HDR Not Working Lately? Series X

I had the same / similar issue with my old 4K 60hz none HDR / HDMI 2.0 monitor when watching movies and some times in games with the Series X,

As soon as i upgraded my monitor to a 4K 144hz monitor that has HDR / HDMI 2.1 ports, i no longer had this problem,

I'm not sure what the problem is, but my guess is that the HDMI 2.1 port on Series X doesn't play well with HDMI 2.0 port of monitors, or it's the Series X trying to force HDR on, even if the monitor does not have / support HDR and the HDR in Series X menu's is turned off.

Thank you for your answer, but I think you did not understand my question. To sum up: 4k doesn't matter.

The problem is that hdr blu-rays work fine on ps5 (good colors).

So the HDR to SDR conversion is correct. But on xbox series x, in comparison with ps5, the picture is too dark.

So the HDR to SDR conversion on the xbox series x is bugged. I don't think it's a washout color issue.

Sorry for the late reply. I have my Series S hooked up to my Fire TV in the bedroom and my X hooked up to a TCL S4 series in the living room. Neither one is idea for HDR content. At least not with the Xboxes. I tried my hand with an high end LG TV to see what HDR would look like and while some games looked better than others it was still a mixed bag. Some games will just look awful with HDR on regardless of what TV your playing off of. I really would like to do tests with a PS5 to see if I get similar results.

I've had this occasionally and as far as I can tell it's related to how my Series X (or One X before that) invokes HDR on my TV. It's intermittent and was often resolved by launching a HDR game or rebooting my XBox.

RDR2 never received a Series upgrade. The Series Snis playing the base Xbox One version. To access the One X version you would need a Series X

You should disable auto HDR on the console if it’s not playing well, and make sure to do the same on your TV. That’s the fake HDR where the tv guesses not the real thing.

It’s also possible the two are clashing