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

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    • P
      Pyroteq @TheFrisianClause
      last edited by

      @thefrisianclause

      Nice to see a bit of action in this thread after a few weeks. It seems both of use are using Ivy Bridge CPU's, I wonder if the issue is related to our CPU's or chipsets?

      I notice in the Reddit thread you posted it mentions something about the E3-12xx CPU's:

      IMPORTANT ADDITIONAL COMMANDS
      You might need to add additional commands to this line, if the passthrough ends up failing. For example, if you're using a similar CPU as I am (Xeon E3-12xx series), which has horrible IOMMU grouping capabilities, and/or you are trying to passthrough a single GPU.
      These additional commands essentially tell Proxmox not to utilize the GPUs present for itself, as well as helping to split each PCI device into its own IOMMU group. This is important because, if you try to use a GPU in say, IOMMU group 1, and group 1 also has your CPU grouped together for example, then your GPU passthrough will fail.

      Is it possible that same GRUB config is required here? Sorry, I'm probably not much help when it comes to hardware troubleshooting on Linux.

      GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on iommu=pt pcie_acs_override=downstream,multifunction nofb nomodeset video=vesafb:off,efifb:off"

      I don't have the faintest idea of what any of this does or if it could help.

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      • T
        TheFrisianClause @Pyroteq
        last edited by TheFrisianClause

        @pyroteq

        Yeah I am having this problem for almost 2 years now, as I have been trying to migrate to XCP-NG on and off to see if I can get this to work. So far I couldnt and I was pushed back to Proxmox.

        The part of the steps that you are referring to are the steps that need to be done on the Proxmox host itself, although in this case the GPU is actually seen by the VM so the passthrough steps provided in this documentation: https://xcp-ng.org/docs/compute.html#pci-passthrough are working. Also the documentation part you are referring to are for E3-12xx CPU's, mine is an E5, so I dont have to do these steps and havent done those when on Proxmox.

        But when you installed the Nvidia drivers on lets say in my case an ubuntu 20.04 VM, it does install it succesfully but for some reason nvidia-smi says 'no devices were found' while the VM sees the GPU (Quadro P400) and does confirm that the nvidia drivers have been installed.

        So I am a bit clueless as where this error could be, as I have searched alot of forms right now about this particular problem but without succes. Some even say that the card could be 'dead' while it does work on Proxmox and even VMware ESXi.

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

          I truly hope the community can assist in there, I have also no idea 🙂

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          • T
            TheFrisianClause
            last edited by

            Well community bring it on! 🙂
            Curious on what you guys think about this and how to resolve this issue...

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            • T
              TheFrisianClause
              last edited by

              Okay so did some test/troubleshooting again, did not do anything. Tried multiple nvidia drivers but no luck still the nvidia-smi error 'no devices were found'.

              And still this error occurs:

              [    3.244947] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  495.29.05  Thu Sep 30 16:00:29 UTC 2021
[    4.061597] NVRM: GPU 0000:00:09.0: RmInitAdapter failed! (0x22:0x56:751)
[    4.064473] NVRM: GPU 0000:00:09.0: rm_init_adapter failed, device minor number 0
[    4.074551] NVRM: GPU 0000:00:09.0: RmInitAdapter failed! (0x22:0x56:751)
[    4.074650] NVRM: GPU 0000:00:09.0: rm_init_adapter failed, device minor number 0
[   28.791682] NVRM: GPU 0000:00:09.0: RmInitAdapter failed! (0x22:0x56:751)
[   28.791750] NVRM: GPU 0000:00:09.0: rm_init_adapter failed, device minor number 0
[   28.799413] NVRM: GPU 0000:00:09.0: RmInitAdapter failed! (0x22:0x56:751)
[   28.799476] NVRM: GPU 0000:00:09.0: rm_init_adapter failed, device minor number 0
[   37.904451] NVRM: GPU 0000:00:09.0: RmInitAdapter failed! (0x22:0x56:751)
[   37.904532] NVRM: GPU 0000:00:09.0: rm_init_adapter failed, device minor number 0
[   37.913443] NVRM: GPU 0000:00:09.0: RmInitAdapter failed! (0x22:0x56:751)
[   37.913527] NVRM: GPU 0000:00:09.0: rm_init_adapter failed, device minor number 0

              I have no idea on what this is and how to resolve this. I only have this issue with XCP-NG. ESXi and Proxmox work just fine without any errors. Could it be a kernel parameter which I am missing in the hypervisor?

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              • T
                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
                  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
                    olivierlambert Vates 🪐 Co-Founder CEO
                    last edited by

                    Same error message?

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

                        Okay thanks for the feedback.

                        1 Reply Last reply Reply Quote 0
                        • T
                          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
                            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
                              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 ...

                              1 Reply Last reply Reply Quote 0
                              • olivierlambertO
                                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?

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                                • T
                                  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
                                    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.

                                    1 Reply Last reply Reply Quote 0
                                    • olivierlambertO
                                      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?

                                      T 1 Reply Last reply Reply Quote 0
                                      • T
                                        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...

                                        1 Reply Last reply Reply Quote 0
                                        • olivierlambertO
                                          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
                                            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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