Unfortunately, not every external monitor is compatible with every Mac. Check the compatibility of your external monitor You should also check for updates to any hubs, extenders, or adapters you’re using. Check for new software updates to your Mac.įinally, visit the manufacturer’s website for your external monitor or display cable to check if there are other firmware updates to install. Then open the App Store and click Updates in the sidebar to install app and firmware updates. Open the Apple menu and go to System Preferences > Software Update to update macOS. If your external monitor isn’t working in any way, the first thing to do is make sure everything is updated. There’s your operating software (macOS), the particular app you’re using, and firmware built into the monitor, Mac, or even cables.
Various pieces of software are involved in making an external monitor work with your Mac. If your Mac’s external monitor isn’t working but you can’t find the exact problem above, you still might be able to fix it with the tips below. This list isn’t exhaustive, but it covers the most common external monitor problems. Everything appears too large or too smallĪ blurry monitor might be the result of using the wrong resolution.External display appears blank or black.To make sure this is the best article for you, here is a short list of the issues we’ll show you how to fix:
The tips below can fix a wide number of problems you might experience with your Mac’s external monitor.
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