You can do Eyefinity with the laptop screen, but the DisplayPort output has to be active. The Screen is passive, so an HDMI connection and a passive DP results in the monitor turning off. Unless Clevo did something weird with their hardware, an active DP adapter should be sufficient to use your internal screen with the HDMI and DP outputs for Eyefinity.
AMD Customer Care
The information presented in this document is for informational purposes only and may contain technical inaccuracies, omissions and typographical errors. Links to third party sites are for convenience only, and no endorsement is implied.