<![CDATA[Passing Though a GPU]]>I encountered an issue while following the instructions from Tom Lawrence on passing through my GPU. Despite following the steps meticulously, the advanced tab of the VM I passed it to on XCP-ng still does not show the GPU. I'm unsure about the missing element in the process.

495e9860-04cc-44d3-8513-196d1e1a6701-image.png

The VM is running Ubuntu 22.4.
Running XCP-ng 8.3

Here, you can see the assignable PCI

4ca6b444-02c2-4301-aa16-fb267f256556-image.png

This is what I get after running...

xe vm-param-get param-name=other-config uuid=156a2344-3d6a-50a6-bc0e-b3d252e820c0
2ad5c490-0861-43f6-952f-b6e5542a6e90-image.png

Thanks for any input
Dino

]]>https://xcp-ng.org/forum/topic/8911/passing-though-a-gpuRSS for NodeTue, 14 Apr 2026 06:21:31 GMTSat, 27 Apr 2024 19:18:38 GMT60<![CDATA[Reply to Passing Though a GPU on Thu, 02 May 2024 12:45:32 GMT]]>\o/ perfect!!

]]>https://xcp-ng.org/forum/post/76678https://xcp-ng.org/forum/post/76678Thu, 02 May 2024 12:45:32 GMT<![CDATA[Reply to Passing Though a GPU on Thu, 02 May 2024 12:35:41 GMT]]>@olivierlambert That worked. I selected an offline snapshot, and the job was completed. Thanks again.

]]>https://xcp-ng.org/forum/post/76677https://xcp-ng.org/forum/post/76677Thu, 02 May 2024 12:35:41 GMT<![CDATA[Reply to Passing Though a GPU on Thu, 02 May 2024 10:36:58 GMT]]>Keep us posted!

]]>https://xcp-ng.org/forum/post/76668https://xcp-ng.org/forum/post/76668Thu, 02 May 2024 10:36:58 GMT<![CDATA[Reply to Passing Though a GPU on Thu, 02 May 2024 10:34:13 GMT]]>@olivierlambert yes, the reason was quite obvious. A solution is what I was looking for. I will definitely try it with offline snapshots. Appreciate the info.

]]>https://xcp-ng.org/forum/post/76665https://xcp-ng.org/forum/post/76665Thu, 02 May 2024 10:34:13 GMT<![CDATA[Reply to Passing Though a GPU on Thu, 02 May 2024 08:47:49 GMT]]>The reason why is written in caps: VM HAS PCI ATTACHED. You can't snapshot live a VM with a PCI device attached. A possible trick: use "Offline snapshot" in your backup job, that might work.

]]>https://xcp-ng.org/forum/post/76641https://xcp-ng.org/forum/post/76641Thu, 02 May 2024 08:47:49 GMT<![CDATA[Reply to Passing Though a GPU on Wed, 01 May 2024 23:50:50 GMT]]>@olivierlambert

I thought because the nvidia-smi command showed an error that it did not pass through correctly. I went into the Jellyfin app and set it to use Transcoding, and it worked. Now, the only problem is, for some reason, I can't get that particular VM to complete a remote Delta backup. I continue to get the error shown above. I've deleted the job and rebuilt it, but get the same error. Any ideas? I really need to back up this media server. Thanks again.

]]>https://xcp-ng.org/forum/post/76625https://xcp-ng.org/forum/post/76625Wed, 01 May 2024 23:50:50 GMT<![CDATA[Reply to Passing Though a GPU on Wed, 01 May 2024 06:51:43 GMT]]>
  • Excellent news for being able to rely on the GPU šŸ™‚ So the driver accepted to install? What did you change?
  • The UI with real PCI passthrough displayed is now available in latest XO.
    • ]]>    https://xcp-ng.org/forum/post/76529https://xcp-ng.org/forum/post/76529Wed, 01 May 2024 06:51:43 GMT    <![CDATA[Reply to Passing Though a GPU on Wed, 01 May 2024 02:32:50 GMT]]>@olivierlambert

    I was able to get things working. Even though it does not show in the GUI on XO, it works for transcoding. However, I cannot complete a backup of that particular VM with this error...

    cfdf5458-dba4-405c-bd86-2367d085b742-image.png

    ]]>    https://xcp-ng.org/forum/post/76522https://xcp-ng.org/forum/post/76522Wed, 01 May 2024 02:32:50 GMT    <![CDATA[Reply to Passing Though a GPU on Mon, 29 Apr 2024 13:15:47 GMT]]>Hey no problem, you are welcome šŸ™‚ Really hope you'll make it!

