Those options do not work when KMS is in use, they need to be done directly in the kernel with radeon module options. If you want to continue using them in xorg.conf, you can get the old functionality by booting with radeon.modeset=0 added to your kernel command line and then they will work.
Those options do not work when KMS is in use, they need to be done directly in the kernel with radeon module options. If you want to continue using them in xorg.conf, you can get the old functionality by booting with radeon.modeset=0 added to your kernel command line and then they will work.