The ASUS M51Ta works only with ati oss driver, fglrx is unable to init graphics. It seems that fglrx has problems when there are 2 VGA devices:

01:05.0 VGA compatible controller [0300]: ATI Technologies Inc RS780M/RS780MN [Radeon HD 3200 Graphics] [1002:9612]
02:00.0 VGA compatible controller [0300]: ATI Technologies Inc Mobility Radeon HD 3650 [1002:9591]

Usually the system crashes then. That's the worst fglrx experience possible even on PURE ATI/AMD hardware. When will that work? Must be a joke when Intel+ATI works better than pure AMD+ATI.