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Fatal1ty X399 IOMMU groups

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=7723
Printed Date: 19 Jul 2025 at 6:58am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com


Topic: Fatal1ty X399 IOMMU groups
Posted By: Friis
Subject: Fatal1ty X399 IOMMU groups
Date Posted: 18 Feb 2018 at 10:19pm
" rel="nofollow - Hi

I noticed this very bad IOMMU group:
IOMMU Group 11 01:00.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Device [1022:43ba] (rev 02)
IOMMU Group 11 01:00.1 SATA controller [0106]: Advanced Micro Devices, Inc. [AMD] Device [1022:43b6] (rev 02)
IOMMU Group 11 01:00.2 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Device [1022:43b1] (rev 02)
IOMMU Group 11 02:00.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port [1022:43b4] (rev 02)
IOMMU Group 11 02:04.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port [1022:43b4] (rev 02)
IOMMU Group 11 02:05.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port [1022:43b4] (rev 02)
IOMMU Group 11 02:06.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port [1022:43b4] (rev 02)
IOMMU Group 11 02:07.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port [1022:43b4] (rev 02)
IOMMU Group 11 03:00.0 Ethernet controller [0200]: Aquantia Corp. AQC107 NBase-T/IEEE 802.3bz Ethernet Controller [AQtion] [1d6a:d107] (rev 02)
IOMMU Group 11 04:00.0 Ethernet controller [0200]: Intel Corporation I211 Gigabit Network Connection [8086:1539] (rev 03)
IOMMU Group 11 05:00.0 Network controller [0280]: Intel Corporation Device [8086:24fb] (rev 10)
IOMMU Group 11 06:00.0 Ethernet controller [0200]: Intel Corporation I211 Gigabit Network Connection [8086:1539] (rev 03)

Anyway to fix? split them up with a UEFI update?



Replies:
Posted By: MisterJ
Date Posted: 19 Feb 2018 at 12:18am
Friis, I know almost nothing about IOMMU and am aware of no one here who is really knowledgeable.  I recommend you open an AMD support ticket and ask them.  Good luck and enjoy, John.

EDIT: Google gets lots of hits on searching
iommu groups in AMD Ryzen



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