Multichannel USB Audio not working on Google Pixel 9 Pro

[hendrik-algoriddim]

Android version(s): 15 Android device(s): Pixel 9 Pro Oboe version: Oboe v.1.9.2 App name used for testing: Oboe Tester,(91) v2.7.2

Short description Multichannel audio (i.e. channels beyond the first two) does not work on Google Pixel 9 Pro with Android 15.

Steps to reproduce Connect a USB Audio Device with 4 output channels (see list of tested devices below) Open Oboe Tester Select Test Output Select device Select 4 Channels Open Start

Expected behavior Signal from all Outputs (0,1,2,3)

Actual behavior Signal only from Outputs 0,1, silence on Outputs 2,3

Device

Denon DJ DS1 AlphaTheta / Pioneer DJ DDJ FLX2 AlphaTheta / Pioneer DJ DDJ FLX4 AlphaTheta / Pioneer DJ DDJ GRV6

[triplef]

According to our partner, the same issue also occurs on Pixel 9 (non-Pro) running Android 15.

The issue does not occur on Pixel 8a and Pixel 5 running Android 14.

[flamme]

Thanks for filing the bug! I will create a internal bug to discuss the issue with Pixel team.

[flamme]

Internal bug id 414882806 for reference.