I've been using WIDI with my Alienware M18x S2. It only works with the internal (Intel) graphics card, but that's not an issue. I just upgraded the software to 22.214.171.124. And now it won't connect to my LG 42LM6200-UE HDTV. The upgrade broke what was working. Is anyone else having problems with the upgrade?
There is a possibility that the built in adapter on the TV has trouble indeed with the updated Intel(R) wireless Display software you may try downloading a previous version of the software, and uninstalling the current one, (first uninstall the current software from control panel/uninstall a program) see the link below for the Intel(R) Wireless Display software that you may test: