LG 42PG20D: HDR on LG UB980T that has UHD Deep color

I have the same issue, but with a LG 55UB8500. It has UHD Deep Color, I get 4k resolution, and 10 bit color but the Xbox One S will not allow HDR. It says here on xbox.com under the troubleshooting that UHD Deep Color is one of the many other names for HDR,
yet it doesn't work. Could this be a firmware issue on the xbox?

I'm going to buy a lg 55 its has hdr 10 and deep color mode

For me, it's not a "UHD" problem. I get Ultra HD resolution (4k), as well as 10 bit color, but I cannot get the xbox to recognize HDR for gaming or movies. Maybe my TV (LG 55UH8500) doesn't have HDR, but I would think with 10 bit color, and the UHD Deep
Color setting (on my hdmi 3 input only) that it would work on that input.

I have the same issue that Prezdead mentions above. My LG has UHD deep color, and I get 4K resolution but it still doesn't work with HDR. I find it funny when it's listed here on xbox.com that one of the many names for HDR is UHD Deep Color. It's also weird,
because if what I had plugged into the hdmi port on my tv didn't support deep color, it would give me a message. I don't get a message, but it won't allow HDR. So it's like it works with the Xbox One S... but it doesn't. A little frustrating to say the least.

I chatted with an LG attendant. I have a 60 inch LG 60UF7700 model with this Ultra HD Deep Color function. The attendant told me that Ultra HD Deep Color is not the same thing as HDR, they are different functions and the problem of my Xbox One S is not enabling
the HDR is because my TV does not have HDR support. I was frustrated.