My DGX Spark, which has worked fine for a few weeks, ssh: handshake failed

Accelerated Computing DGX Spark / GB10 User Forum DGX Spark / GB10
1

The Message I am getting is :

Unexpected Error

daemon not running: could not dial ‘spark-2d2e’: ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain

2

The error is about SSH authentication, not the daemon itself.

ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain

That means:

  • Your client reached spark-2d2e

  • Tried to log in with either no credentials or a public key

  • The DGX Spark did not accept any of those, so SSH gives up

try the following:

ssh -vvv spark@spark-2d2e

Look for lines like Offering public key and Authentication failed.
If you see no key offered, your local SSH config is the problem.

On the Mac/workstation, confirm you still have your private key:

ls -l ~/.ssh

3

Thank you. I have proceeded with deleting and recreating my user on the device and it seems to have worked.

4

for Windows go to C:\Users\username\.ssh edit with notepad and remove old names and re add host

5

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