1. R

    ThunderBolt GPU keeps disconnecting every 16 seconds!

    I have a AMD RX550 GPU in a Thunderbolt dock that is tested to work perfect with my MinisForum MS-01 (Intel 12900H) under W11 on bare metal. I have a Erying 13900H D5 motherboard with 64Gb RAM that's working flawless with ProxMox the past 3 months. I have upgraded my ProxMox-VE to the latest...
  2. C

    Sudden occurrence of GPU pass-through to the virtual machine causing the host to crash

    Good morning/afternoon/evening everyone, I have a problem that has been bothering me for a week. I have been using Proxmox for two years and have been continuously adding hardware. The CPU used is AMD 5600G, the motherboard is Maxsun B550M, two 2.5-inch SSDs are used to form a ZFS mirror as the...
  3. A

    Host lost iGPU & Network after guest reboots

    CPU: Intel i7-7700 GPU: Intel Graphics HD 630 & NVIDIA Geforce GT 730 Motherboard: ASUS Prime Z270-P Disk: WD SN750 & SKHynix PC711 I set IOMMU on and passed-through GT 730, NVMe PC711 and 3 USB Ports to a Windows 10 LTSC guest machine. Whenever I reboot my guest machine, the iGPU of host will...
  4. F

    [SOLVED] Kernel 5.19+: USB2 trouble

    Hello, first time posting here after a few years of getting valuable information from this forum. After updating my old hardware (MSI 970A-G45) to PVE8.2 my Coral TPU stopped working. I've narrowed the problem down to USB2 not working from kernel 6.1.10-1-pve onwards [EDIT: 5.19.7-1-pve...
  5. I

    Sandy Bridge GPU Passthrough

    So I recently picked up a couple old Optiplex 790’s, and I was wondering if they support GPU pass through. I have fiddled around with one of them (Xeon E3-1225v2) and wasn’t able to get pass through working, IOMMU would be enabled but no matter what I tried I was getting memory address errors in...
  6. T

    [SOLVED] iGPU blocked by VFIO

    Hello, I have this specs: CPU: i5-14500 iGPU: UHD Graphics 770 GPU: NVIDIA Geforce GTX 1660 Super Proxmox: ver.8.1.10 ----- - I enabled IOMMU as described HERE - I need fully passthrough my GPU NVIDIA to one of my VM. It works - I lost in PVE access to /dev/dri/D128 Now, I cannot use VirtGL or...
  7. D

    Enabling IOMMU in Proxmox VE 8 Kernel

    Do we still need to manually enable IOMMU in the kernel for Proxmox VE 8 by setting intel_iommu=on and intel_iommu=pt?
  8. 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...
  9. 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...
  10. 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...
  11. 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...
  12. 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...
  13. 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...
  14. 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...
  15. 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...
  16. 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" >...
  17. 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...
  18. 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...
  19. 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...
  20. 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...


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