[SOLVED] Proxmox VE 7 5.15.30-1-pve IOMMU not working

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Apr 13, 2022
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SOLVED (kinda): Bad motherboard

Fresh install Proxmox VE 7 and upgraded to kernel 5.15.30 and I find that my IOMMU grouping isn't available.

cat /etc/default/grub:
Code: 
GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on iommu=pt pcie_acs_override=downstream,multifunction video:vesafb:off video=efifb:off"

dmesg | grep -e DMAR -e IOMMU
Code: 
[    0.000000] Warning: PCIe ACS overrides enabled; This may allow non-IOMMU protected peer-to-peer DMA
[    0.266590] DMAR: IOMMU enabled

I clearly have the line intel_iommu=on and it says DMAR: IOMMU enabled but it doesn't show on PCI Device add screen.

1649831925750.png

I also get this error when starting the VM with PCI added:
1649831947620.png

I have also done update-grub && update-initramfs -u -k all plenty of times just to make sure that it has been done and still no dice. I also had this working back on VE 6.2 with the same setup except different motherboard and the IOMMU command should still work.
Any advice on how to fix this?
 
Last edited:
Did you add the four kernel modules to /etc/modules as shown in the wiki?
Please note that pcie_acs_override=downstream,multifunction makes the system lie about IOMMU groups, introduces a security issues and does not guarantee that passthrough will work (due to lying about the groups). Maybe first try to get IOMMU and passthrough working without it?
 
t.lamprecht said:
If you use ZFS as root filesystem you may need to do proxmox-boot-tool refresh instead.
https://pve.proxmox.com/pve-docs/chapter-sysadmin.html#sysboot_edit_kernel_cmdline

You can get the actually used kernel boot comandline with: cat /proc/cmdline
Click to expand...
Running that gives me:
Code: 
BOOT_IMAGE=/boot/vmlinuz-5.15.30-1-pve root=/dev/mapper/pve-root ro quiet intel_iommu=on iommu=pt pcie_acs_override=downstream,multifunction video:vesafb:off video=efifb:off
Yeah it seems to have updated just fine
 
t.lamprecht said:
With 5.15 you may now also need to add video:simplefb:off to avoid that the GPU is claimed by that new default driver
Click to expand...
I tried this too and it solved the GPU being used by Proxmox VE but it didn't solve the IOMMU problem.

EDIT: no it didn't forgot to plug HDMI back in
 
Last edited:
leesteken said:
Did you add the four kernel modules to /etc/modules as shown in the wiki?
Please note that pcie_acs_override=downstream,multifunction makes the system lie about IOMMU groups, introduces a security issues and does not guarantee that passthrough will work (due to lying about the groups). Maybe first try to get IOMMU and passthrough working without it?
Click to expand...

cat /etc/modules returns:
Code: 
# /etc/modules: kernel modules to load at boot time.
#
# This file contains the names of kernel modules that should be loaded
# at boot time, one per line. Lines beginning with "#" are ignored.
vfio
vfio_iommu_type1
vfio_pci
vfio_virqfd

I didn't know about the pcie_acs_override vulnerability before, will remove and update this post on how it goes.

Just removed it and tried it, didn't work
 
Last edited:
Despite the dmesg output: VT-d in your bios is explicitly enabled for sure?

What is your exact mainboard- and CPU-model?

Did you already try it with the default pve-5.13 kernel?

I am wondering how your IOMMU-groups actually look like (without the ACS override patch).
Can you please post the full output from the PVE-host in code-tags of:
Bash: 
for d in /sys/kernel/iommu_groups/*/devices/*; do n=${d#*/iommu_groups/*}; n=${n%%/*}; printf 'IOMMU group %s ' "$n"; lspci -nns "${d##*/}"; done
(Thanks to avw for the command!)
 
Neobin said:
Despite the dmesg output: VT-d in your bios is explicitly enabled for sure?

What is your exact mainboard- and CPU-model?

Did you already try it with the default pve-5.13 kernel?

