If your screen still isn't working, you'll want to give Appel Support a call, and they should be able to get you back on track. Cable Matters USB C Hub with HDMI, DisplayPort, VGA, USB 3.0, Gigabit Ethernet, 100W Charging - Thunderbolt 4 / USB4 / Thunderbolt 3 Port Compatible with MacBook Pro, Dell XPS, Surface Pro and More USB C dock with HDMI adds Ethernet, USB 3. We also recommend connecting with a shorter HDMI cable as longer HDMI runs can affect performance. ![]() Unfortunately, if you've tried all the tips above, it may be time to call in the big guns. Make sure your HDMI cable is functioning properly by testing with another device. ![]() Go System Preferences > Displays and then try connecting your external monitor to your Mac with that Displays menu open. I know this sounds a little odd, but ultimately, it's how I got my external display to work with my iMac (2021). Connect your monitor with display settings open If that doesn't work, try rebooting your Mac, but plug in your external display before you power on your Mac again. I would actually suggest trying two different types of reboots.įirst, reboot your Mac and then plug in your external display once your Mac is powered on and you're logged in. use an HDMI cable and adapter to connect your phone to your TV and mirror. I have tried several external USB-C to HDMI/VGA adapters, all of them pretending to be compatible with Mac, but none of them seem to work: Cable Matters 201014-BLK-N (USB-C to HDMI+VGA+RJ45+USB3.0+USB-C): only USB 3.0 port works (and Ethernet after installing specific AX88772 driver) dodocool 7-in-1 Multifunction USB-C Hub with Power Delivery. Rebooting your Mac is a great way to shock the system and fix any niggling problems you might be experiencing. While Apple TV does not work with Google Cast, some Fire TV and Roku streaming. ![]() ![]() Plus, if you're connecting your monitor via a USB-C hub, you'll want to try hooking that USB-C hub to a different port as well. Specifically, on the M1 iMac and the M1 Mac mini, you should be using a Thunderbolt port to connect to any monitor. If you're using a USB-C connection for your monitor, try a different port to see if that resolves the issue.
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