Can I Use My Motherboards HDMI Output If I Ran Out Of Outputs On My Gpu

[zetorminator]

Today, I got a new monitor and the first thing I did was unplug the old monitor’s HDMI cable from my GPU and plug it into the motherboard to make room for the new monitor. However, when I turned on my computer, the old screen displayed "No Signal.

[Average Nerd]

4 minutes ago, zetorminator said:

Today, I got a new monitor and the first thing I did was unplug the old monitor’s HDMI cable from my GPU and plug it into the motherboard to make room for the new monitor. However, when I turned on my computer, the old screen displayed "No Signal.

What CPU do you have? Not all CPUs have integrated graphics, which are required for mobo display outputs to work.

[zetorminator]

well my cpu is a ryzen 3600 and it does not have integrated graphics to my knowledge

[Average Nerd]

Just now, zetorminator said:

well my cpu is a ryzen 3600 and it does not have integrated graphics to my knowledge

 

There's your problem then.

 

[zetorminator]

Thanks I will buy a DP cable then

 

[TudorF]

You already got your answer, but I think it wouldn't work even if you had iGPU.

I know I tried with my setup and it didn't work. I tried having graphics from the CPU on my 2nd monitor and from my GPU on my main.

And apparently this doesn't work, or maybe not with my mobo. It seems you can only choose between one or the other at a time. You have to go in the BIOS of the mobo and switch something, forgot which, and then the mobo will output graphics only on a certain channel.

Not sure if this is specific for mobos or in general.

[TudorF]

Also I think this wouldn't work because of variable graphics capabilities between the integrated on CPU one and the video card one.

Like the iGPU could drive a certain refresh rate, while the GPU another. Windows is not able to work well with such a setting, from my experience. For example browsers will just use the frequency of the main display and apply that to all other monitors.

[TudorF]

Hm, internet says this works, but I know I tested once and there were issues, so I stopped using dual graphics. Maybe because it's not very efficient in terms of power use.

[PDifolco]

I have a 7000 Ryzen, and I was baffled to see that if I (mis)plug the video output to the mobo the dGPU still works, as I was able to play games with normal performance (which is infintely better on my 7900XTX than the iGPU lol)

So maybe it may work as well if you decide to use both, but you need an iGPU that the 3600 hasn't...

[Windows7ge]

Unless something has changed with software in recent years there isn't a reason you can't use both your iGPU+dGPU at the same time but as explained yes your CPU must have the capability to drive the onboard display ports. It's been quite a long time since desktop motherboards had a graphics processor built into them.