[SOLVED] Printer/Cups quit working. ?

[GregM]

One day the printer worked in a normal fashion, the next day it didn't.
Kubuntu 22.04
Opened CUPS and I had the red Xs on the printer/fax.
Usually I just delete the printer and reinstall it.
This time it could not find ANY printers.

Any suggestions?

[Snowhog]

Wireless or wired connection? I'm assuming wireless. Make and Model of the printer? Have you tried booting the previous kernel?

[GregM]

Wired
HP Laserjet Professional M1212nf MFP
I have not tried the previous kernel.

The wife's computer did the same thing at the same time and she connects to the house system via a wireless hookup to the modem.
I think I will fiddle with the printer's hardwire connection to the modem this morning.

[GregM]

What a deal that was.
Apparently 20.04 and the HP software were having an argument over who was going to run the printer.
20.04 won.
During all that I discovered that the wife's computer was still running 18.04 so I updated hers to 20.04.
It all seems to be working now.
Weird.