    ]]>    https://xcp-ng.org/forum/post/76402https://xcp-ng.org/forum/post/76402Mon, 29 Apr 2024 13:15:47 GMT    <![CDATA[Reply to Passing Though a GPU on Mon, 29 Apr 2024 12:51:45 GMT]]>@Dean50 something strange is going on. I turned on transcoding in the Jellyfin console. It seems that the transcoding is working when it is switched on, but it is not providing audio. Regardless, it seems that XCP-ng is passing through the GPU as it is intended. Thanks for all your input. Greatly appreciate the support.

    ]]>    https://xcp-ng.org/forum/post/76398https://xcp-ng.org/forum/post/76398Mon, 29 Apr 2024 12:51:45 GMT    <![CDATA[Reply to Passing Though a GPU on Mon, 29 Apr 2024 12:17:45 GMT]]>@Dean50

    Yes....

    03f57684-c41a-46f5-a33f-7dcc3b9c6f90-image.png

    ]]>    https://xcp-ng.org/forum/post/76392https://xcp-ng.org/forum/post/76392Mon, 29 Apr 2024 12:17:45 GMT    <![CDATA[Reply to Passing Though a GPU on Mon, 29 Apr 2024 11:53:01 GMT]]>lspci in the VM shows the 2 nvidia pci devices, right?

    ]]>    https://xcp-ng.org/forum/post/76388https://xcp-ng.org/forum/post/76388Mon, 29 Apr 2024 11:53:01 GMT    <![CDATA[Reply to Passing Though a GPU on Mon, 29 Apr 2024 11:13:25 GMT]]>@olivierlambert Something is still off. When I run the Nvidia-smi command, I get an unknown error after installing the NVIDIA Drivers.

    fedec236-70ea-445e-a7cf-b8ce0e839127-image.png

    ]]>    https://xcp-ng.org/forum/post/76380https://xcp-ng.org/forum/post/76380Mon, 29 Apr 2024 11:13:25 GMT    <![CDATA[Reply to Passing Though a GPU on Mon, 29 Apr 2024 06:05:54 GMT]]>Still, despite the display issue, does it work now?

    ]]>    https://xcp-ng.org/forum/post/76367https://xcp-ng.org/forum/post/76367Mon, 29 Apr 2024 06:05:54 GMT    <![CDATA[Reply to Passing Though a GPU on Mon, 29 Apr 2024 06:05:36 GMT]]>That's expected, displaying PCI passed in the UI will come in few days now šŸ™‚

    ]]>    https://xcp-ng.org/forum/post/76366https://xcp-ng.org/forum/post/76366Mon, 29 Apr 2024 06:05:36 GMT    <![CDATA[Reply to Passing Though a GPU on Sun, 28 Apr 2024 23:57:29 GMT]]>@Dean50

    You were correct. It had two items for the NVIDIA GPU to pass through. However, it still did not show after getting passed, assigned, and rebooted.

