Ever since upgrading to 10.7, my Dynex Mini-DP to HDMI adapter has stopped working. I've tried on both my 2011 MBP 15in, and my roommates 2010 MBP 13in with the same results. The LCD will flash blue while unplugging the adapter or HDMI cable but refuses to detect any TV plugged into it. Any ideas? I've tried different TVs/HDMI cables and zapping the PRAM without any luck. edit: on my 15in, plugging in the adapter switches to the AMD chip and unplugging it switches it back to the Intel graphics.