serial_console_client.serial_ports.list is returning an empty list on a Bootdiagnostics enabled Azure VM

[shruti25ratnam]

• Package Name: azure.mgmt.serialconsole
• Package Version:
• Operating System: Windows and Ubuntu
• Python Version: 3.12

Describe the bug
A clear and concise description of what the bug is.
List Serial port is returning an empty list.
ACCClient action status: Serial ports: []

https://cirrusperf.azurewebsites.net/v1/testpassinstances/c/207210660/runsets/339057174/runs/3cfbe5cb-4342-45b4-9b99-afe435f297a0/actions/1/actiondetail

To Reproduce
Steps to reproduce the behavior:

1. from azure.mgmt.serialconsole.models import SerialPort

2. Enable BootDiagnostics for the VM: vm.diagnostics_profile.boot_diagnostics = BootDiagnostics(enabled=True)

3. try:
   TestContext.sdk.inform(f"Testing serial console connection for VM {vm_name}")
   serial_ports_result = await serial_console_client.serial_ports.list(
   resource_group_name=resource_group_name,
   resource_provider_namespace="Microsoft.Compute",
   parent_resource=vm_name,
   parent_resource_type="virtualMachines"
   )
   serial_ports = serial_ports_result.value
   except Exception as e:
   TestContext.sdk.inform(f"Failed to test serial console connection for VM {vm_name}: {e}")
   return False

   return True

Expected behavior
A clear and concise description of what you expected to happen.
To return atleast 1 serial port.
Serial console is enabled on the subscription by default.
Screenshots
If applicable, add screenshots to help explain your problem.
https://cirrusperf.azurewebsites.net/v1/testpassinstances/c/207210660/runsets/339057174/runs/3cfbe5cb-4342-45b4-9b99-afe435f297a0/actions/1/actiondetail

Additional context
Add any other context about the problem here.
This is a CloudEx validation test

[mccoyp]

Hi @shruti25ratnam, thank you for opening an issue. I'll tag some folks who can take a look and get back to you as soon as possible.

[msyyc]

@ChenxiJiang333 please help on this issue

[ChenxiJiang333]

got it

[ChenxiJiang333]

Hi, @shruti25ratnam
I failed to reproduce the issue. the connection may need some time to be prepared so please wait for a while after a vm created.

[github-actions]

Hi @shruti25ratnam. Thank you for opening this issue and giving us the opportunity to assist. To help our team better understand your issue and the details of your scenario please provide a response to the question asked above or the information requested above. This will help us more accurately address your issue.

[shruti25ratnam]

@ChenxiJiang333 after some wait I was able to retrieve the port but the port shows status = enabled even when the serial-console is disabled. Do you happen to know what port 0 is for? is it a COM port?

[ChenxiJiang333]

@ChenxiJiang333 after some wait I was able to retrieve the port but the port shows status = enabled even when the serial-console is disabled. Do you happen to know what port 0 is for? is it a COM port?

Not sure about this, since we're not domain expert on this server, you can open an issue at https://github.com/Azure/azure-rest-api-specs/issues to get suggestion from the service team.

[xiangyan99]

This is the service behavior and please open ticket for the service for help.

https://azure.microsoft.com/support/create-ticket