Comment 13 for bug 173762

The reason the fields are blank is because displayconfig-gtk populates them by reading from xorg.conf. In modern Xorg such as shipped with Hardy, most of this stuff is now automatically detected and is no longer needed in xorg.conf. Due to these changes, displayconfig-gtk has become obsolete, and we're deprecating it in favor of an updated Screen Resolution tool which has xrandr 1.2 support. For a more detailed explanation please see bug 144641.