Originally Posted by disconnecktie
USB audio requires support in the kernel to work. It is highly likely this support is lacking from the aosp kernel. It is completely possible that a dev could include usb audio though. I recall seeing it as not set in the config but the proper files would also need to be put into place and who knows if that would even compile properly into aosp from sense.
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I tried using Lunar kernel in addition to the bundled kernel with each ROM.
I will have to check over on the Lunar thread to see if they know whether support is included in the kernel.
Interestingly, I made a little progress by flashing the latest version of the USB Audio Patcher MOD in the thread started by JackNorris. Now I get the familiar HTC One USB Audio stepping (0 or 100%, no middle steps) as well as audio being routed from the speaker.
The problem is no sound comes out of the external DAC, although it is routed away from the speaker. Basically, it is the same behavior after flashing the patch as it is in the Sense ROMs, but just no audio coming from the DAC.
I believe the issue is something missing from the Services.jar part of the framework. I am now in over my head.
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