Windows 10: Unlike HDR, Vivobook pro 16 OLED display showing Black Crush in SDR after switching to...

The display showing crushed blacks in only SDR at 120hz in Hybrid mode and it's a bit more aggressive with both 60hz and 120hz in Discrete GPU mode.On HDR it's perfect with every modeI've rest my laptop with bios and even reinstated drivers and gave it to service while they changed even the display and the motherboard but it didn't resolved https://www.reddit.com/r/ASUS/s/LgOVfpWdJzThe above posted link had description and it represents the issue with tagged images and in this others who owned the same model had the same issue.

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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?

 

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.

 

SDR content brightness revert to 0 after monitor HDR status change

I'm currently running windows 11 OS build 22000.282, using Odyssey G9 monitor from Samsung showing as LC49G95T in 'Settings-System-Display-HDR'.

After use HDR option turned on, my monitor blacked for a few seconds, then at the top left corner it shows 'DisplayPort1 (HDR)', then my screen slowly getting dimmer and dimmer (while I'm at desktop and only Settings opened). Changing SDR content brightness slider is indeed working, and I can make SDR content looks as bright as before HDR turned on. But if I try to launch a game doesn't support HDR or Auto HDR, for example Rainbow Six: Siege, my screen blacked few seconds and top left corner says 'DisplayPort1', my game looks normal as in SDR mode.

Then when I close the game, my screen blacked and it goes back to 'DisplayPort1 (HDR)', and slowly getting dimmer and dimmer, the brightness at this point is the same as the SDR content brightness slider in HDR settings moves all the way to 0.

When I check in the settings, the slider keeps at the spot last time I configured, but if I move it a little, the brightness changes to set value. This option is currently broken for me, as every time my monitor goes from non-HDR to HDR, I need to move the SDR content brightness slider again to make it work.