I recently installed the package that allows having virtual printers under CUPS.

I used the localhost:631 GUI to add a virtual pdf printer. I do not remember what I did. Now there are two virtual printers, one named Cups-PDF and the one I named pdfprinter. I cannot find the output from either. I do not know how to ask them.

From firefox, print to file still works, but does not do what I want. Even if it did, I’d still want to know what’s going on with my virtual printers.

From an error log:
Unable to create avahi client: Resource temporarily unavailable”