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    XCP-ng GPU Passthrough - No GPU found

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    • olivierlambertO Offline
      olivierlambert Vates 🪐 Co-Founder CEO
      last edited by

      Okay good to know 🙂 I had the hope that a serial console would be enough. I'll take a look if I can have any luck.

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      • M Offline
        misterpc23
        last edited by

        So when will PCI passthrough be available through the GUI for lazy people such as myself? I don't mind dedicating a whole card per VM (Prefer it actually) but am highly hesitant to use the console. Thank you for all of the hard work, XCP-ng is awesome!

        borzelB 1 Reply Last reply Reply Quote 0
        • borzelB Offline
          borzel XCP-ng Center Team @misterpc23
          last edited by

          @misterpc23 sometimes even lazy people have to go to the cli 😉

          M 1 Reply Last reply Reply Quote 0
          • M Offline
            misterpc23 @borzel
            last edited by

            @borzel It wasn't scary at all! Only downside is my gpu hasn't showed up so I'm thinking it is not supported (R370). Where could I find a list of GPU's that will work with PCI passthrough with XCP-NG? Thank you for any help 🙂

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            • I Offline
              imtrobin
              last edited by

              KVM is quite easy to spoof the VM so the nvidia drivers work. Is it possible to do easily for xcp?

              https://lists.xenproject.org/archives/html/xen-devel/2016-07/msg01713.html

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              • olivierlambertO Offline
                olivierlambert Vates 🪐 Co-Founder CEO
                last edited by

                You can pass the entire GPU if you like, it's no big deal. vGPU is another story.

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                • I Offline
                  imtrobin
                  last edited by

                  I'm talking about GPU Passthrough, not vGPU. The GPU is passthrough fine but the nvidia driver results in code 43, meaning the driver detected it is running in a VM.

                  KVM bypass this by spoofing the VM, and it works, so can XCP do similar?

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                  • olivierlambertO Offline
                    olivierlambert Vates 🪐 Co-Founder CEO
                    last edited by

                    IDK what it means to spoofing the VM. If you can tell what's needed exactly, maybe we could do something 🙂

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                    • I Offline
                      imtrobin
                      last edited by

                      In KVM, I need to do these

                      1. turn on cpu hidden state

                      https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF#"Error_43:_Driver_failed_to_load"_on_Nvidia_GPUs_passed_to_Windows_VMs

                      1. Assign the gpu to vfio directly (I guess we may not need to do this here)

                      2. Blacklist the nvidia drivers like this

                      https://techblog.jeppson.org/2018/03/windows-vm-gtx-1070-gpu-passthrough-proxmox-5/

                      https://forum.proxmox.com/threads/gpu-passthrough-tutorial-reference.34303/

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                      • I Offline
                        imtrobin
                        last edited by

                        Hi, so some people have been able to do it

                        https://gridforums.nvidia.com/default/topic/9108/#

                        https://gridforums.nvidia.com/default/topic/8934/#

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                        • P Offline
                          Pejcik
                          last edited by Pejcik

                          Hello,

                          My idea was to passthrough GPU to specific VM. According to many informations from the Internet, I'm doing this like that:

                          1. /opt/xensource/libexec/xen-cmdline --set-dom0 "xen-pciback.hide=(03:00.0)(03:00.1)"
                            but still even after reboot I see it on lspci
                          2. xe vm-param-set other-config:pci=0/0000:03:00.0, 0/0000:03:00.1 uuid=c41704d0-a1f2-6bc1-fe2e-adc26697e636
                            for old Nvidia 8600 and GT430 it doesn't work - Windows VM see that device, drivers are installed but all the time I have error 43 and this device is stopped
                            for Radeon 7870 it work ok

                          Audio and USB is working with that metod also.

                          Is this connected with Vbios of this GPU's ?

