New Mac Pro HDMI output to Onkyo Receiver Problems

[Avenger]

I am an owner of a new Mac Pro. I am having a strange problem. When I connect the HDMI output of the Mac Pro directly to my TV, all is well. But when I attach it to my receiver, the picture goes in and out. I tried adjusting the resolution settings but that didn't help. Could it be that the port on the Mac Pro is incompatible with the one on the receiver? I have a Playstation 4 and Xbox One connected to the receiver with no problems. Another interesting thing is that I tried a mini display port to DVI adapter and used a DVI to HDMI cable to the receiver and that works with no problems. So the problem is with the HDMI output just to the receiver. The only thing I can think of is that the receiver is a bit older so maybe it is in-compatable? But it does work with the PS4 and Xbox One.

Any ideas would be appreciated.

 

[Luca de Sensi]

Have you tried changing the HDMI cable?
I've been through that with my Mac Book and adapter. I couldn't get it to work without flickering... in the end it was an old HDMI cable.

 

[Avenger]

Have you tried changing the HDMI cable?
I've been through that with my Mac Book and adapter. I couldn't get it to work without flickering... in the end it was an old HDMI cable.

Seems you were right. I was using a brand new HDMI cable with the newer standards like ethernet pass through and such and it wasn't working. I tried an older cable from one of my other devices and it works. I don't know if it's because the newer standard the cable uses is incompatible with the older receiver or it may just be a defective cable. I tend towards the later since it should be backwards compatible.