I upgraded a headless F20 box to F21's server product.
xorg-x11-xauth is installed, in order to make X forwarding work over the ssh
connection.
After installing the firewall-config rpm manually, it's obvious that many of
its dependencies are missing.
I was able to figure out that some of the default font packages that must be
installed.
However, firewall-config still comes up with some of its display widgets
obviously not getting rendered correctly, and they do not respond to mouse
clicks or the keyboard.
I posted a screenshot comparison between a working firewall-config, and
broken one in bug 1176331.
Anyone has any idea what dependency can result in such a broken display?