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Two SLI GPUs - when I plug my monitor into the second card, there is no signal on boot but only in windows

sjain
By sjain
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Motherboard - Asus X99-A

 

GPUs - Zotac GTX 980Ti AMP! (2 of those in SLI)

 

Monitor - Acer S277HK

 

Cable - DisplayPort 1.2

 

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Hey everyone,

 

So the issue is in the title. I have two graphics cards installed in SLI, and one 4K monitor.

 

When I have my monitor plugged into the first GPU on the top, I get the normal monitor signal on boot, with the manufacturer logo, the text on how to enter BIOS, then the windows boot screen.

 

However, when I plug my monitor into the second GPU on the bottom (which I do because I want that as my primary GPU, and I do not want to re-arrange the GPUs) there is no monitor signal on boot - the manufacturer logo, the text on how to enter BIOS, then the windows boot screen are NOT DISPLAYED.

 

I have already tried clean installing my graphics drivers with DDU and reseating the graphics cards. any ideas as to what could be causing this?

 

its especially annoying because when my monitor loses signal, it dies completely, and you must unplug it from the wall, wait a few minutes, then plug it in again for it to work.

 

all help appreciated, thanks!

i7 5820K @ 4.1GHz • Zotac GTX 980Ti 2-way SLI • Full PC Specs

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Just now, VegetableStu said:

correct me if I'm wrong, but the POST and BIOS screen only displays on the primary GPU o_o (which would be your first GPU)

yes that is correct. btw, u reminded me. the little LED showing error codes and the tiny speaker which beeps for error codes, they are all normal, not showing any errors.

i7 5820K @ 4.1GHz • Zotac GTX 980Ti 2-way SLI • Full PC Specs

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4 minutes ago, sjain said:

when I plug my monitor into the second GPU on the bottom (which I do because I want that as my primary GPU, and I do not want to re-arrange the GPUs) there is no monitor signal on boot

Yeah, everything is as it should be.

The second GPU is only there in a support mode.

8 minutes ago, sjain said:

and I do not want to re-arrange the GPUs

Just re-arrange the GPUs.

 

 

 

 

 

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Just now, wONKEyeYEs said:

Yeah, everything is as it should be.

The second GPU is only there in a support mode.

Just re-arrange the GPUs.

wow, i didn't know that. so the PCI slot a GPU is in can seriously affect if you see the boot screen or not... thats crazy. Guess I'll just rearrange em then

i7 5820K @ 4.1GHz • Zotac GTX 980Ti 2-way SLI • Full PC Specs

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4 minutes ago, sjain said:

so the PCI slot a GPU is in can seriously affect if you see the boot screen or not...

yeah , hence why the manual says where the primary gpu goes. 

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1 minute ago, emosun said:

yeah , hence why the manual says where the primary gpu goes. 

lol sorry

i7 5820K @ 4.1GHz • Zotac GTX 980Ti 2-way SLI • Full PC Specs

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38 minutes ago, emosun said:

yeah , hence why the manual says where the primary gpu goes. 

alright, now there is no signal when i plug my monitor into my top primary gpu. wtf is happening. any ideas on how to fix this? btw i havent swapped the gpu pci slots yet

i7 5820K @ 4.1GHz • Zotac GTX 980Ti 2-way SLI • Full PC Specs

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1 minute ago, sjain said:

alright, now there is no signal when i plug my monitor into my top primary gpu. wtf is happening. any ideas on how to fix this? btw i havent swapped the gpu pci slots yet

are you just hotswapping the plug back and forth or are you actually taking the time to turn of the machine and then move the monitor cable.

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