camwhaler

21 hours ago, High_Voltage said:

@camwhaler I think this should be possible, as the multiplexers are controlled from the PCH, and not from EC. Might have a look into that a bit later. However, why not consider modifying the hardware? Forcing that multiplexer into a desired state is a matter of desoldering a couple of resistors.

 

Edit: For example, removing RH161 and RH171 should force HDMI output to be permanently connected to Nvidia GPU.

Hm, that's an interesting idea, I'll probably end up trying that if other methods fail. As of right now, I'd prefer to not modify the hardware and see if it can be accomplished through software. Like maybe with a bios mod or possibly a DSDT patch  but I don't have any experience with the latter.

I'm not sure if this is even possible but, figured I'd ask. Is it possible to modify the bios in a way that controls the hardware MUX. One of the things I'm wanting to do is map one of the gpus to a particular display output. That way I could passthrough the gpu to a Virtual Machine and have an output physically connected to it. I found a youtube video of someone doing something like this on an Dell precision 7720 which has bios options for it. I am willing to pay if someone can help me with this.

3 minutes ago, Klem said:

Hi!

Create and send me your file bios backup. Then I will unlock all hidden advanced menus and settings in your bios. Then you can try to get what you need.

I have already flashed a modded bios but none of the advanced menus seem to accomplish what I'm trying to do. It might not be possible but I figured I'd ask anyways.

Hello Klem,

Is it possible to modify the bios in a way that controls the hardware MUX. One of the things I was wanting to do was map one of the gpus to a particular display output. That way I could passthrough the gpu to a Virtual Machine and have an output physically connected to it. I found a youtube video of someone doing something like this on an Dell precision 7720 which has bios options for it. I am willing to pay if you or someone else can help me with this.