Install AMD's driver for ATI graphic cards (RHEL, CentOS, Oracle... kmod-fglrx, fglrx-x11-drv...)

Download and install E.L-6.7 (x86_64) but not E.L-6.8 or newer version, everything you need
E.L-6.7 has too.
Then i tried install fglrx on the E.L-6.9 (newest image) i got some bugs, but by this method driver works good.

# yum check-update (don't update)
   
# yum install kernel-2.6.32-573.12.1.el6 kernel-devel-2.6.32-573.12.1.el6 kernel-firmware-2.6.32-573.12.1.el6 kernel-headers-2.6.32-573.12.1.el6

# reboot 

Boot up with new kernel-2.6.32-573.12.1 

# yum remove kernel-2.6.32-573.3.1.el6 kernel-devel-2.6.32-573.3.1.el6

# yum groupinstall "Development tools"

# yum install elrepo-release yum-conf-elrepo

# yum install *fglrx*

# reboot (everything should run good)

# amdxdg-su -c amdcccle (if it doesn't work, then...)

# amdcccle

# yum check-update

# yum update kernel*

# reboot

Boot up with the newest kernel ... :)

Now "amdxdg-su -c amdcccle" (AMD Control Center (Administrative)) should work too.

# amdxdg-su -c amdcccle

Nice job.

AMD Radeon Software Crimson Edition 15.12 Proprietary RHEL Graphics Driver

https://support.amd.com/en-us/download/desktop?os=RHEL%20x86%2064

https://support.amd.com/en-us/download/desktop?os=Linux%20x86_64

http://www2.ati.com/relnotes/amd-catalyst-graphics-driver-installer-notes-for-linux-operating-systems.pdf



ELRepo : kmod-fglrx

https://elrepo.org/tiki/kmod-fglrx