Macbook Air mid 2012 running El Capitan 10.11.3. Since updating to El Capitan the computer doesn't recognize the Samsung TV it always used to recognize via thunderbolt hdmi adapter. Tried all the tricks (NVRAM/PRAM reset, SMC Reset, Detect display, unplugging tv, changing cable, changing adapter) but nothing seems to work. Any new idea? It's really annoying at this point. Apple doesn't seem to have a solution to this.