On Tue 26 Sep 2017 at 00:15:31 -0500, Kent West wrote: > So when I go to select a printer in Firefox, there are many autodiscovered > printers to choose from. I don't want any of them in my list. How do I turn > this off?
See later. But first stop or purge cups-browsed. > I found the two "browse" options in /etc/cups/cupsd.conf, but they make no > difference. I found /etc/cups/cups-browsed, but killing that daemon makes > no difference. In fact, killing CUPS altogether makes no difference (except > my desired printer then goes away), so obviously this isn't a CUPS thing. Correct. > Then I discovered Avahi (and had to go into learning mode - apparently this > is also known as "Bonjour" and "Rendevous" and "ZeroConf", depending on OS > and version and situation). The most obvious tweaks in > /"etc/avahi/avahi-daemon.conf", the two "disable-publishing..." options, > don't do anything. Indeed not. They affect publishing, not discovery. > But I can "systemctl disable avahi-daemon" altogether to get rid of the > unwanted printers. But that seems like overkill, and disables all of > Avahi's function (I was pleased to learn I can find non-Windows clients on > our mostly-Windows-oriented network using Avahi, just by adding ".local" to > the hostname - ex. "ping bigserver" fails, but "ping bigserver.local" gets > replies - sweet!). Without avahi-daemon running Firefox cannot discover printers or print servers on the network from their DNS-SD broadcasts. > So, any one know how to tell Avahi to not publish found printers to > Firefox's print dialog? All GTK applications can use avahi-daemon for printer discovery. It is GTK you want to control, not avahi-daemon. gtk-print-backends is the relevant property to use. Its default value is "file,cups". I think Firefox uses GTK3. In /etc/gtk-3.0 or ~/.gtk-3.0 you want to create the file settings.ini and see what the contents [Settings] gtk-print-backends=file do for you. (The file name and format is different for GTK2). -- Brian.
