[SOLVED] Video conflict between 2 displays

[Jim Weitz]

I have an ASUS Strix 3090 connected to 2 displays, first is a Vizio 55" E55-E2, the second is an LG WebOS TV OLED 65B7A. I also have an HTC Vive connected to the GPU as well, but it doesn't seem to cause a problem. With the Vizio connected and on displaying video from the PC it is fine. As soon as the LG is connected to the GPU the Vizio goes blank. If I leave the LG connected and unplug it from the 120v outlet, the display on the Vizio comes back to life. Plug it back into the 120V and it goes blank. Both are connected via HDMI. Could this be a cable problem? The PC is an ASUS Prime Z590P, Intel 11600K, 32 GB RAM, and the ASUS ROG Strix 3090 OC. Any help would be greatly appreciated.

 

[white.a.drew]

I have an ASUS Strix 3090 connected to 2 displays, first is a Vizio 55" E55-E2, the second is an LG WebOS TV OLED 65B7A. I also have an HTC Vive connected to the GPU as well, but it doesn't seem to cause a problem. With the Vizio connected and on displaying video from the PC it is fine. As soon as the LG is connected to the GPU the Vizio goes blank. If I leave the LG connected and unplug it from the 120v outlet, the display on the Vizio comes back to life. Plug it back into the 120V and it goes blank. Both are connected via HDMI. Could this be a cable problem? The PC is an ASUS Prime Z590P, Intel 11600K, 32 GB RAM, and the ASUS ROG Strix 3090 OC. Any help would be greatly appreciated.

Your trying to use two massive screens as much as there are some cards that can support that not all can it may just be the card isn't able to handle multiple screens of that stature. The best I know I can do with my setup is a single 55in or bigger with one or two possible 40in screens but the moment you try use use several screens over 55in a lot of the time it's a battle

 

[Jim Weitz]

Well, that makes a lot of sense, but the 65" doesn't even have to be on. It can be powered off, and just plugged in. As soon as I unplug it, the 55" comes back on. I'll do a little investigating as to what that 3090 can support. Thanks for your thought.

 

[Phaaze88]

3090 & 3090 Ti Graphics Cards

TITAN class performance for the ultimate in gaming.

www.nvidia.com

(click on specs)

Maximum digital resolution: 7680 x 4320
[Note in small print further down: Up to 4k 12-bit HDR at 240Hz with DP1.4a+DSC. Up to 8k 12-bit HDR at 60Hz with DP 1.4a+DSC or HDMI2.1+DSC. With dual DP1.4a+DSC, up to 8K HDR at 120Hz]

Both of those TVs are 4K 120hz. The HTC Vive is 1080 x 1200 per eye, for a total of 2160 x 2400, with a refresh of 90hz.


Isn't the problem that too much is being run from one gpu? The combined digital resolution is 9840 x 6720.

 

[Jim Weitz]

3090 & 3090 Ti Graphics Cards

TITAN class performance for the ultimate in gaming.

www.nvidia.com

(click on specs)

Maximum digital resolution: 7680 x 4320
[Note in small print further down: Up to 4k 12-bit HDR at 240Hz with DP1.4a+DSC. Up to 8k 12-bit HDR at 60Hz with DP 1.4a+DSC or HDMI2.1+DSC. With dual DP1.4a+DSC, up to 8K HDR at 120Hz]

Both of those TVs are 4K 120hz. The HTC Vive is 1080 x 1200 per eye, for a total of 2160 x 2400, with a refresh of 90hz.


Isn't the problem that too much is being run from one gpu? The combined digital resolution is 9840 x 6720.

I really don't use both the big displays at the same time. I did previously, but only as a novelty just to take a picture. They both did work at the same time a couple times. Normally I use the 65" OLED for movies, and the 55" as a monitor. The biggest inconvenience is the 55" goes blank even when the 65" is connected and not turned on. Even that worked for 6 or 7 months. It being connected but not on only became an issue only a couple months ago. The only thing that changed was updating the video drivers. And as far as the Vive, its never caused a conflict.

 

[Phaaze88]

Hmm, not what I suspected then.

Try drivers older than those couple months?

 

[Jim Weitz]

Problem has been solved! All I did was go into Windows Display Settings, and change the how to display monitors, Duplicate,

Hmm, not what I suspected then.

Try drivers older than those couple months?

Yes, I neglected to mention I had the current drivers installed. I didn't think to roll them back though. But, good news. I have solved the problem. I started the 65" and checked the windows settings to make sure it was running at the same resolution. While was in there I changed how the monitors should be handled. changing from expand this display to duplicate displays. Then turned on the 55". Both were on at the same time. Then changed it back to expand, and that did it. I haven't the slightest idea why, but it fixed the problem. Thanks for your ideas.