Cannot SSH into my Bluefield-2 DPU even though password is not changed

My issue is that I myself set the password for the DPU. The same password works when I login via RSHIM but it says “permision denied” when I login via SSH. I have tried eveything I could to change and remove the password/remove it.

The following list is what I tried, but nothing has worked so far -

  1. tried logging in via rshim and changing the password as well as deleting it - didn’t work

  2. I configured settings to “PermitEmptyPasswords yes“ - did not work

  1. Tried starting, restarting and enabling ssh throgh rshim - did not work

  1. tried rebooting dpu from the server - did not work

At the end, all these methods still did not give me any results and i am still stuck here…what to do?

sudouser1@amma:~$ ssh ubuntu@192.168.100.4
ubuntu@192.168.100.4: Permission denied (publickey,password).
sudouser1@amma:~$