Printing fails silently, and "cups-pki-invalid" error is hidden. #255
Description
Error in cups log (but not shown as a popup unless I missed it), and the printer tray icon offers no way to solve the issue. It just doesn't print (silent failure).
Here are the full details: OpenPrinting/cups#1072
michaelrsweet from CUPS says it should be handled by the GUI code:
What needs to happen is the desktop software should display this alert with an option for resetting (deleting) the certificate. That is outside the scope of this project. Ordinarily the certificate should not change for a while (default on most printers is 10 years for their self-signed certs).
Disabling the PKI check disables an important security check. . .
-michaelrsweet OpenPrinting/cups#1072 (comment)
@sample What matters is the certificate the printer is currently using. I've noticed that some printers (incorrectly) generate a new self-signed certificate after a firmware update. They can also do this if their hostname changes.
. . .