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                          • L Offline
                            linhnb
                            last edited by

                            Finally, we have GPU passthrough in the GUI,
                            But it is not working...
                            My setup:
                            CPU 2700x
                            MOBO: x470 Taichi
                            RAM: 32GB
                            GPU: Rx580 sapphire Nitro 4GB

                            Please, I did use CLI and GUI, no work.
                            Cannot see it in Windows.
                            acc4199c-4b96-4306-b765-e6492841f099-image.png ![alt text](image url)

                            J 1 Reply Last reply Reply Quote 0
                            • A Offline
                              anthonyh
                              last edited by

                              Ironically, I am trying to do this as well. I put a second graphics card in a host (NVIDIA NVS 510) and made sure the appropriate virtalization settings were enabled in the BIOS. Running up to date XCP-ng 8.0 (yum update as of yesterday afternoon). I can assign the GPU to the Windows Server 2016 guest in XCP-ng Center, and the NVIDIA drivers seem to install fine, but Device Manager reports the following:

                              85c90cd3-11ae-49a3-ac29-ff5a07488c81-image.png

                              What's also interesting is even though it warns that you must be able to access the VM remotely as there will be no local console, there is still a local console. I don't know if this means anything.

                              Any ideas?

                              J L 2 Replies Last reply Reply Quote 0
                              • J Offline
                                jmccoy555 @anthonyh
                                last edited by

                                @anthonyh Google code 43 NVIDIA...... Basic translation is we want to stop you doing this with a consumer card in a VM. There are solutions I believe.

                                A 1 Reply Last reply Reply Quote 0
                                • olivierlambertO Offline
                                  olivierlambert Vates 🪐 Co-Founder CEO
                                  last edited by

                                  Yes, using Nvidia card supporting GPU passthrough 😛

                                  Otherwise, there's "border line" patches on Windows drivers available on GitHub, but we won't find those for you 😉

                                  1 Reply Last reply Reply Quote 1
                                  • J Offline
                                    jmccoy555 @linhnb
                                    last edited by

                                    @linhnb don't think you can use the GUI for GPUs, only vGPUs.

                                    RX580 does work, just follow the PCI passthrough guide.

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                                    • olivierlambertO Offline
                                      olivierlambert Vates 🪐 Co-Founder CEO
                                      last edited by

                                      AMD cards are indeed far better for both vGPU and GPU passthrough: it just works.

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                                      • J Offline
                                        jmccoy555
                                        last edited by

                                        If only they made a LP vGPU card.... Looks like a WX4100 will have to do.

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                                        • L Offline
                                          linhnb @anthonyh
                                          last edited by

                                          @anthonyh yeah, I also got this note in version 8.1. I just don't know why. But my VM can't see Rx580, that's the problem

                                          @olivierlambert man, please, I got problem right here with AMD GPU. Please help.

                                          @jmccoy555 You can use the GUI. I checked, the code changes as if you do make it in CLI. please check the newest version 8.1
                                          b8929c93-4fea-4225-812e-6dbf288f2b5f-image.png
                                          6e41aa83-4789-4da5-9ecf-2a77e2ffce6d-image.png

                                          olivierlambertO J 2 Replies Last reply Reply Quote 0
                                          • A Offline
                                            anthonyh @jmccoy555
                                            last edited by

                                            @jmccoy555 said in XCP-ng GPU Passthrough - No GPU found:

                                            @anthonyh Google code 43 NVIDIA...... Basic translation is we want to stop you doing this with a consumer card in a VM. There are solutions I believe.

                                            @olivierlambert said in XCP-ng GPU Passthrough - No GPU found:

                                            Yes, using Nvidia card supporting GPU passthrough 😛

                                            Otherwise, there's "border line" patches on Windows drivers available on GitHub, but we won't find those for you 😉

                                            Well, this card is technically in the Quadro family, so I was hoping it'd work. I see solutions for libvirt/KVM, but not Xen. Any "nudge" would be greatly appreciated if anyone is willing. This is just a test environment. If the application works in this setup we'll buy proper hardware and go the AMD route.

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