Originally Posted by amplifire
when i install this software called Novatium server, then no one can login through Graphical interface. Not even root. But there is no problem in logging through tty.
No idea as I don't know what the software entails (package names?) or what the installation did ('rpm -q packagename --scripts'?). You could also verify your installation and see if any /etc configuration file checksums changed and take it from there. If there's errors or restrictions there might be something in your system logs.