AB350 Pro4 BIOS Screen on Second GPU?
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=5735
Printed Date: 24 Dec 2024 at 9:21am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: AB350 Pro4 BIOS Screen on Second GPU?
Posted By: jstefanop
Subject: AB350 Pro4 BIOS Screen on Second GPU?
Date Posted: 29 Jul 2017 at 7:34am
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" rel="nofollow - Hi, I have the AB350 Pro 4 Mobo, and whenever I plug in second GPU, the BIOS screen shows up on that GPU instead of the primary. I don't see any settings to select which slot UEFI BIOS is output on, but its annoying thats its not aways on the primary GPU. Is there a fix planned for this?
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Replies:
Posted By: parsec
Date Posted: 29 Jul 2017 at 10:41am
The video output that is used in the UEFI/BIOS is not controlled by a setting in the UEFI/BIOS. How or why is one GPU designated as primary, and another as secondary? Simply by the PCIe slot being used? In a PC with an iGPU and discrete GPU, which one is, or should be, the Primary? Any monitor in a multi-monitor system can be selected as the Primary in Windows, and until we select one, which one becomes the default Primary monitor? What happens if you have two monitors connected to one GPU? Which video output should be used as the Primary? Not as straightforward a situation as we might think. It's somewhat of a mystery to me which video card or video output is selected for the UEFI/BIOS UI, but it is likely related to the VBIOS in the GPUs. ------------- http://valid.x86.fr/48rujh" rel="nofollow"> 
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jstefanop wrote:Posted By: jstefanop
Date Posted: 31 Jul 2017 at 3:03am
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Right, which is why most BIOSes have a selection on where to output initial video. ASROCK BIOS has no options at all. |