You may have to do some or all of the above steps to get sound coming out of your tv when connected using a displayport to hdmi cable to your macbook pro.
Hdmi cable macbook pro not working.
Connects to hdmi using a third party mini displayport to hdmi.
Also i have my amazon firetv connected via hdmi with no issue.
Select the hdmi device on the left panel and change the format values to 00hz.
Learn how to identify the ports on your mac.
Connects directly to hdmi using an hdmi cable.
Connects to hdmi using an adapter such as the apple usb c digital av multiport adapter.
I then had to disconnect my macbook pro to take it elsewhere.
1 try a different hdmi cable.
3 use thunderbolt to connect to the tv.
But still when i connect the macbook pro the laptop see the tv but the tv show no signale.
Mac computers that have any of the following ports can connect to hdmi devices.
Usb c or thunderbolt 3 usb c port.
The p2419h gives the notification that it is going into psm power saving mode and the screen shows no dp signal detected.
When i try to connect the p2419h using the usb type c to hdmi cable the same message is.
It was working fine for so long with the same tv with no issue.