"Unable to get printer status" error with network printer installed with CUPS

Question

In an Ubuntu PC, I added a network printer through the CUPS web gui (it is an HP LaserJet Professional P1102), with the following url

http://my_host_name:631/printers/HP_LaserJet_Professional_P1102

Then I added the printer to other computers (a Windows and a Mac one), and they correctly detected it. However when I try to send a document to the printer, with one of the three computers (Ubuntu included), the following error appears both in the CUPS web gui and in the Properties window of the Ubuntu Printer Setting:

Unable to get printer status

How to solve it?

Answer 1

You have already connected your printer your LAN via wifi and connected the printer to your Ubuntu pc. Or at least your pc detected the printer.

The reason the connection did not work with me, is because I had http://printer_ip instead of ipp://printer_ip as the connection URI.

So in my CUPS web gui, I see something like this now:

Description: Canon PIXUS MG3530 Location:
Driver: Canon PIXUS MG3530 - CUPS+Gutenprint v5.2.11 (color, 2-sided printing) Connection: ipp://192.168.0.110 Defaults: job-sheets=none, none media=iso_a4_210x297mm sides=one-sided

Hope this helps.

Answer 2

I solved the issue by manually inserting the printer IP address like in this answer: how-do-i-modify-a-printers-ip-address-in-cups#913534

Somehow CUPS wasn't able to handle the url anymore, although it was still capable of correctly identifying the printer.

Hope it helps (it took days for me to figure it out!)