I am wondering how your IOMMU-groups actually look like (without the ACS override patch).
Can you please post the full output from the PVE-host in code-tags of:
Bash: 
for d in /sys/kernel/iommu_groups/*/devices/*; do n=${d#*/iommu_groups/*}; n=${n%%/*}; printf 'IOMMU group %s ' "$n"; lspci -nns "${d##*/}"; done
(Thanks to avw for the command!)
Click to expand...
VT-d is on
CPU: 2x E5-4620v2
Motherboard: HUANANZHI X79 motherboard (Aliexpress haha)

Running with 5.13.19-6 doesn't work either

This is what it came out with:
Code: 
IOMMU group * 00:00.0 Host bridge [0600]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 DMI2 [8086:0e00] (rev 04)
00:01.0 PCI bridge [0604]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 PCI Express Root Port 1a [8086:0e02] (rev 04)
00:01.1 PCI bridge [0604]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 PCI Express Root Port 1b [8086:0e03] (rev 04)
00:02.0 PCI bridge [0604]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 PCI Express Root Port 2a [8086:0e04] (rev 04)
00:03.0 PCI bridge [0604]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 PCI Express Root Port 3a [8086:0e08] (rev 04)
00:05.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 VTd/Memory Map/Misc [8086:0e28] (rev 04)
00:05.2 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 IIO RAS [8086:0e2a] (rev 04)
00:05.4 PIC [0800]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 IOAPIC [8086:0e2c] (rev 04)
00:11.0 PCI bridge [0604]: Intel Corporation C600/X79 series chipset PCI Express Virtual Root Port [8086:1d3e] (rev 06)
00:1a.0 USB controller [0c03]: Intel Corporation C600/X79 series chipset USB2 Enhanced Host Controller #2 [8086:1d2d] (rev 06)
00:1b.0 Audio device [0403]: Intel Corporation C600/X79 series chipset High Definition Audio Controller [8086:1d20] (rev 06)
00:1c.0 PCI bridge [0604]: Intel Corporation C600/X79 series chipset PCI Express Root Port 1 [8086:1d10] (rev b6)
00:1c.2 PCI bridge [0604]: Intel Corporation C600/X79 series chipset PCI Express Root Port 3 [8086:1d14] (rev b6)
00:1c.3 PCI bridge [0604]: Intel Corporation C600/X79 series chipset PCI Express Root Port 4 [8086:1d16] (rev b6)
00:1c.5 PCI bridge [0604]: Intel Corporation C600/X79 series chipset PCI Express Root Port 6 [8086:1d1a] (rev b6)
00:1d.0 USB controller [0c03]: Intel Corporation C600/X79 series chipset USB2 Enhanced Host Controller #1 [8086:1d26] (rev 06)
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge [8086:244e] (rev a6)
00:1f.0 ISA bridge [0601]: Intel Corporation C600/X79 series chipset LPC Controller [8086:1d41] (rev 06)
00:1f.2 SATA controller [0106]: Intel Corporation C600/X79 series chipset 6-Port SATA AHCI Controller [8086:1d02] (rev 06)
00:1f.3 SMBus [0c05]: Intel Corporation C600/X79 series chipset SMBus Host Controller [8086:1d22] (rev 06)
01:00.0 Non-Volatile memory controller [0108]: SK hynix Device [1c5c:174a]
03:00.0 VGA compatible controller [0300]: NVIDIA Corporation GP104 [GeForce GTX 1070 Ti] [10de:1b82] (rev a1)
03:00.1 Audio device [0403]: NVIDIA Corporation GP104 High Definition Audio Controller [10de:10f0] (rev a1)
07:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 06)
08:00.0 USB controller [0c03]: VIA Technologies, Inc. VL805 USB 3.0 Host Controller [1106:3483] (rev 01)
09:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 06)
7f:08.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 QPI Link 0 [8086:0e80] (rev 04)
7f:09.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 QPI Link 1 [8086:0e90] (rev 04)
7f:0a.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Power Control Unit 0 [8086:0ec0] (rev 04)
7f:0a.1 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Power Control Unit 1 [8086:0ec1] (rev 04)
7f:0a.2 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Power Control Unit 2 [8086:0ec2] (rev 04)
7f:0a.3 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Power Control Unit 3 [8086:0ec3] (rev 04)
7f:0b.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 UBOX Registers [8086:0e1e] (rev 04)
7f:0b.3 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 UBOX Registers [8086:0e1f] (rev 04)
7f:0c.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Unicast Registers [8086:0ee0] (rev 04)
7f:0c.1 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Unicast Registers [8086:0ee2] (rev 04)
7f:0c.2 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Unicast Registers [8086:0ee4] (rev 04)
7f:0c.3 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Unicast Registers [8086:0ee6] (rev 04)
