"Fedora 12 provides "out of the box" support for kernel mode-setting
with ATI R600/700 series graphics hardware, but it does not provide 3D
acceleration by default. However, Red Hat's X developers have made it
very easy to enable this 3D support for the ATI Radeon HD 2000, 3000,
and 4000 series hardware by just installing a special Mesa package from yum"