All versions of Centrify DirectControl on RHEL 7.x
$ sudo systemctl restart messagebus
Due to an issue on RHEL 7 with no gnome-screensaver available and authconfig issue, smart card authenticaltion does not work
Due to a RHEL 7 issue, you need to reboot the machine or run the following commands from ssh console in order to make GDM UI login work.
$ sudo systemctl restart gdm
This has been reported as a Redhat bug from the URL link below and is out of Centrify control.
This bug is now fixed in Server Suite 2015