From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clemens Ladisch Subject: Re: Edirol M-16DX workaround found. Date: Fri, 26 Oct 2012 10:05:01 +0200 Message-ID: <508A442D.7070401@ladisch.de> References: <20121026012726.GA1683@beast> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from out1-smtp.messagingengine.com (out1-smtp.messagingengine.com [66.111.4.25]) by alsa0.perex.cz (Postfix) with ESMTP id 0527D2650F0 for ; Fri, 26 Oct 2012 10:05:05 +0200 (CEST) In-Reply-To: <20121026012726.GA1683@beast> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: Rick Kirk Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org 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 that. > 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. Regards, Clemens