I know have enabled cups administration via web interface (used root account to authenticate), and now *it works*. I suppose it is a real gnome-cups-manager problem. The changes, however, show up in gnome-cups- manager now. It seems the gnome tool only can't write settings, but can read them.
Strangely though, with every change in the printer config CUPS shows E [08/Jul/2006:13:29:36 +0200] CUPS-Add-Modify-Printer: Unauthorized in /var/log/cups/error_log. But the changes do take effect, and the test pages (the cups and gnome-cups-manager ones) now print right. Printing from applications also works, and processing jobs show up in gnome-cups-manager. If you need any information for tracking down that bug let me know. However, I'm happy I can print now. :) -- changing settings (like paper size) have no effect in CUPS https://launchpad.net/bugs/52017 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
