I would suggest that you try the following. Search the menu entry "Printing" in the "Preferences" menu and click with the right mouse button. You will see a small menu where you can select "Properties". A window will open named "Application Shortcut". Edit the command string so that it reads "sudo system-config-printer" and click on the OK button. Try again to configure your printer.
@Capricorny
Thank you for the input.
My printer was detected too (see above) and as Knoppix comes with "CUPS" already installed, I didn't
have to do anything more as to slolve the Authentication issue the way Klaus recomended!
@Capricorny
Thank you for the input.
My printer was detected too (see above) and as Knoppix comes with "CUPS" already installed, I didn't
have to do anything more as to slolve the Authentication issue the way Klaus recomended!
Forgive me my ignorance about this, but I haven't needed to do anything with the printers recently outside the web interface for CUPS. Having been through a multitude of printer configuration/administration tools over the years, I'm very glad to have one single place to go. But then there must be something I can't do through that web interface? I haven't run into any authentication issues.