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    Nvidia Quadro P400 not working on Ubuntu server via GPU/PCIe passthrough

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    • T Offline
      TheFrisianClause
      last edited by

      CentOS8/RockyLinux 8.5 apparently has the same issue. I believe it has something to do with the passthrough handled by XCP-NG for some reason...

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      • N Offline
        NoPantsMcDance
        last edited by

        I'm having the exact same problem on my R630 with a E5-2620V3. Tested on Ubuntu 20.04. Tried using the latest drivers (470) as well as the future build (495) with the same results of no device being found when running nvidia-smi. Card has been confirmed working on a baremetal windows machine as well as inside a proxmox VM. Happy to do anything needed to help get this figured out.

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

          Same error message?

          N 1 Reply Last reply Reply Quote 0
          • N Offline
            NoPantsMcDance @olivierlambert
            last edited by

            @olivierlambert yes I'm getting this

            [    5.091321] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  470.82.00  Thu Oct 14 10:24:40 UTC 2021
[   46.870183] NVRM: GPU 0000:00:05.0: RmInitAdapter failed! (0x22:0x56:667)
[   46.870225] NVRM: GPU 0000:00:05.0: rm_init_adapter failed, device minor number 0
[   46.877175] NVRM: GPU 0000:00:05.0: RmInitAdapter failed! (0x22:0x56:667)
[   46.877214] NVRM: GPU 0000:00:05.0: rm_init_adapter failed, device minor number 0
[   53.426603] NVRM: GPU 0000:00:05.0: RmInitAdapter failed! (0x22:0x56:667)
[   53.426701] NVRM: GPU 0000:00:05.0: rm_init_adapter failed, device minor number 0
[   53.433752] NVRM: GPU 0000:00:05.0: RmInitAdapter failed! (0x22:0x56:667)
[   53.433830] NVRM: GPU 0000:00:05.0: rm_init_adapter failed, device minor number 0
[  412.663599] NVRM: GPU 0000:00:05.0: RmInitAdapter failed! (0x22:0x56:667)
[  412.663716] NVRM: GPU 0000:00:05.0: rm_init_adapter failed, device minor number 0
[  412.671452] NVRM: GPU 0000:00:05.0: RmInitAdapter failed! (0x22:0x56:667)
[  412.671554] NVRM: GPU 0000:00:05.0: rm_init_adapter failed, device minor number 0
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            • olivierlambertO Offline
              olivierlambert Vates 🪐 Co-Founder CEO
              last edited by

              Okay thanks for the feedback.

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              • T Offline
                TheFrisianClause
                last edited by

                Well I went back to Proxmox now and it works just fine on a Ubuntu VM. The passthrough works as expected... So I have no idea in what is going on within XCP-NG, as it should work as well?

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

                  At this point, you best option is to ask on Xen devel mailing list. I have the feeling it's a very low level problem on Xen itself.

                  In the meantime, I'll try to get my hand on a P400 for our lab.

                  T 2 Replies Last reply Reply Quote 0
                  • T Offline
                    TheFrisianClause @olivierlambert
                    last edited by TheFrisianClause

                    @olivierlambert Did you manage to replicate the issue or have found similar issues?

                    Because I am actually wanting to upgrade again to XCP-NG as I am a bit tired of having 'quorum' in proxmox which forces me to have 3 hosts up a time when using only 1 or 2 ...

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

                      I still need to get the card, I have not managed yet.

                      Not sure to understand your quorum issue on ProxMox?

                      T 1 Reply Last reply Reply Quote 0
                      • T Offline
                        TheFrisianClause @olivierlambert
                        last edited by

                        @olivierlambert Well what I have with the quorum issue is that I have 3 machines to have quorum, while I believe in XCP-NG I can even have one machine turned on with the VM's on that particular machine without having to have quorum and be able to use the VM's.

                        In Proxmox when I don't have quorum I cannot use the VM's except when I do this on one host 'pvecm expected 1' which is actually a dangerous command if I am not mistaken...

                        So this is why I would like to migrate to XCP-NG only the PCI GPU passthrough keeps me back...

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                        • T Offline
                          TheFrisianClause
                          last edited by TheFrisianClause

                          Could my issue be that I have done this on a R620 where the PCI riser has a max of 75Watt? That the P400 draws more power?
                          because now I have the P400 in a different machine where the card can draw more power without issues and it also works without issues.

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

                            So you mean in a different hardware, now it works with XCP-ng?

                            What's the other machine?

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                            • T Offline
                              TheFrisianClause @olivierlambert
                              last edited by TheFrisianClause

                              @olivierlambert

                              Well not at the moment, I have not tried it on a different hardware machine with XCP-NG.

                              I have however currently been using the 'different' hardware machine with Proxmox and the card works great with PCI passthrough'ing the Quadro P400. So I might try this tomorrow with XCP-NG on this machine...

                              If this does not work, I am really wondering what makes this not working on XCP-NG...

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

                                That's the information I need indeed (to be able to know if it's a hardware problem vs software)

                                T 1 Reply Last reply Reply Quote 0
                                • T Offline
                                  TheFrisianClause @olivierlambert
                                  last edited by TheFrisianClause

                                  @olivierlambert

                                  I reinstalled XCP-NG on a different machine (self build server), and have passedthrough the Quadro P400 to my Plex VM.

