Have an iMac 21", 2.5, Mid 2011 and a MacBook Pro Mid 2012 and I just bought a Mini display to connect them through the Thunderbolt. I cannot see that they are connected or the choice to connect it in the screen logo in the menu bar. Command F2 doesn't work.
Any idea whats wrong? how can I get the option to have them connected, not for data, just sound and image?