Hi, Seems there is a bug in src/radeon.h : #if defined(__powerpc__) typedef enum { RADEON_MAC_IBOOK = 0x00000001, RADEON_MAC_POWERBOOK_EXTERNAL = 0x00000002, RADEON_MAC_POWERBOOK_INTERNAL = 0x00000004, RADEON_MAC_POWERBOOK_VGA = 0x00000008, RADEON_MAC_MINI_EXTERNAL = 0x00000016, RADEON_MAC_MINI_INTERNAL = 0x00000032, } RADEONMacModel; #endif I don't understand why the values "seems" decimal power of 2, while there are declared as hexadecimal. This should be either : #if defined(__powerpc__) typedef enum { RADEON_MAC_IBOOK = 00000001, RADEON_MAC_POWERBOOK_EXTERNAL = 00000002, RADEON_MAC_POWERBOOK_INTERNAL = 00000004, RADEON_MAC_POWERBOOK_VGA = 00000008, RADEON_MAC_MINI_EXTERNAL = 00000016, RADEON_MAC_MINI_INTERNAL = 00000032, } RADEONMacModel; #endif OR #if defined(__powerpc__) typedef enum { RADEON_MAC_IBOOK = 0x00000001, RADEON_MAC_POWERBOOK_EXTERNAL = 0x00000002, RADEON_MAC_POWERBOOK_INTERNAL = 0x00000004, RADEON_MAC_POWERBOOK_VGA = 0x00000008, RADEON_MAC_MINI_EXTERNAL = 0x00000010, RADEON_MAC_MINI_INTERNAL = 0x00000020, } RADEONMacModel; #endif OR #if defined(__powerpc__) typedef enum { RADEON_MAC_IBOOK = 1 << 0, RADEON_MAC_POWERBOOK_EXTERNAL = 1 << 1, RADEON_MAC_POWERBOOK_INTERNAL = 1 << 2, RADEON_MAC_POWERBOOK_VGA = 1 << 3, RADEON_MAC_MINI_EXTERNAL = 1 << 4, RADEON_MAC_MINI_INTERNAL = 1 << 5, } RADEONMacModel; #endif I may be wrong ! Please explain me. Étienne.