How do I enable 3D support for my ATI Radeon card in Fedora?

RPM Fusion provides ATI driver RPMs that are designed especially for Fedora.

NOTE: If you have nVidia drivers installed, you must un-install them before installing these ATI drivers.

Here's how to install them:

1. Make sure that you're using my yum configuration from the installing software question.
2. Open a Terminal.
3. Become root:
   su -
4. Install the driver:
   yum install kmod-catalyst
5. Shut down X:
   init 3
6. Log in as root.
7. Enable the driver:
   catalyst-config-display enable
8. Rebuild your kernel configuration (otherwise it may try to load a conflicting driver during boot) and add some new kernel arguments to work around conflicts between the Catalyst driver and Fedora:
   new-kernel-pkg --kernel-args=nomodeset --mkinitrd --dracut --update $(rpm -q --queryformat="%{version}-%{release}.%{arch}\n" kernel | tail -n 1)
9. Reboot your machine:
   reboot

If you have any trouble with the RPM Fusion RPMs, please report a bug to the RPM Fusion Bugzilla.