- due to a lack of experience in debian I did not succeed to install the fglrx driver of ati
- I fixed the problem by substituing "vesa" for "ati" in xorg.config:
Section "Device"
Identifier "ATI Technologies, Inc. Radeon X700 Pro (RV410)"
Driver "vesa"
BusID "PCI:1:0:0"
Thus I have not the specific properties of my ati card (dual head, tv out),
but I get an operating X environment
Best regards
Erhard