Intel® Wireless Display is only supported on Windows* 7 and Windows* 8.
Are you sure you tried in extended display mode?
You may also reset Intel® WiDi.
How to use Extended Video Mode with Intel® WiDi
http://www.intel.com/support/wireless/wtech/iwd/sb/CS-032456.htm
How do I reset the Intel® WiDi application settings on my computer?
http://www.intel.com/support/wireless/wtech/iwd/sb/CS-031077.htm