I use a hp color monitor with my macbook pro. Usually works fine. Yesterday, i couldn't load firefox on my monitor. The icon was in my dock on both screens and I could not launch it on monitor screen. there is a setting somewhere in Firefox where you can choose Display 1 or Display 2. When I clicked on Display 1 the issue was fixed. Now I don't have my dock at the bottom of my monitor screen where I can launch Firefox, I have to load it on my laptop and then the firefox home page appears on my monitor. I can't find the settings for Display 1 and 2. Please help me understand and fix this problem. Thank you very much Keith Hope