Windows 10: How to force output HDR

Hi there,So months ago I had connected my TV to my computer with an HDMI cable and played 4k60 HDR just fine. This was the reason I bought the TV after all, to play Destiny in HDR. Fast forward to today and a couple forced windows updates, and now my computer no longer recognizes my TV as supporting HDR features. I know it does, my Mac knows it does, PS5 and Xbox series X knows it does, yet windows struggles with this simple task. I even bought a new 70 foot HDMI cable thinking that maybe a better HDMI cable would help and it didn't.I've read through all the help articles relating to HDR and

:)

 

Forced HDR stopped working after .218 update of WM10

Thanks for your suggestion but soft reset didn't improve the situation.

Anyway, today I updated Camera app to the latest release on both phones and now I have the following:

on 950XL forced HDR is not always working in the sense that, under some light conditions, it simply doesn't work unless the flash is also active. In other words, under these conditions the result is exactly the same of what Auto HDR setting gives. I also
verified that no .nar file is created along with respective .jpg one. I guess this is not what "forced" HDR is intended to be.

on 830, the "Something went wrong" message is not appearing anymore during postprocessing and everything seems working well now. I noted Auto HDR setting is not present (now just on or off).

Thanks for your feedback.

 

HDR fullscreen problems

Version: Windows 10 17134

GPU: NVIDIA 1080 Ti (Driver 397.31)

Display: LG OLED 55" B6P

Problem: Windows HDR implementation barely works properly. Here's a list of issues I've seen so far:

1: SDR applications that are not exclusive fullscreen start in HDR mode, distorting the colors. If an OS overlay [such as the volume overlay] come up, the display will go blank until the overlay dissapears.

2: SDR applications that are exclusive fullscreen go blank. From what I can see, my display is in SDR mode, so I'm guessing there's a mismatch between Windows trying to output HDR content and the display receiving it. [And no, the problem is on Windows
end; the display can handle HDR just fine on other systems]

3: I've had a case where an SDR application, on exit, somehow resulted in the system HDR setting being disabled. I've also had another case where on exit the system is reporting its in HDR mode, but outputting SDR even on the desktop.

So in short: Windows is not managing HDR properly.

 

HDR To monitor thats not support HDR flag in the EDID handshake

I have small HDR Monitor from Atomos. Sad its not possible

Unfortunately, the Ninja Flame was mainly developed for use as an On-Camera Monitor/Recorder, so it's geared
to work with HDMI Video Signals that just get fed out of a Camera without the need of there being specific HDR flags. Computers, on the other hand, are a little more difficult to work with when it comes to outputting HDR Content to a Display as you've already
noticed. They require an HDR flag in the EDID handshake, but the Ninja Flame, unfortunately, can't provide one.

I'm wondering is possible in registry or with som tool to force HDR signal to my external monitor when connected
Windows 10. Or do i need to get a new graphic card like DeckLink Mini Monitor 4K?