Windows 10: Enabling 144Hz with two DP cables on my XV273K freezes my system since I tried using HDR.

I used to use this mode my monitor has, which is to combine two DP signals in the same monitor, so they would drive half a 4K at 144Hz. I tried a few times enabling HDR, and it can be done, but I had to do it in an order, and it didn't look too good anyway, so I didn't bother using that a lot.Then, after a clean Windows install, I wanted to test HDR in a game, so I enabled that, but it doesn't anymore, the system keeps freezing, the screen flashes in a loop. I have to use either just one cable, or disable the 144Hz mode, which just disabled one screen or cable, since it's the same monitor. I

:)

 

VESA Announces DP8K, HBR-Supporting Cables and Work on Next-Gen DP

I think for future proof system a single cable should be able to handle:

• Full USB 3.1 gen2.
• 4K 144Hz HDR (12bit).

This without compression. and things to spare also.

With compression, without USB (or with 5gbps USB 3.1 gen1).. it better can handle 2x 4K HDR streams at 120Hz.

 

Cannot Enable HDR

The HDR option does not appear in 'Display' settings.

I am using:

Intel UHD 630 Integrated Graphics

Cardas HDMI cable

LG 27UK650 Monitor

The LG monitor's HDR works with a Playstation 4 Pro and Cardas HDMI cable.

The LG monitor has no manual HDR setting. It only enters HDR mode when it receives proper signal, first.

Windows 10 only offers HDR setting when it receives proper signal from the display, first.

How can HDR be force-enabled on Windows 10?

 

HDR won't enable!

I'm having the same issue described above and by everyone else in the thread. Before, HDR was greyed out because I had my 4k TV and my 2k monitor plugged in at the same time, so I started unplugging my monitor when I wanted to play/watch stuff in 4k because
it allowed me to enable HDR and advanced color.

Today, however, Windows said something about restart for an update and ever since then I haven't been able to enable HDR and advanced color. I click to turn it on, the screen goes black, pops up saying keep changes or revert and HDR is disabled again. I
tried different resolutions and always had the same result. I tried another HDMI cable and same thing.

Has anyone figured out what the cause is yet? I can't tell if HDR is enabled or not and the game I'm playing, Wolfenstein 2, allows you to enable/disable HDR in-game so I'm not in a rush to get this issue fixed but I would like to soon.

First when I enabled HDR on my PC the screen was all hazey so I had to go into nvidia control panel and change the color settings. I set the desktop color depth to highest (32-bit), output color depth to 8 bpc (only option), output color format to YCbCr444,
and output dynamic range to Limited (only option) and that fixed the haze issue. The color settings are still set to those despite HDR being disabled according to Windows display settings.