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#External display for macbook air won't detect mac os sierra install
#External display for macbook air won't detect mac os sierra pro

External LG tv works fine and when I go to displays and hold option key to detect displays the internal still isn’t available.

#External display for macbook air won't detect mac os sierra install

Install went fine but now the internal display is not recognized.

#External display for macbook air won't detect mac os sierra pro

While I would like to continue using my MBox Pro as a monitor controller. Just updated a 2012 MacBook Pro to High Sierra while it was connected to an external display via thunderbolt to hdmi. Try to keep the resolutions consistent between multiple devices. 15 Installer with macOS Catalina Patcher Although it may appear easy to try. If you want a higher resolution while connected to a projector or other additional display, start with 1024 x 768 and then increase the resolution for each device and test for stability. The computer may letterbox (have black strips along each side) while a projector or other additional display is connected. Other settings may result in various displayed image issues (flickering, doesn't display on one device, etc.). If anyone from Apple should read this, I want you to know that doing away with the 'unnamed' person album in Photos on High Sierra was a real PITA and you should bring it back. NOTE WHEN CONNECTING TO A PROJECTOR: 1024 x 768 (60Hz for projectors) for both the computer display and projector is the setting known to be stable with all Apple computers and projectors used within the district. Save to external drive/ share with friends and family.

Select the resolution and aspect ratio you would like to use for each display/projector/monitor listed.

If the Display Menu icon does not appear in your Finder menubar, navigate to your Applications folder and open Display Menu by double clicking on it (see KB article #100 for more information about managing Display Menu in your Finder menubar).

Click on the Display Menu icon in your menu bar.

Display Menu provides an icon in the menubar along the top of your iMac or MacBook to quickly set the resolution for your computer display as well projectors, additional monitors, or other display devices connected to your computer. You can also choose the option to enable or disable Mirror Displays in the Display Menu drop down. The Display Menu application is installed on all Mac computers.