7f:0d.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Unicast Registers [8086:0ee1] (rev 04)
7f:0d.1 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Unicast Registers [8086:0ee3] (rev 04)
7f:0d.2 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Unicast Registers [8086:0ee5] (rev 04)
7f:0d.3 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Unicast Registers [8086:0ee7] (rev 04)
7f:0e.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Home Agent 0 [8086:0ea0] (rev 04)
7f:0e.1 Performance counters [1101]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Home Agent 0 [8086:0e30] (rev 04)
7f:0f.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 0 Target Address/Thermal Registers [8086:0ea8] (rev 04)
7f:0f.1 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 0 RAS Registers [8086:0e71] (rev 04)
7f:0f.2 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 0 Channel Target Address Decoder Registers [808... (rev 04)
7f:0f.3 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 0 Channel Target Address Decoder Registers [808... (rev 04)
7f:0f.4 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 0 Channel Target Address Decoder Registers [808... (rev 04)
7f:0f.5 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 0 Channel Target Address Decoder Registers [808... (rev 04)
7f:10.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 1 Channel 0-3 Thermal Control 0 [8086:0eb0] (rev 04)
7f:10.1 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 1 Channel 0-3 Thermal Control 1 [8086:0eb1] (rev 04)
7f:10.2 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 1 Channel 0-3 ERROR Registers 0 [8086:0eb2] (rev 04)
7f:10.3 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 1 Channel 0-3 ERROR Registers 1 [8086:0eb3] (rev 04)
7f:10.4 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 1 Channel 0-3 Thermal Control 2 [8086:0eb4] (rev 04)
7f:10.5 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 1 Channel 0-3 Thermal Control 3 [8086:0eb5] (rev 04)
7f:10.6 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 1 Channel 0-3 ERROR Registers 2 [8086:0eb6] (rev 04)
7f:10.7 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 1 Channel 0-3 ERROR Registers 3 [8086:0eb7] (rev 04)
7f:13.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 R2PCIe [8086:0e1d] (rev 04)
7f:13.1 Performance counters [1101]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 R2PCIe [8086:0e34] (rev 04)
7f:13.4 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 QPI Ring Registers [8086:0e81] (rev 04)
7f:13.5 Performance counters [1101]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 QPI Ring Performance Ring Monitoring [8086:0e36] (rev 04)
7f:16.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 System Address Decoder [8086:0ec8] (rev 04)
7f:16.1 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Broadcast Registers [8086:0ec9] (rev 04)
7f:16.2 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Broadcast Registers [8086:0eca] (rev 04)
80:03.0 PCI bridge [0604]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 PCI Express Root Port 3a [8086:0e08] (rev 04)
80:05.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 VTd/Memory Map/Misc [8086:0e28] (rev 04)
80:05.2 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 IIO RAS [8086:0e2a] (rev 04)
80:05.4 PIC [0800]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 IOAPIC [8086:0e2c] (rev 04)
81:00.0 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01)
81:00.1 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01)
81:00.2 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01)
81:00.3 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01)
ff:08.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 QPI Link 0 [8086:0e80] (rev 04)
ff:09.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 QPI Link 1 [8086:0e90] (rev 04)
ff:0a.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Power Control Unit 0 [8086:0ec0] (rev 04)
ff:0a.1 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Power Control Unit 1 [8086:0ec1] (rev 04)
ff:0a.2 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Power Control Unit 2 [8086:0ec2] (rev 04)
ff:0a.3 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Power Control Unit 3 [8086:0ec3] (rev 04)
ff:0b.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 UBOX Registers [8086:0e1e] (rev 04)
ff:0b.3 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 UBOX Registers [8086:0e1f] (rev 04)
