Core Audio taking 3 minutes to open audio device

[miketoon]

Description

When starting an audio device with CoreAudio it takes 3 minutes to return when calling:

AudioDeviceStart(   AudioObjectID                   inDevice,
                    AudioDeviceIOProcID __nullable  inProcID)                                                   __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);

We are trying to upgrade from macosx12 but are running into this issue with our tests where we need to repeatedly start an audio device. This is causing a massive delay to the tests which is unworkable.

Platforms affected

• Azure DevOps
• GitHub Actions - Standard Runners
• GitHub Actions - Larger Runners

Runner images affected

• Ubuntu 20.04
• Ubuntu 22.04
• Ubuntu 24.04
• macOS 12
• macOS 13
• macOS 13 Arm64
• macOS 14
• macOS 14 Arm64
• macOS 15
• macOS 15 Arm64
• Windows Server 2019
• Windows Server 2022

Image version and build link

macos13:
Current image version: '20241023.237'
macos 15:
Current image version: '20241022.244'

Is it regression?

Yes macosx12

Expected behavior

Audio device is started in a few seconds or less

Actual behavior

Audio device doesn't start for 3 minutes hanging the application

Repro steps

call to

AudioDeviceStart(   AudioObjectID                   inDevice,
                    AudioDeviceIOProcID __nullable  inProcID)                                                   __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);

[susmitamane]

Hi @miketoon We will look into the issue and keep you posted with updates.