Just went to plug in my miniport display in my 2011 MBP 13" for an HDMI output and it doesn't work. I ran a software update and it had a thunderbolt update 'for some users who are experiencing black displays.' I ran the update, restarted the MBP and my HDMI output still doesn't work. It worked the last time I tried to use it on new year's eve. Anyone else experience a thunderbolt port failure lately?