From mboxrd@z Thu Jan  1 00:00:00 1970
From: Clemens Ladisch <clemens@ladisch.de>
Subject: Re: [PATCH v3] ALSA: usb: Work around CM6631 sample
 rate change bug
Date: Tue, 12 Mar 2013 08:55:55 +0100
Message-ID: <513EDF8B.6000504@ladisch.de>
References: <20130305220303.GD20417@pvv.ntnu.no>
 <20130311213908.GP20417@pvv.ntnu.no>
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Torstein Hegge wrote:
> There are still some issues with the Schiit Bifrost as described by
> Chris Hermansen in "Status of CM6631 USB" on alsa-user [1]. While the
> workaround fixes the sample rate change issue in some cases, he still
> sometimes get mangled audio on sample rate change.
>
> Any ideas on what could be causing this difference between seemingly
> similar hardware would be appreciated.

Different firmware.

> One difference is that 'lsusb -v' from the Schiit Bifrost [2] lists
> interface 2-5, 7 and 8. My Corda [3] and the Asus card only lists
> 0, Audio, Control Device
> 1, Audio, Streaming
> 2, Human Interface Device (this is number 6 in the Schiit)
>
> The extra interfaces listed by the Schiit is probably not backed by any
> hardware in the CM6631.

Does the Schiit have all those Line/Mic/SPDIF/MIDI ports?


Regards,
Clemens