Diamond Multimedia Radeon X1550 PCI edition needs to have its PCI ID added. It is an RV516 core according to wikipedia, and its ID is 71A3 according to lspci. http://www.diamondmm.com/X1550PRO256P.php http://en.wikipedia.org/wiki/Comparison_of_ATI_graphics_processing_units#Radeon_R500_series
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