External TV stopped working after connecting HDMI to monitor
I have a Mac Pro 2010 connected to a HP LP2475w monitor
I have a 40" Samsung Smart TV Connected to the Mac Pro via MDP - HDMI
Everything was working fine, I could enable / disable the Samsung TV via the 'Disable Monoitor' app ver 1.92
After connecting a HDMI cable to the monitor from a Elgato Game capture HD device, The Samsung Smart TV is no longer detected.
In System Prefs - Displays I cant select the Samsung Smart TV despite being connected - somehow, connecting a HDMI to the HP Monitor has knocked something out and perhaps has stopped some sort of signal getting thru?
Mac Pro (Mid 2010), OS X Mountain Lion (10.8.5)