Use a different hdmi cable.
Mac hdmi cable not working.
Try to use a different cable to connect your mac to your display if possible.
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.
Usb c or thunderbolt 3 usb c port.
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.
Use a different port.
Connects directly to hdmi using an hdmi cable.
Connects to hdmi using an adapter such as the apple usb c digital av multiport adapter.
This works in most cases where the issue is originated due to a system corruption.
If that is not that case then plug the cable in the port again making sure that it is not loosely fit.
Inspect the hdmi port connections and see if the cable is correctly fixed in the port.
Usb c or thunderbolt 3 usb c port.
However the hdmi was not working at all.
I expected a grandiose welcome of a fine hp display.
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.
Mac computers that have any of the following ports can connect to hdmi devices.
In the case that your hdmi cable is damaged replacing it with a new one should resolve the issue.
Connects directly to hdmi using an hdmi cable.
What can he do.
Connects to hdmi using a third party mini displayport to hdmi adaptor.
Jack bought the hdmi adapter for his iphone to watch video on the tv and it doesn t work.
Learn how to identify the ports on your mac.
Check the hdmi cable to see if there are any physical damages.
I took out my hdmi cable plugged in the usb c and the external monitor.
For example you can use a usb c to hdmi cable for some mac models.
I was using a working macbook pro with catalina as the latest os.
But you d think that if apple sells the item they wouldn t break it with an update.
Apple says to be sure the tv is set to the right hdmi.
It could be copy protection.
Connects to hdmi using a third party mini displayport to hdmi.
You can easily do it by using the cable to connect another pc with its monitor or tv.
Mac computers that have any of the following ports can connect to hdmi devices.
Connects to hdmi using an adaptor such as the apple usb c digital av multiport adaptor.