I've set up WiDi for my boss using a Dell Inspiron 15z and his LG 55LM9600 Smart TV (WiDi built in). It worked well for a while, but recently the audio has been problematic; dropouts and stuttering have made it essentially useless. I've updated the PROSet software and Centrino 2230 drivers. The firmware for the TV is current. Updating the display and audio drivers actually made things worse; the laptop connected to the TV, but the TV would only display an "invalid file" message, and I had to do a system restore to reestablish the limited functionality we had.
I see that others have had similar problems in the past, and I was wondering if anyone has made any progress in finding a solution.