My tv supports HDR and Dolby Vision but during the test it’s stating my TV doesn’t support it. Any help?

Make sure 1) you’re connected to a compatible HDMI input. HDMI 1.4 inputs will not work 2) Make sure deep color or UHD color is enabled for your HDMI inputs on your display. 3) There is a difference in cables. Get a new, modern hi-speed HDMI cable. There are many inexpensive options. 4) If you’re going through an AVR, you could have a myriad of issues..... you need a DV compatible AVR. Most modern 4k AVR’s will pass HDR10 however.

Check for any firmware updates for your Television. Mine didn't work either. I did firmware update and turned off the tv and back on again and it worked flawlessly.

Sony eSupport - Drivers & Software Updates - Select a Model

I have an LG OLED55B6P 4K tv that supports both flavors of HDR. I was having the same problem. I found what fixed it for me was going into my TV’s settings and going to General and under that I found a DEEP COLOR setting. I had to turn it on for my HDMI input and as soon as I did that, I rebooted the set and the Apple TV 4K switched over to 4K HDR. This was driving me nuts but I’m glad i found the fix. Hope it helps anyone else here having the same issue.

MRH62188 - The Yamaha 683 won't support Dolby Vision passthrough until a software update. It is supposed to come out this year but I'm not sure if it has already or not. Check to see if there is a software update for your AVR.

I have the 65" of the same TV. Go into Settings - External Inputs - HDMI signal format- then select Enhanced. Then, in Picture Adjustments, select Advanced settings - Video options and turn all the settings to Auto. But definitely make sure the HDMI cable you have is rated HDMI 2.0 - 18gbps. Hopefully that helps.

I just picked up the LG OLED65C7P and AppleTV 4K, and was having problems like you as well. I had read ahead of time to get a solid cable, and I had all the config set up appropriately. The magic trick ended up being #2 above - UHD/deep color was for some reason only enabled on HDMI 3 on my TV inputs, so the test failed. So things worked great there, but not on the ARC input I had been using. Not only that, but you can only modify the deep color toggle when that HDMI port has something connected to it.

Long story short...once I figured that out (a few weeks later) all is good. And Dolby Vision looks amazing!

I had a similar issue - both on my Sony A1E when the ATV4K was running through my Denon X4300H, and on a Sony 930D direct to TV.

I found that the Monoprice Active Slim 18 Gbps cables I had been using for 4K devices could not pass a 4K60 HDR signal. Then I tried the Apple branded thin high speed cables I had been using for Apple TV Gen 3 and Gen 4 could pass 4K60 HRD 4:2:0 but not 4:2:2. I thought it was weird the older passive cables worked better than the 18 Gbps active ones, but still not quite right.

Then I finally changed everything to Monoprice Passive Slim High Speed cables (not 18 Gbps) and now I can get 4K60 HDR 4:2:2. Seems active cables can be a problem, even if supposedly capable of 18 Gbps.

I was already using the Passive Slim High Speed cables for everything non-4k, and I had some extras around from when I switched to the active 18 Gbps cables for 4K sources.

So, it seems cables can make a difference, considering 4K60 HDR 4:2:2 is running at very high bandwidth, and before the ATV 4K was released most 4K content has been 4K24 at less than half the bandwidth. If I still had problems, I would get 18 Gbps certified passive cables.

I don't know about Dolby Vision because the firmware update for the A1E has not come out yet.

Sam,

Unfortunately, even though Dolby Vision is supported with direct connection to your TV, when you route the signal through your AVR, The receiver has not been updated to pass through the Dolby Vision metadata.

Check with Denon to see if a firmware update is forthcoming.

Just to add my own findings after reviewing the thread and troubleshooting my issues.

Setup:

• LG 65B7A
• Denon X4300H
• AmazonBasics High-Speed HDMI Cables, 10"

Using an AmazonBasics cable I connected the ATV directly to the TV and enabled Dolby Vision without issue. When connecting through the AVR, the Dolby Vision check would fail but I was able to eventually enable HDR. The Chroma 4.2.0 worked but the 4.4.0 would result in signal drops. I took the HDMI cable being used for the AVR to TV, and connected it to the ATV, yet another ATV to TV test. This cable failed the Dolby Vision enable test. I got a different (yet identical) Amazon cable and replaced the bad cable going from AVR to TV. Reconnected the ATV to the AVR with the cable that worked before and the Dolby Vision test was successful.

All of these Amazon cables I bought together in a 3 pack so they are all identical except one obviously isn't working as it was intended. Sending it back to Amazon. The Amazon cables work but there could be a chance you got a bad cable that doesn't work with Dolby Vision.

Vizio M75 e1

Denon avr x4300h

I was ready to pull whatever hair I have left out of my head trying to figure out why I couldn’t get Dolby Vision 60Hz to work. HDMI on the vizio was set to full UHD color and the Denon AVR was updated with the firmware that supports Dolby Vision passthrough. Long story short, switched out my 15ft high speed HDMI out for a 15ft premium high speed certified HDMI from monoprice and boom! Everything worked like a charm. It shouldn’t matter whether the cable is premium or not but, from reading everybody’s similar issues, it seems more of a manufacturing quality control issue between cables more than anything else.

Very helpful comments from many people which is great. Just to add my own experience after reading this thread.

I have a Panasonic OLED TH-65EZ780Z (very similar to LG) and a Yamaha sound bar YSP-2700. When connecting my ATV to the Yamaha sound bar I could not achieve HDR, pretty much as everyone else has commented.

I then tested with a direct connection which worked perfectly and allowed HDR to the TV. However, I had to use the correct HMDI input for it to work (HMDI 1 as HMDI 2(ARC)) is the connection to/from the sound bar). What I discovered is that the ARC is working correctly and passing the ATV audio to the sound bar essentially bypassing the pass through requirements that cause the issue. So ATV video goes direct to myTV in glorious 4K HDR and the audio is through the sound bar.

Everything else seems to be working OK including the Yamaha multicast which I control through the App on my phone.🙂

Thanks again for the helpful comments that allowed me to think this through for myself

You may need a newer HDMI cable.

“...for 4K HDR, you may require a compatible Ultra High Speed HDMI cable”

Excerpt From Apple TV User Guide - Apple Inc.

https://itunes.apple.com/us/book/apple-tv-user-guide/id1050195582?mt=11

The ultra High speed cable exist : Belkin Ultra High Speed HDMI Cable (2m) - Apple

(48 Gbps) It seems to be a HDMI 2.1 Cable

I bought this cable with the new Apple TV 4k and tested it with a LG 55C7 oled screen (directly connected to the tv).

It works perfectly in Dolby vision 60Hz

I tested the "test mode" by curiosity and it seems to fail ( I got a magenta tint over the screen as result of the test).

I just unplugged my 50ft monoprice dynamic view HDR cable from receiver and put it in my A4K and it would not display HDR. My guess now is there is a distance limitation with the unit or it has to be connected directly to the tv. Summary:

PS4 Pro plays 60hz HDR through my receiver which is connected by this 50ft cable no problem. PS4 also plays HDR fine connected directly to the tv with the 50ft cable and the 6ft cable that came with the system. A4K will only do HDR connected to tv with a 6ft cable.

I had a similar problem with my Sony XBR TV, and I solved it by setting the TV input to "Enhanced" HDMI.

Then I ran into a second problem where the HDR video looked muddy. I solved this by resetting the the TV via "Reset (HDR Video Vivid)"

Maybe other (non-Sony XBR) TVs have similar settings.

I wrote up my notes here:

https://www.toddheberlein.com/blog/2017/10/1/debugging-hdr-on-apple-tv