    5fda7a34-e457-4db6-9576-83d46e4cf49b-image.png

    66c51f76-b09a-4ddc-a479-ce4e962bb063-image.png

    ]]>    https://xcp-ng.org/forum/post/76360https://xcp-ng.org/forum/post/76360Sun, 28 Apr 2024 23:57:29 GMT    <![CDATA[Reply to Passing Though a GPU on Sun, 28 Apr 2024 20:50:47 GMT]]>@olivierlambert Thanks again for your input. How do I go about the lspci in Dom0? Iā€™m learning more, but Iā€™m still a novice. lol

    ]]>    https://xcp-ng.org/forum/post/76356https://xcp-ng.org/forum/post/76356Sun, 28 Apr 2024 20:50:47 GMT    <![CDATA[Reply to Passing Though a GPU on Sun, 28 Apr 2024 20:40:21 GMT]]>Double check you did not forgot to pass the whole GPU (which is maybe using 2x PCIe addresses, like the GPU itself and the sound/HDMI part). Please do a lspci command in the Dom0 to check you don't have any other Nvidia entry.

    ]]>    https://xcp-ng.org/forum/post/76352https://xcp-ng.org/forum/post/76352Sun, 28 Apr 2024 20:40:21 GMT    <![CDATA[Reply to Passing Though a GPU on Sun, 28 Apr 2024 19:15:08 GMT]]>@scot1297tutaio

    I installed the NVIDIA Drivers but still do not see the card as available in the VM under the GPU option. It still shows an unclickable NONE. This card may not work. It is a lower-end card I had lying around.

    93e6937e-5cf6-4acd-bf64-6e56153eeaf4-image.png

    173ddf54-3f1d-45b2-b305-6ff7951dae4b-image.png

    When I run the nvidia-smi command, I'm getting this...

    5a8b9200-765f-470f-89e7-3acdd6f54610-image.png

    ]]>    https://xcp-ng.org/forum/post/76349https://xcp-ng.org/forum/post/76349Sun, 28 Apr 2024 19:15:08 GMT    <![CDATA[Reply to Passing Though a GPU on Sun, 28 Apr 2024 14:49:45 GMT]]>@Dean50 Also in there documentation they have a list of cards that will work.

    ]]>    https://xcp-ng.org/forum/post/76340https://xcp-ng.org/forum/post/76340Sun, 28 Apr 2024 14:49:45 GMT    <![CDATA[Reply to Passing Though a GPU on Sun, 28 Apr 2024 14:30:34 GMT]]>It's perfectly normal that the PCI device number is different between the dom0 and the VM. Because the VM is a fully independent system with its own PCI enumeration.

    ]]>    https://xcp-ng.org/forum/post/76337https://xcp-ng.org/forum/post/76337Sun, 28 Apr 2024 14:30:34 GMT    <![CDATA[Reply to Passing Though a GPU on Sun, 28 Apr 2024 13:20:11 GMT]]>@scot1297tutaio
    Thank you very much for the information. I made a very superficial attempt at installing drivers for the card. I will dive into that a bit deeper today or sometime soon to try it. Hopefully this particular card will work. Thank you very much for the information. I will do a search for the jellyfin article you mentioned . Thanks again.

    ]]>    https://xcp-ng.org/forum/post/76328https://xcp-ng.org/forum/post/76328Sun, 28 Apr 2024 13:20:11 GMT    <![CDATA[Reply to Passing Though a GPU on Sun, 28 Apr 2024 12:48:07 GMT]]>@Dean50 Based on your lspci inside the VM the gpu is passed through. Did you install the correct drivers for that card inside the VM? I have found on some nvidia cards I had to go download the correct driver for that card and then it works with Plex or jellyfin, guessing for transcoding because of the VM name.

    Also jellyfin has a great documentation on getting the card setup in Linux for use of transcoding.

    ]]>    https://xcp-ng.org/forum/post/76325https://xcp-ng.org/forum/post/76325Sun, 28 Apr 2024 12:48:07 GMT    <![CDATA[Reply to Passing Though a GPU on Sun, 28 Apr 2024 12:05:32 GMT]]>@olivierlambert

    It shows the card I'm passing through, but the line above it shows the number it should be. It was 0000:03:00.0 when I looked for it on the XO server.

    6913a0cd-c508-43df-bbcb-f0553c9d2f0e-image.png

    ]]>    https://xcp-ng.org/forum/post/76324https://xcp-ng.org/forum/post/76324Sun, 28 Apr 2024 12:05:32 GMT