Unable to Run a resolution higher than 1080p on My RTX 4090 Multi monitor Setup.

[Sihfty]

Hi all

Looking for some Technical assistance please.

I purchased a Zotac 4090 last week and I’m having issues Changing the resolution to higher than 1080p while using a multiple monitor setup.

I have 3 Monitors and one of them is a 4k Samsung odyssey ( the middle one and used for gaming). If any of my other monitors are plugged into the 4090 graphics card and I try to either change the resolution higher than 1080p in windows or in game, my PC restarts and reverts back to 1080p.

What I have tried:

• Brand new 1200W power supply with a 12VHPWR connection, Didn’t work
• Latest Nvidia drivers and tried Rolling back to older ones as well but I got the same issue
• Different graphics card. My previous Zotac 3090 did not have this issue
• I have the Latest Windows 11 updates
• Updated the Drivers on my Monitor, didn’t work

Only way I can play Games in 4k or up the resolution above 1080p is to unplug my two other 1080p monitors and just run just the one.

I have tried lot's of googling and I haven't found anything that has solved it so far. Most people have suggested to others that it might be a PSU issue. This is why I bought a new one, even though my previous was a Corsair 1000w.


Any assistance would be much appreciated.


Regards



Craig

 

[TOW]

What happens if you only have 2 monitors plugged in (the samsung + 1 other)?
Are they all using Displayport?

I've had some funkyness in the past with certain GPU manufacturers where the displayport output doesn't like running over 3 outputs simultaneously... can you try HDMI to 1 of the smaller monitors?

 

[Sihfty]

Thanks for the Reply.
I have unplugged 1 and I can adjust now to 4k. So I guess it's only with 3 that the issue starts. They are all Display port 144hz, I could try the 3rd on HDMI I guess. My previous Zotac 3090 didnt have any issues. Strange the Zotac 4090 does .

 

[Freddie1980]

Maybe first try it with just two monitors and see if you change resolutions and try plugging your cable into different outputs on the card.

 

[aoaaron]

This is worrying, I'm buying a 4090 ASUS TUF specially for triple monitor. Will hold on for a bit.

 

[sparkymark75]

I’m assuming the monitors are all directly plugged into the GPU? None of them are daisy chained?

 

[scubes]

I can't find any cards anywhere .

 

[Bluecube]

I can't find any cards anywhere .

WH Smith have a nice selection

 

[Sihfty]

So I have all 3 Monitors Running now with my Primary at 4k Resolution. I had to use a HDMI cable for my 3rd monitor instead of Display port for it to work. Annoying really, but at least it's running how I wanted it.

 

[jmiller82391]

I'm having the exact same issue,4090 Strix with Samsung 4k as center monitor. 2 others one on each side AOC 2k. I've had it running just fine for about 6 months now all of sudden it crashes when loading up unless I unplug the others.