Hi,
a) Only vesa is supported with this chipset with actual debian packages.
b) since 2 years I'm trying to get a usuable fglrx driver
see http://ati.cchtml.com/show_bug.cgi?id=253
c) Only git versions of radeon drivers seems to work in 2D,
no DRI nor OpenGl support
-> http://dri.freedesktop.org/wiki/Building
DRI not supported cause different Memory Model.
mit freundlichem Gruss -- regards
Thomas