Windows 10: HDR/SDR

In the HDR display settings in the SDR content brightness, it asks to Move this window to the display you want to adjust, does this mean if you have more than one display?

:)

 

Windows 10 HDR & SDR

Hi i would like to know is it possible in windows 10 to watch a HDR content on a SDR monitor so it looks like a proper SDR content.

Because more and more movies is HDR and on my HDR tv it is all great even in windows playing HDR content AND SDR content on HDR screen works properly. Problem is when playing HDR content on normal pc monitor picture is way to dark contrast is all wrong.
Yea i can fix it in some way in the players with the brightness and gamma sliders but it still doesnt look like the original sdr content.

I would like to fix this issue because soon al my video content will be in HDR but i am not always vieving this on HDR screen. Sometimes i would like to watch it on my phone or my pc or my friends house and in all those places with SDR screens looks way
worse than a normal SDR content.

 

Windows 10 HDR & SDR

Hi, jursleglov

If I understand correctly, you want to play HDR content on your PC with an SDR display. This may be possible, but it will depend on the app and probably also on hardware.

The Movies & TV app in Windows can support this on non-HDR laptops that have a sufficiently-bright display. The reason why it is limited to laptops is that there needs to be OS control of brightness settings (not available for external monitors) and some
OS influence of LCD backlight operation (Windows doesn't control the backlight but gives suggestions to the display driver based on the kind of content being shown).

 

HDR-capable monitor becomes completely unresponsive when switching between SDR and HDR under certain conditions

I have the Alienware AW3423DW in HDR Peak 1000 mode. Here are the steps to replicate the issue:

The relevant system information is as follows:

• Windows 10 version 21H2
  
• Nvidia GPU with GeForce Game Ready Driver version 528.02
  

1. Power on computer with HDR already enabled in Windows settings from previous session. The computer will start in SDR mode but will switch to HDR as soon as it reaches the lock screen.

2. Launch an application that does not natively support HDR but which runs in exclusive fullscreen (e.g. a non-HDR supported game).

3. Tab out of the game and switch off HDR in Windows settings.

4. Monitor switches off and is completely unresponsive, after a few seconds the Windows "device disconnected" sound effect can be heard.

5. At this point, the only way to restore the monitor is to unplug and replug the power cable of the monitor. Restarting the PC or unplugging and replugging the display cable does not work.

This is how I have manually recreated the issue, but the way it has happened to me most often is by simply alt-tabbing out of an application while running in HDR mode. If the application being tabbed out from is particularly resource-demanding and results in the monitor spending a long time switching between HDR and SDR, then it will completely fail and switch off, becoming unusable.

I have already tried reinstalling my graphics driver which did not help. How can I determine which component (i.e. Operating system, GPU, Monitor) is the point of failure that is causing this problem?