TX-RZ3100 not allowing 4K at all

[oinkoink offline]

Hi

I have a Onkyo TX-RZ3100 updated to the latest firmware.

When I connect a 4K (Playstation 4 Pro and Amazon Fire 4K) source to a hdmi socket (HDCP 2.2) on my TX-RZ3100 I only get HDCP 1.4 compliance and 1080p video and not 4k.

TV is 4K HDCP 2.2 compliant (Samsung UE75MU7000 HDR 4K Ultra HD Smart TV, 75")

If I connect the Playstation 4 Pro or Amazon Fire 4K directly to the Samsung TV I get 4K display.

Anyone have any ideas ?

[oinkoink offline]

Anyone ? Onkyo Support:this is supposed to be one of your flagship receivers. Please could you advise. Thx.

[ForumMod10]

The TX-RZ3100 does not have reported issues with any of the mentioned products and will support HDMI 2.0/4K UHD/HDR. If you are having problems passing through 4K HDR it appears there could not be enough bandwidth in the cable to support the addition of the receiver in the mix. How long are the HDMI cables and what is the brand make/certification of the cables used.

[oinkoink offline]

Finally figured out why I was not getting 4k from a 4k source.

Onkyo receiver has two HDMI outputs for display. One is connected to a 4k tv the other to a non 4k projector.

If I disable the output to the projector then I get 4k on my 4k tv from the Onkyo connected 4k sources.

If I want to watch anything via the projector I have to re-enable output to the secondary HDMI out port.

Can this be fixed with a firmware fix ?

[ForumMod10]

Hello. No. Due to EDID/HDCP the signal can not be "Split" to output 1080P and 4K at the same time to both displays. The display would have to match the other in terms of capability or the output will drop to the lowest.