I first posted this to the Fedora list, it then devolved to a nice discussion on
NetworkManager. I now believe I should have posted it here first.
I have a number of machines (hardware and VMs) running CentOS 7 and KDE. In all cases
firewall-config is not functional.
First, the service check boxes are not functional. When you click on one, it don't
change to "checked", and nothing changes on the firewall. However you do see a
"Changes applied" in the status bar at the bottom.
Sometimes, if you go to permanent mode and attempt to edit a zone, the whole desktop locks
up as soon as you click on the default target dropdown. This only happened twice.
When I run firewall-config from the command line I see the following:
org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.NetworkManager was not
provided by any .service files
(firewall-config:5079): Gtk-CRITICAL **: gtk_tree_view_get_path_at_pos: assertion
'tree_view != NULL' failed
with the second line repeating many times and often while attempting to interact with the
We don't use NetworkManager except on laptops, and so do not install it. Though we do
install NetworkManager-glib, if only because some packages require it.
After seeing a similar bug on the RHEL I also installed NetworkManager-libnm, but that did
not make a difference. That RHEL bug also mentioned this problem only occurs on KDE, and
not Gnome. And we only install KDE when a GUI is required, or desired.