Proprietary drivers (current) for vidyuhi Radeon (fglrx) supported video card series Radeon HD 2000 and above. If your vidyuhi old, then you have to use the driver, who stuck by default, and then you can not read. Otherwise, start the console and drove off. Drava for CentOs-and 6.6 are in the repository ELREPO, you can turn it on
rpm -Uvh http://www.elrepo.org/elrepo-release-6-6.el6.elrepo.noarch.rpm
Installation on x64 systems such
sudo yum -y install kmod-fglrx fglrx-x11-drv fglrx-x11-drv-32bit.x86_64
Run the autoconfiguration
aticonfig --initial
And restarts the system
reboot
Like this.