XCP-ng
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Register
    • Login

    Intel iGPU passthough

    Scheduled Pinned Locked Moved Hardware
    39 Posts 10 Posters 9.1k Views 11 Watching
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • tjkreidlT Offline
      tjkreidl Ambassador @bullerwins
      last edited by

      @bullerwins Why would the driver have to be world writable (permissions 777) which seems like a security risk unless the /dev directory itself isn't. But still, a writable driver area seems very strange.

      X 1 Reply Last reply Reply Quote 0
      • X Offline
        xerxist @tjkreidl
        last edited by xerxist

        @tjkreidl

        It was to rule out any permission problems.
        But it seems more on the iommu side of things where it goes wrong.
        I’ve just tried the same on proxmox and it works right away. (Well not right away, like you need to do some grub adjustments and load modules) Not sure 🤔 what I can do to fix it. Does the xcp ng kernel take these iommu grub settings too?

        GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on iommu=pt"

        and these modules

        vfio
        vfio_iommu_type1
        vfio_pci
        vfio_virqfd

        tjkreidlT 1 Reply Last reply Reply Quote 0
        • tjkreidlT Offline
          tjkreidl Ambassador @xerxist
          last edited by

          @xerxist I honestly do not know, but it seems it cannot hurt to try.

          X 1 Reply Last reply Reply Quote 0
          • X Offline
            xerxist @tjkreidl
            last edited by xerxist

            Giving this another try 🙂

            @tjkreidl

            I couldn't find those modules so this is probably not something in xcp-ng.

            @bullerwins

            Is your vm running in EFI or BIOS?

            X bullerwinsB 2 Replies Last reply Reply Quote 0
            • X Offline
              xerxist @xerxist
              last edited by xerxist

              Got it working !!!!! 🙂

              Changed the VM from UEFI to BIOS and it started working.

              55120676-0c12-46cb-bdb3-7a986113f5c1-image.png

              Still though why would it need it be BIOS instead of UEFI

              Need to do some more testing as I also disabled something in the BIOS of the NUC11 for ASPM to so I'll bring up another VM with UEFI and test it again.

              tjkreidlT 1 Reply Last reply Reply Quote 0
              • tjkreidlT Offline
                tjkreidl Ambassador @xerxist
                last edited by

                @xerxist Good news! Some boot mechanisms will work one way or the other, or in some cases, even either one of them.
                It's also important to keep the BIOS up-to-date.

                X 1 Reply Last reply Reply Quote 0
                • X Offline
                  xerxist @tjkreidl
                  last edited by

                  @tjkreidl

                  Strange it works on UEFI too now.
                  Only thing that changed is "ASPM off" in the BIOS of the NUC.
                  Need to try that too on the NUC 13.

                  X 1 Reply Last reply Reply Quote 0
                  • X Offline
                    xerxist @xerxist
                    last edited by

                    NUC13 is still a no go with ASPM turned off.

                    Not sure if the kernel needs to recognize it as it doesn't give me the type like on the NUC11

                    4e3231e4-61e9-4101-abbb-ae2f90fdbd2f-image.png

                    But the NUC11 is confirmed working fine BIOS or UEFI

                    1 Reply Last reply Reply Quote 0
                    • bullerwinsB Offline
                      bullerwins @xerxist
                      last edited by

                      @xerxist in BIOS mode, i would say it was the default for my ubuntu VM

                      X 1 Reply Last reply Reply Quote 0
                      • X Offline
                        xerxist @bullerwins
                        last edited by

                        @bullerwins

                        Seems you would need at least Kernel > 5.15 for this to work on the NUC 12-13.
                        Not sure what got implemented/fixed there but it would need to be back ported for this to work.

                        bullerwinsB 1 Reply Last reply Reply Quote 0
                        • bullerwinsB Offline
                          bullerwins @xerxist
                          last edited by

                          @xerxist my ubuntu 22.04 install came with kernel 5.15, i have it updated regularly but it doens't update the kernel it seems. But newer fresh installs of ubuntu 22.04 install a newer kernel. I'll check out if the kernel needs to be manually updated

                          X 1 Reply Last reply Reply Quote 0
                          • X Offline
                            xerxist @bullerwins
                            last edited by xerxist

                            @bullerwins

                            Not in the VM itself.
                            I even went to kernel 6.6 and try it in there, all give the same issue.

                            Something on the hypervisor side in the kernel I meant. This is 4.x something with allot of backports.

                            I'll probably just wait a wile before moving full XCP-NG.
                            But its a very nice system 👍

                            bullerwinsB 1 Reply Last reply Reply Quote 0
                            • bullerwinsB Offline
                              bullerwins @xerxist
                              last edited by

                              @xerxist have you tried with the 8.3 beta of XCP-ng? I believe it's got a newer kernel maybe?

                              X 1 Reply Last reply Reply Quote 0
                              • X Offline
                                xerxist @bullerwins
                                last edited by

                                @bullerwins

                                Yes I'm running 8.3 Beta

                                1 Reply Last reply Reply Quote 0
                                • H Offline
                                  hawkpro
                                  last edited by

                                  @bullerwins @xerxist

                                  Is this just the mediated (gvt-g?) device passthrough, so the XCP side/server maintains video but a VM can make use of the resources as well?

                                  I am very interested in this (plex, frigate type use) as a stepping stone away from Proxmox.

                                  Thanks

                                  F 1 Reply Last reply Reply Quote 0
                                  • F Offline
                                    flakpyro @hawkpro
                                    last edited by

                                    In my testing of this, iGPU passthru works fine in Linux but in Windows the device will show an error in the device manager, disable/enabling the drive in the device manager will allow it to work, until next reboot.

                                    1 Reply Last reply Reply Quote 0
                                    • C Offline
                                      CJ
                                      last edited by

                                      @bullerwins @xerxist @flakpyro

                                      What are you using for display output on the host since you're passing the iGPU to the VM?

                                      F X 2 Replies Last reply Reply Quote 0
                                      • F Offline
                                        flakpyro @CJ
                                        last edited by

                                        @CJ Im running server grade hardware that has remote lights out management with iKVM support. Otherwise yeah you would lose access to the display output.

                                        1 Reply Last reply Reply Quote 0
                                        • X Offline
                                          xerxist @CJ
                                          last edited by

                                          @CJ

                                          No output just need the Intel quick sync.

                                          C 1 Reply Last reply Reply Quote 0
                                          • C Offline
                                            CJ @xerxist
                                            last edited by

                                            @xerxist Yes, QS for the VM but there are times when having a local display of the console comes in handy. That's why I haven't done mine.

                                            1 Reply Last reply Reply Quote 0
                                            • First post
                                              Last post