1. F

    Another video pass-through question

    Hi. Very new to Proxmox and not a linux head. I'm trying to pass-through an Intel iGPU (P530). CPU and MSI motherboard both support VT-d and is enabled in the BIOS but it just has not worked. "No IOMMU detected. Please activate it." Read guides here...
  2. H

    [SOLVED] PCIE Passthrough. ( No IOMMU detected)

    I am new to Proxmox and am having some trouble setting up passthrough. I have made sure that Vt-d and all other settings are enabled in bios. I have edited the Grub file and reloaded and rebooted, but proxmox is still telling me that IOMMU is not enabled. So any help from someone more...
  3. L

    Epyc, Intel x710 and server 2022?

    does anyone have success stories of passing a intel x710 virtual function to a win server 2022 instance? I was playing on a very old e7v3 intel system and x540 and can get vfs passed to linux guests but win 10 guest shows an unidentified device when i had a personal system i swear i got the...
  4. W

    [SOLVED] Keine IOMMU Groups für PCI Geräte

    Guten Tag, zu erst ein paar Infos: Zum System: ASrock b450m pro 4 R2.0 AMD Ryzen 5 5600G 32 GB RAM Proxmox 8.1.10 root@pve-02:~# dmesg | grep -e DMAR -e IOMMU [ 0.379933] pci 0000:00:00.2: AMD-Vi: IOMMU performance counters supported [ 0.381426] pci 0000:00:00.2: AMD-Vi: Found IOMMU cap...
  5. V

    Trying to passthrough lsi card and iommu group shows -1

    I am trying to passthrough my lsi PCIe card to openmedia vault and when I add pcie hardware it says no IOMMU detected. The card is detected in lspci, I added `intel_iommu=on iommu=pt` to the kernel and `vfio vfio_iommu_type1 vfio_pci vfio_virqfd1` to /etc/modules and refreshed initramfs...
  6. B

    [SOLVED] Proxmox IUMMO funktioniert nicht

    Moin Moin, ich habe sogut wie alles gemacht, was ich irgendwie finden konnte. Jedoch funktioniert bei mir kein IOMMU, ich möchte gerne meine AX210 WIFI Card zur PFSense durchreichen, wobei die meldung kommt "No IOMMU detected, please activate it.See Documentation for further information." Das...
  7. C

    DMAR: IOMMU enabled / Error: cannot prepare PCI pass-through, IOMMU not present

    Hi, i am trying to understund why the system behave this way to find out where the issue lays, system specifications and and steps taken in attempt to fix it bellow: CPU: G4400T / I5 6500 (tried both) RAM: 16GB (2x 8GB) Motherboard: ASRock H110M-DGS R3.0 (BIOS: P7.4) NetworkPVE: RTL8111 GbE...
  8. F

    Kernel panic when IOMMU is enabled

    Hi, I have a VM host with an ASRock Rack B550D4-4L mainboard with AMD Ryzen 7 PRO 5750G (with Radeon Graphics) CPU running a current PVE 8.1 with Kernel 6.5. # pveversion pve-manager/8.1.4/ec5affc9e41f1d79 (running kernel: 6.5.13-1-pve) The system runs very stable overall, but it only boots...
  9. K

    IOMMU groups - ACS patch

    Hi, I have enabled IOMMU: intel_iommu=on iommu=pt pcie_acs_override=downstream,multifunction Tried with "downstream","multifunction" and "downstream,multifunction" Added necessary module options echo "options vfio_iommu_type1 allow_unsafe_interrupts=1" >...
  10. K


    Hello I have a problem with PCI Passthrough. my virtual machine gets such an error: () kvm: -device vfio pci,host=0000:03:00.0,id=hostpci0,bus=pci.0,addr=0x10: vfio 0000:03:00.0: failed to setup container for group 17: Failed to set iommu for container: Operation not permitted TASK ERROR: start...
  11. I

    IOMMU: difference between "/etc/kernel/cmdline" and "/etc/default/grub"

    I had a roadblock today and figured it out, but I want to understand the difference. I configured now three systems with iommu and pci-passthrough. Everytime appending intel_iommu=on at /etc/kernel/cmdline was enough. Those were on a: ASUS Prime Z590-P MSI MEG Z590 ACE ASUS B450M-K II MSI MEG...
  12. D


    That's a lot of words! What I'm investigating if it's possible to pass an AMD Ryzen 5700U iGPU (sorry, it's a Mini PC with dual HDMI) to an LXC guest (Flatcar LXC), which in turn holds Plex. While the above is critical for video hardware encoding, the main idea is for GPU Split Passthrough...
  13. W

    Passthrough Hardware Transcoding - Visible but not being utilised

    Goal - Have hardware transcoding on a virtual machine using a GTX 1070 TI as the GPU. Achieved so far from following I have gotten so far to the point now where running nvidia-smi will show me Picture 1 in the VM. I can't get this...
  14. N

    [SOLVED] Can't identify two identical nvme drives for PCIe passthrough

    I've got two identical NVMe drives (same model, same capacity) in my system. One drive I use for PVE storage. The other I'd like to passthrough to a vm. When I go into the settings of the vm, Idk which drive to select, because Idk which one is which. On the disks overview on the node, the...
  15. G

    No IOMMU detected, please activate it. Asus P7P55D-E EVO

    hello all, trying to activate IOMMU, to passthrough a pci card to a host. upgraded to Virtual Environment 8.1.4 my motherboard: dmidecode -t 2 # dmidecode 3.4 Getting SMBIOS data from sysfs. SMBIOS 2.6 present. Handle 0x0002, DMI type 2, 15 bytes Base Board Information Manufacturer...
  16. A

    PCIe passthrough

    Hi, I changed motherboard and CPU recently on my server and a lot broke. But finally, when I got proxmox to boot and got access to the web interface, I have to passthrough my PCIe devices again. The problem I am running into is that when following the guide PCI Passthrough, when I run; dmesg |...
  17. D

    Issues with IOMMU (Proxmox 8.0.3, Error code 43 in VM)

    Server Specs: Model: Dell PowerEdge T320 CPU: Intel(R) Xeon(R) CPU E5-2420 v2 @ 2.20GHz RAM: 192GB DDR3 ECC Memory GPU: AMD Radeon™ PRO WX 3100 HDD’s: 2 600GB SAS HDD’s, 6 2TB SAS HDD’s (Various Brands) PCI(e) Cards: Dell Perc H310 RAID card, (Unbranded) Dual M.2 to PCI adapter (Contains 1...
  18. S

    IOMMU Not enabling as expected.

    Hi all, First off, I just started trying to get GPU passthrough working for the first time. I'm a noob and gradually learning this stuff, so thank you ahead of time for your patience and help with getting me through this Not far on the road, I stumbled into a roadblock, IOMMU isn't enabling as...
  19. C

    Request for tutorial of passing through wifi pci device

    I'm composing something on my blog. Was wondering if there's anything I can crib notes from. I'll do lspci and put in the bits about blocking the kernel module from loading using /etc/modprobe.d/blacklist.conf ; anything else we should include?
  20. O

    PCIe Passthrough & IOMMU issues

    Hi all, first off, I'm a noob and gradually learning this stuff, so thank you ahead of time for your patience and help with getting me through this Secondly, I promise I've spent days researching the answers myself before creating this thread. I've followed the guides, the official docs and I...


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