CONFIG_AGP=y CONFIG_AGP_VIA=y CONFIG_DRM=y CONFIG_DRM_RADEON=yI'm not sure if this will help, but what about CONFIG_AGP_ATI ?
isn't this "key" (CONFIG_AGP_ATI) supposed to be used for ATI mobo chipset?
try fglrx for debian from flavio stanchina's website. however, you might have to do some modifications to your kernel (e.g., putting agp-related stuff as a modules is recommended, see the docs at that page)For ATI, you have a couple of options: you can use the open-source DRI drivers, or you can use the "semi-open-source" drivers that ATI has developed (which are available on their website). Find out which one you are using, and then try the other one.
regards, -- Lubos _@_"