Question Onkyo TX-NR646 not outputing 4k resolution - help?


Novice Member
Just spent an insane amount upgrading to 4k, and now i'm getting a bit frustrated with my receiver seeming to block 4k resolution - I was hoping someone on here might be able to shed some light on situation.

Receiver = Onkyo TX-NR646 (using hdmi input 1 : hdcp 2.2)
Projector = Sony VPL-VW1100ES (using input 1 : hdcp 2.2)
Media Player = Roku 4 (hdmi hdcp 2.2)

Basically I plugged it all in turned it on, the Roku player came up : it all looked very nice but only running 1080p. So I went to the Roku's settings and selected 2160p, screens goes blank and comes up with the message: "This content cannot be displayed on your TV. Please make sure HDMI connection on your HDCP 2.2 capable TV"

Firstly I thought it might be the old hdmi cable that runs around the room to the projector that might be the issue: so firstly yeah I plug my laptop directly into the projector (via HDMI), boom 2160p no problem. I used the same long hdmi lead that goes to the receiver - so I assume that means the cable is definitely at least a 1.4 : so not the problem.
But when I go laptop -> receiver -> projector, it only runs at 1080p and won't let me increase the resolution!!!

As far as I'm aware everything I'm using is hdmi 2.0 and hdcp 2.2 : anyone got any idea why it might not be working @ 2160p?

Thanks in advance, Chase


Novice Member
Solved it.
For fun I tried hdmi 2 instead of hdmi 1 on the projector..... works now. I guess the the hdcp 2.2 isn't working on hdmi 1. Hmm not good for a £19k projector! I'd pay that for it, I bought it second hand, and so don't have any warranty! Hopefully HDMI never plays up.

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