp._tcp.local", rrclass=1, rrtype=16, rdata=0x5557ed451280, rdlen=256, flags=5, context=0x5557ed44f300)
DEBUG2: query_callback: "txtvers=1".
DEBUG2: query_callback: "qtotal=1".
DEBUG2: query_callback: "priority=0".
DEBUG2: query_callback: "rp=printers/ELEPHANTPR".
DEBUG2: query_callback: "ty=HP Photosmart C4200 series".
DEBUG2: query_callback: "note=HP Photosmart C4200 series".
DEBUG2: query_callback: "product=(GPL Ghostscript)".
DEBUG2: query_callback: "pdl=application/pdf,application/postscript,application/vnd.cups-raster,application/octet-stream,image/png".
DEBUG2: query_callback: "URF=none".
DEBUG2: query_callback(browser=0x5557ed44fdc0, interfaceIndex=-1, protocol=-1, event=2, fullName="BONJPRINT40Airprint41._ipp._tcp.local", rrclass=1, rrtype=16, rdata=(nil), rdlen=0, flags=0, context=0x5557ed44f300)
network dnssd://BONJPRINT(Airprint)._ipp._tcp.local/ "HP HP Photosmart C4200 series" "BONJPRINT(Airprint)" "MFG:HP;MDL:Photosmart C4200 series;CMD:PDF,PS,PNG;" ""
DEBUG: sent=1, count=1
DEBUG: sent=1, count=0
andy@AndyDesktop:/home/andy$ lpinfo -v
Password for andy on localhost? ********
lpinfo: Forbidden
andy@AndyDesktop:/home/andy$ avahi-browse -a -v -t -r 
Server version: avahi 0.7; Host name: AndyDesktop.local
E Ifce Prot Name Type Domain
: Cache exhausted
: All for now
andy@AndyDesktop:/home/andy$ avahi-browse -a -v -c -r 
Server version: avahi 0.7; Host name: AndyDesktop.local
E Ifce Prot Name Type Domain
: Cache exhausted

From the above I take it to mean that CUPS hasn't fully picked up the printer. Since it was working fine before moving the PC and NAS around the house I suspect I've got some kind of residual config that's messing things up? Removing and reinstalling the printer using various different protocols hasn't made any difference.