HDMI cable or adapter not working on your Macbook Air? This can be a hassle, especially if you want to use your Macbook as a HDMI display by plugging your Apple device into the TV for example. Your Apple device may not don't recognize your HDMI device. If your computer does not not detect your HDMI cable or that you meet TV screen display problems or a video projector, it will then be necessary to review a series of checks that you will find in this article. Good reading !

hdmi cable does not work on macbook air

Identify the ports on your Macbook Air

There are different ports (HDMI port, USB-C port, Thunderbolt 3 port, MiniDisplayPort…) on your Macbook Air device that can establish a connection to HDMI devices. You will need to know how to identify them if you want to connect a Macbook device to an HDTV, another display or any other HDMI device using a single cable or an HDMI adapter.

You will find in this article all the information necessary toidentify the ports on your Macbook Air device and finally be able to connect HDMI devices to it.

Check the condition of your HDMI cable as well as the HDMI ports

It might sound silly, but many times it's a problem with the HDMI device itself. If your HDMI cable is worn out ou damaged, its proper functioning will then be altered. In this case, it will be necessary to buy a new one, in store (FNAC for example) or even online. The same is true for the HDMI adapter: in order to function properly, it must be in good condition.

Do not hesitate to clean hdmi ports of your Macbook Air device either by blowing on it (taking care to avoid sputtering into the HDMI ports) or using compressed air. You can also wipe the inside of the HDMI ports on your Apple device with a little wipe, being careful not to press too hard. It is important not to dampen the cloth before the cleaning operation, as this may damage the HDMI ports of your computer.

Steps to get your Mac to recognize your HDMI cable

First make sure that the connection is well established. If so, here are the steps to follow if your Macbook Air device still does not recognize your HDMI device, HDTV, or display:

  • Turn off the HDMI device while making sure your Macbook Air is on.
  • You can now unplug the HDMI cable from your Macbook Air device (do not hesitate to check the cleanliness of the HDMI ports on your Macbook device again). Now reconnect the HDMI cable to your Apple device.
  • Turn on the HDMI device.

HDMI cable screen display issues on Macbook

If you are having screen display issues on your Macbook device (for example, if the video playing does not fit on the screen), here are the steps to follow:

  • Go to the menu Apple (the little black apple located at the top left of your screen)
  • Select System Preferences
  • Now click on Moniteurs
  • If your integrated keyboard has brightness controls, then you can press Option (by increasing the brightness) or Option (by reducing the brightness)

HDMI Cable Sound Problems on Macbook

The HDMI cable may not be able to receive audio from your Mac. In this case, here are the steps to follow in order to resolve this problem:

  • Go to the menu Apple (the little black apple located at the top left of your screen)
  • Click in the part System Preferences
  • Now select the tab Conclusion
  • Once in the tab Conclusion, then check that your HDMI device is correctly selected