I used to be able to hook up my 2011 MBP to my flat screen with the Rocketfish Thunderbolt to HDMI adapter. Now when I close the laptop to use in clamshell the Samsung TV says This Mode is Not Supported. Weird, because it worked fine a few weeks ago, now it doesn't. I even tried a few different settings in the Display Preferences...nothing. I tried plugging in the thunderbolt adapter before booting, and after booting and restarted the computer while it is already plugged in. Nothing. Yes I have the MagSafe attached. If I have the MBP open, it works fine. Soon as I close the lid it displays the error on the TV. I am using the BT Keyboard and Magic Mouse. I also have BT Devices can wake machine enabled. Any ideas?