Thank you lystor for your replies.
Originally Posted by lystor
Your Xorg server doesn't use fglrx video driver. Currently used driver - radeon
Create custom /etc/X11/xorg.conf with fglrx driver.
How do I do that?
Uninitialised file found, configuring.
Fail to link to fglrx-libglx.so, please check whether driver is installed correctly
Saving back-up to /etc/X11/xorg.conf.original-0
"aticonfig --initial" created a new xorg.conf file but when I restarted Fedora it didn't start in GUI mode. (it hanged right after the progress bar completion) so I had to use command mode & delete that xorg.conf file.