Windows 10: why is my HDR on but when i try to turn it off it says HDR is not supported

why is my HDR on but when i try to turn it off it says HDR is not supported

:)

 

HDR instantly turns off when clicking use HDR

Hi, I'm using a TV as a monitor and auto HDR works with games. I can go into the menu of my tv while playing red dead redemption 2 and it says Picture Mode HDR10. But I need to calibrate the HDR. When I try to use the microsoft calibration tool it says I need to enable HDR. I go into the settings, it says HDR supported, but when I click to turn it on the screen flickers and HDR instantly goes to off. The auto HDR is kind of useless without calibration, and I can't calibrate... Any ideas?

 

HDR is not supported

I can only suggest you contact Lenovo support to verify which driver package you should be using so that HDR is enabled for this device.

 

HDR won't enable!

I have the exact same issue. I'm running a Corsair One with a GTX 1080. I know my TV can output HDR but for some reason any time I turn it on, it immediately toggles back off.

There is no error message that occurs and when I run the Direct X Diagnostic Tool (Recommended by Microsoft here: HDR settings in Windows - Microsoft Support), there is no actual value for HDR. The "HDR Support"
value simply isn't in that text file. It does not say "Yes" or "No" as there is no option whatsoever.

I have verified all of my drivers are installed correctly and ensured that I'm using HDR compatible HDMI cables and an HDR compatible TV (Samsung KS8500). There's no visible reason as to why this problem is occuring, but it absolutely is.

Update: I enrolled my PC in the Windows Insiders Program and now when I run the Diagnostic Tool, I do have a listing for "HDR Support: Yes" but when trying to turn on HDR support, the setting still toggles back off.