Windows 10: Windows 10 will not extend screen to second monitor on the only port where HDR works.

This morning, my second monitor suddenly stopped working. The monitor has multiple ports and the other ones work just fine besides the fact that HDR is unable to be turned on, it just automatically disables itself. This is the 2nd time this has happened and the first time it just fixed itself after a week. I have every windows "update" installed and all of my drivers are up to date, I've updated everything and reinstalled my drivers, I've done everything that you can try from googling "unable to extend screen windows 10" and "unable to turn on HDR windows 10". Spent a bunch of money on a good monitor and a pc to deal with this bullsh*t.

:)

 

HDR on HDR monitor causes issue on secondary, non-HDR monitor

I have an Aorus AD27QD (HDR) monitor as my primary display and an ultrawide 34UM88-P (Non-HDR) as my secondary. If HDR is enabled in windows and I go to a full screen video on the non-HDR monitor after a few seconds it will flicker blue then become severely
washed out. Coming out of full screen fixes this. If HDR is not enabled full screen shows the colors perfectly normally.

Secondarily, with windows HDR on on the Aorus, the colors dim pretty drastically. HDR content great but anything that isnt HDR is dim enough to make me question if my brightness is turned down. (Its not, its 90/100). The white of a plain browser window
seems so dim its nearly grey. I also tested this on what I know is a particularly vibrant (non-HDR) . HDR on? Terrible and muted. HDR off? Bright and vibrant.

I have played with in-monitor settings, nvidia control panel, factory reset of monitor, basically everything I can think of. Everything points to it being a windows issue.

I also tried out the suggestions from this post. And it pointed me to this
set of OS release notes which didnt solve my issue either.

I could really use some help because I am really feeling like I wasted my money on this monitor.

PC:

i5 7600k

GTX 1080ti

16GB 3000Hz Corsair RAM

Windows, CPU and GPU on latest drivers available.

Monitors:

LG 34UM88-P (HDMI)

Aorus AD27QD (DisplayPort)

 

extending monitors

Hello,

I hope I can help you today

solote allow two monitors but here I leave this possible solution

Step 1

Connect a monitor to the normal video card, using the necessary cable (DVI, VGA or HDMI). This will be the main screen, so place it directly in front of your computer's cabinet.

Step 2

Connect the second monitor to the alternative port of the video card, and then restart the computer. The PC will automatically detect the second monitor.

Step 3

Go to the "Show options" window by right clicking on the desktop, then select the "Properties" option. From there, click on the second monitor (which will appear in the drop-down menu), and then activate the "Extend my desktop on this screen" checkbox.

Step 4

Connect the third monitor to your original video card (if it has three outputs) or to another video card, and then restart the computer one more time.

Step 5

Go to the "Show options" window by right clicking on the desktop, then select the "Properties" option. From there, click on the third monitor (which will appear in the drop-down menu), and then activate the "Extend my desktop to this screen" checkbox

regards...

 

Windows 10 HDR problems in full screen.

Hello moderator

1. Its all the games I own that don't support HDR10. Basically when I full screen on a non-HDR game, the screen goes black for a few seconds and HDR gets disabled and all the colors looked washed out (Like its in SDR)

I took 2 screenshots, One is in window mode, the other is in full screen

Windowed mode (HDR on) : Imgur

Full screen mode (HDR off) : Imgur

2. Yes SDR looks washed out. I want to play my games in full screen and in HDR. Playing in windowed mode is a nightmare

3. I know because the monitor goes black for a few seconds and all the colors look washed out (As shown in the screenshots)

Sadly the fixes did not work

I updated the GPU drivers via GeForce Experience app.

My Monitor does support 4k HDR10

I tried lower the resolution and the refresh rate but that did not work.

Here is a video of my problem

YouTube Link :

Time Stamps :

0:00 HDR mode is on everything looks fine (In the video, when it looks high contrast, that means HDR is on)

0:35 I full screen the game. If you notice the high contrast is no longer there, the colors are washed out

0:46 I disable full screen and HDR mode is back on

*HDR looks high contrast, Ignore that, that's just the video itself.

Im also using windows 10 64bit 1809