That's correct, you should NOT compile the DRM modules into your kernel if you plan to use the fglrx driver, because it would conflict. If you are sure you'll never want to use the XFree86 driver, just disable the DRM modules, but the best course of action is to enable them as modules and let the user-space drivers load the modules they require. I added this as a note on my page.
Flavio,Just to make sure I understand, you think that this is a correct configuration (from stock kernel 2.6.8-2-686-smp):
CONFIG_DRM=y CONFIG_DRM_RADEON=m ... CONFIG_FB=y CONFIG_FB_RADEON=m Since the radeon stuff are modules. Thanks again, Mathieu