DGX Spark Network Conflict With Ubuntu 22.04.5 LTS Networking

Accelerated Computing DGX Spark / GB10 User Forum DGX Spark / GB10
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I have vanilla Ubuntu 22.04.5 desktop. Post initial configuration of DGX Spark, I connect DGX Spark to router via ethernet cable, not wireless. My desktop is also connected to same router. With both active, I have network conflicts on my desktop. Many browser pages will not load correctly, and pages which were loaded fail to refresh. For example - Amazon Music, gmail, ongoing searches of google for example.

I have disabled ipv6 as well as avahi-daemon service and socket on DGX Spark. These troubleshooting efforts failed. I have tried boot order, desktop first, DGX Spark second and vice versa. That did not resolve my issue. I have updated with most recent updates. This has not resolved my issue. Lastly, I went to online support. And I was directed here.

What I would hope/expect, I can configure the DGX Spark to simply ask for a local address from my router via DHCP. Then I can access via ssh, port forwarding to access dashboard, etc. without having DGX Spark hijack outbound network traffic from my browser on desktop.

I’m hoping Nvidia support and/or community suggestions will lead to configuration settings which enable this result.

Thanks.

prm

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Questions:

  1. Is your desktop on Ethernet or Wi-Fi to the router, and does the problem happen on other devices too or only the desktop?
  2. What is your router model, and do you have any “DHCP server” / “guest network” / “AP mode” / “mesh” features enabled?
  3. When the issue happens, what are your desktop’s default gateway IP and DNS servers, and do they match your router or the Spark?
  4. On the Spark, does “ss -ulpn” show listeners on UDP 67 or 53 (DHCP/DNS)? Is the Spark’s NetworkManager connection ipv4.method set to “shared”?
  5. Do you have a DHCP reservation for the Spark on the router, and have you seen any IP conflict warnings in the router logs?

If you don’t know the answer to those questions, I would recommend factory reset/recovery (official NVIDIA instructions):

https://docs.nvidia.com/dgx/dgx-spark/system-recovery.html
(Recovery image download page, if you need it: https://www.nvidia.com/en-us/drivers/dgx-spark-recovery-software/ )

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Hi @raphael.amorim,

Thanks for the reply and suggestions on settings. Before logging out yesterday, I did an update. And this afternoon when I am online after work, I’m actually not having conflicts. That beats having to do a complete factory reset.

I did go and check the details you suggested. And once I booted the DGX, I confirmed my default gateway did not change. Likewise, my DNS server didn’t change. Then I accessed the DGX and confirmed the settings for both default gateway/DNS server matched.

So for now, I think I’m good. I’m going to close this. And thanks again for the suggestions.

prm

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You’re welcome, let us know if you need help in the future