                                  The Kernel driver is installed like shown here:
                                  a403a82e-9830-48ac-9536-2926e99eb240-image.png

                                  Only when executing nvidia-smi, this happens:
                                  5ba7f3d5-5feb-4c5d-92df-20f28e5f6fb6-image.png

                                  The PCI device has been passed through with succes and everything went fine upon here. Still wondering what the issue could be here... As I did the same on Proxmox without any modifications.
                                  I also followed this tutorial:
                                  https://drive.google.com/drive/folders/1JlKe-SUeEUvNhTS3-z7En_ypWnYwx_K2

                                  Which is from Craftcomputing (credits to him).
                                  The only thing we dont do from the tutorial which has to be done on proxmox is the last step '-Hide VM identifiers from nVidia-'.

                                  EDIT:
                                  Well after some more debugging, this came back:

                                  [    3.869646] [drm] [nvidia-drm] [GPU ID 0x00000006] Loading driver
[    3.869648] [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:00:06.0 on minor 1
[    3.875046] ppdev: user-space parallel port driver
[    3.915702] Adding 4194300k swap on /swap.img.  Priority:-2 extents:5 across:4620284k SSFS
[    4.284521] Decoding supported only on Scalable MCA processors.
[    4.439623] Decoding supported only on Scalable MCA processors.
[    4.499267] Decoding supported only on Scalable MCA processors.
[    8.103242] snd_hda_intel 0000:00:05.0: azx_get_response timeout, switching to polling mode: last cmd=0x004f0015
[    8.355892] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:05.0/sound/card0/input6
[    8.355940] input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:05.0/sound/card0/input7
[    8.355978] input: HDA NVidia HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:05.0/sound/card0/input8
[    8.356014] input: HDA NVidia HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:05.0/sound/card0/input9
[    8.356049] input: HDA NVidia HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:05.0/sound/card0/input10
[    8.356085] input: HDA NVidia HDMI/DP,pcm=11 as /devices/pci0000:00/0000:00:05.0/sound/card0/input11
[    8.427430] alua: device handler registered
[    8.428989] emc: device handler registered
[    8.430986] rdac: device handler registered
[    8.506988] EXT4-fs (xvda2): mounted filesystem with ordered data mode. Opts: (null)
[   25.789595] NVRM: GPU 0000:00:06.0: RmInitAdapter failed! (0x22:0x56:667)
[   25.789622] NVRM: GPU 0000:00:06.0: rm_init_adapter failed, device minor number 0
[   25.794920] NVRM: GPU 0000:00:06.0: RmInitAdapter failed! (0x22:0x56:667)
[   25.794943] NVRM: GPU 0000:00:06.0: rm_init_adapter failed, device minor number 0
[   38.508573] NVRM: GPU 0000:00:06.0: RmInitAdapter failed! (0x22:0x56:667)
[   38.508614] NVRM: GPU 0000:00:06.0: rm_init_adapter failed, device minor number 0
[   38.514513] NVRM: GPU 0000:00:06.0: RmInitAdapter failed! (0x22:0x56:667)
[   38.514542] NVRM: GPU 0000:00:06.0: rm_init_adapter failed, device minor number 0
[ 1254.128346] NVRM: GPU 0000:00:06.0: RmInitAdapter failed! (0x22:0x56:667)
[ 1254.128378] NVRM: GPU 0000:00:06.0: rm_init_adapter failed, device minor number 0
[ 1254.134808] NVRM: GPU 0000:00:06.0: RmInitAdapter failed! (0x22:0x56:667)
[ 1254.134834] NVRM: GPU 0000:00:06.0: rm_init_adapter failed, device minor number 0

                                  I think something goes wrong between the VM and XCP-NG, maybe the hiding of the GPU to DOM0?

                                  EDIT 2:
                                  This topic on the forum has the same issue: https://xcp-ng.org/forum/topic/4406/is-nvidia-now-allows-geforce-gpu-pass-through-for-windows-vms-on-linux/7?_=1640695038223

                                  EDIT 3:
                                  I also made a thread on the Nvidia forums to see if they know anything:
                                  https://www.nvidia.com/en-us/geforce/forums/geforce-graphics-cards/5/479893/xcp-ng-ubuntu-vm-error-quadro-p400/

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

                                    Hi,

                                    FYI, I just ordered a card for our lab, so we'll be able to try to reproduce the issue on our side 🙂

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                                    • T Offline
                                      TheFrisianClause @olivierlambert
                                      last edited by

                                      @olivierlambert Great let me know how it goes! As I have bought an WX2100 but unfortunately this one cannot be used for transcoding in plex... So I have to get back to Proxmox again with the Quadro P400.

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                                      • T Offline
                                        TheFrisianClause
                                        last edited by

                                        Now back on Proxmox, although I also had some RMINIT errors on here, but these were related to the Hypervisor which were resolved pretty quick.

                                        Also on Proxmox I have to change some Grub parameters and such, isn't this something that has to be done on Xen as well? And then on hypervisor level?

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

                                          Like what parameter exactly? I think Xen doesn't support yet hiding the hypervisor information.

                                          T 1 Reply Last reply Reply Quote 0
                                          • T Offline
                                            TheFrisianClause @olivierlambert
                                            last edited by

                                            @olivierlambert

                                            Parameters such as these in /etc/default/grub:

                                            GRUB_CMDLINE_LINUX_DEFAULT="quiet amd_iommu=on"
                                            GRUB_CMDLINE_LINUX="textonly video=astdrmfb video=efifb:off"

                                            Also someone replied to the topic I created on Nvidia forums:
                                            https://forums.developer.nvidia.com/t/xcp-ng-ubuntu-vm-error-quadro-p400/199084

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