There, nicely low key and easy to overlook is the setting: 'Displays have separate Spaces.' Here's a screen shot.ġ. The setting I need to tweak is found in OS X: Apple menu > System Preferences > Mission Control. For a minute, I was mystified because this is not how I normally work and not what I expected.Īfter a bit, I realized that this default behavior is a long lost remnant from the early days of my Yosemite install when I changed the behavior of my work Spaces. If I clicked on the display with a dimmed menu bar, it came to life. When I fired up my Mac Pro from that drive, I noticed that each of my two monitors had a menu bar. This story started when I did a clean install of Yosemite on an external drive. The immediate symptom is a rather confusing presentation of a full menu bar on each display, with the one that's inactive dimmed.
OS X Yosemite (and Mavericks), by default in a clean install, provide for each monitor, in a multiple monitor system, to have its own display Spaces.