ff:0c.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Unicast Registers [8086:0ee0] (rev 04)
ff:0c.1 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Unicast Registers [8086:0ee2] (rev 04)
ff:0c.2 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Unicast Registers [8086:0ee4] (rev 04)
ff:0c.3 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Unicast Registers [8086:0ee6] (rev 04)
ff:0d.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Unicast Registers [8086:0ee1] (rev 04)
ff:0d.1 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Unicast Registers [8086:0ee3] (rev 04)
ff:0d.2 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Unicast Registers [8086:0ee5] (rev 04)
ff:0d.3 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Unicast Registers [8086:0ee7] (rev 04)
ff:0e.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Home Agent 0 [8086:0ea0] (rev 04)
ff:0e.1 Performance counters [1101]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Home Agent 0 [8086:0e30] (rev 04)
ff:0f.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 0 Target Address/Thermal Registers [8086:0ea8] (rev 04)
ff:0f.1 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 0 RAS Registers [8086:0e71] (rev 04)
ff:0f.2 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 0 Channel Target Address Decoder Registers [808... (rev 04)
ff:0f.3 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 0 Channel Target Address Decoder Registers [808... (rev 04)
ff:0f.4 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 0 Channel Target Address Decoder Registers [808... (rev 04)
ff:0f.5 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 0 Channel Target Address Decoder Registers [808... (rev 04)
ff:10.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 1 Channel 0-3 Thermal Control 0 [8086:0eb0] (rev 04)
ff:10.1 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 1 Channel 0-3 Thermal Control 1 [8086:0eb1] (rev 04)
ff:10.2 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 1 Channel 0-3 ERROR Registers 0 [8086:0eb2] (rev 04)
ff:10.3 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 1 Channel 0-3 ERROR Registers 1 [8086:0eb3] (rev 04)
ff:10.4 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 1 Channel 0-3 Thermal Control 2 [8086:0eb4] (rev 04)
ff:10.5 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 1 Channel 0-3 Thermal Control 3 [8086:0eb5] (rev 04)
ff:10.6 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 1 Channel 0-3 ERROR Registers 2 [8086:0eb6] (rev 04)
ff:10.7 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Integrated Memory Controller 1 Channel 0-3 ERROR Registers 3 [8086:0eb7] (rev 04)
ff:13.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 R2PCIe [8086:0e1d] (rev 04)
ff:13.1 Performance counters [1101]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 R2PCIe [8086:0e34] (rev 04)
ff:13.4 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 QPI Ring Registers [8086:0e81] (rev 04)
ff:13.5 Performance counters [1101]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 QPI Ring Performance Ring Monitoring [8086:0e36] (rev 04)
ff:16.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 System Address Decoder [8086:0ec8] (rev 04)
ff:16.1 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Broadcast Registers [8086:0ec9] (rev 04)
ff:16.2 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 Broadcast Registers [8086:0eca] (rev 04)
 
Last edited:
As you can see in the output, there are actually no IOMMU-groups at all; at least they are not exposed to the OS.

I would start searching the web for experiences from others with this "special" mainboard regarding VT-d/IOMMU-groups and if they have it successfully running, on what bios version they are and so on.
You could try out different bios versions anyway. (If there are different versions at all.)
 
Neobin said:
As you can see in the output, there are actually no IOMMU-groups at all; at least they are not exposed to the OS.

I would start searching the web for experiences from others with this "special" mainboard regarding VT-d/IOMMU-groups and if they have it successfully running, on what bios version they are and so on.
You could try out different bios versions anyway. (If there are different versions at all.)
Click to expand...
Board came with 2 dead memory sticks anyway, looks like I am doing a refund and going back to my other x79 board... Thanks for your help
 
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