It should be pointed out that having the “Detect Displays” button not being visible in Mac OS is not an indicator of a problem or a bug, and it’s certainly not indicative of an issue with the output device, it’s simply hidden from casual use, presumably because most of the time the Mac usually has no issues finding and connecting to external screens. Of course you’ll want to be sure the physical connection is secured for the external display, and if you’re having any issues check the cables to the LCD monitor, projector, or TV.
Macbook air not detecting external display gfxcardstatus how to#
How to Use Detect Displays for External Screens on a Mac If you’re having any issues either showing the feature or getting an external screen to show up properly, this is what you’ll want to do. This applies to secondary displays of all types, whether it’s an external monitor, AirPlay mirroring, AirDisplay, a projector, an HDMI connection to a TV, or whatever other additional screen you have attempted to connect to the Mac. This does not indicate a problem with the Mac or with the external screen you wish to use, you simply have to toggle the Option key to make the detect feature visible and then be able to run the detection as usual.
Like some other features in new versions of macOS and Mac OS X, the “Detect Displays” button is now hidden by default, no longer immediately visible in the Display Preferences of macOS Monterey, macOS Big Sur, macOS Mojave, Sierra, macOS High Sierra, OS X El Capitan, OS X Yosemite, and OS X Mavericks.
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