Unfortunately hdmi was totally dead.
Mac hdmi cable not working.
If you haven t already swap out your hdmi cable for a hi speed hdmi cable with a speeds of at least 10 2 gbps but preferably 18 gbps.
I took out my hdmi cable plugged in the usb c and the external monitor.
Use a different hdmi cable.
In the case that your hdmi cable is damaged replacing it with a new one should resolve the issue.
Learn how to identify the ports on your mac.
For example you can use a usb c to hdmi cable for some mac models.
Mac computers that have any of the following ports can connect to hdmi devices.
Apple says to be sure the tv is set to the right hdmi.
Hdmi sound not working mac if the issue is with your computer or a laptop you should try using restoro which can scan the repositories and replace corrupt and missing files.
This works in most cases where the issue is originated due to a system corruption.
Usb c or thunderbolt 3 usb c port.
It could be copy protection.
But you d think that if apple sells the item they wouldn t break it with an update.
I was using a working macbook pro with catalina as the latest os.
Connects to hdmi using an adapter such as the apple usb c digital av multiport adapter.
Connects to hdmi using an adaptor such as the apple usb c digital av multiport adaptor.
If that is not that case then plug the cable in the port again making sure that it is not loosely fit.
Connects directly to hdmi using an hdmi cable.
You can easily do it by using the cable to connect another pc with its monitor or tv.
If you have an hdr enabled device such as a uhd blu ray player or streaming device connected to an hdr compatible tv it s possible that the tv is not recognizing the hdr encoded content.
Learn how to identify the ports on your mac.
Leo says that he gets this complaint a lot and there may be an update in ios that broke the connection.
Use a different port.
What can he do.
Inspect the hdmi port connections and see if the cable is correctly fixed in the port.
Usb c or thunderbolt 3 usb c port.
I expected a grandiose welcome of a fine hp display.
Mac computers that have any of the following ports can connect to hdmi devices.
Connects to hdmi using a third party mini displayport to hdmi.
Connects to hdmi using a third party mini displayport to hdmi adaptor.
Check the hdmi cable to see if there are any physical damages.
Jack bought the hdmi adapter for his iphone to watch video on the tv and it doesn t work.