[alsa-devel] Edirol M-16DX workaround found.

Clemens Ladisch clemens at ladisch.de
Fri Oct 26 10:05:01 CEST 2012

Rick Kirk wrote:
> what would be required to enable a clock sync via the USB connection
> between the PC and mixer?

With USB audio, the PCM stream itself can be used as synchronization
source (similar to S/PDIF), but it appears this device does not support

> I have also read that there are other devices that suffer from this
> same fault so there is potential that any fix may apply to more than
> this one device.

Yes, but nobody has found the time to write the code.

At the moment, the USB Audio Class 2.0 code supports a capture stream
as synchronization source for playback, but only for devices where the
descriptors correctly describe this.

> P.S.  I have also requested technical documentation from Roland for
> this device

The problem is entirely lack of time.


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