[alsa-devel] [PATCH v3] ALSA: usb: Work around CM6631 sample rate change bug
hegge at resisty.net
Tue Mar 12 09:28:29 CET 2013
On Tue, Mar 12, 2013 at 08:55:55AM +0100, Clemens Ladisch wrote:
> 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 . 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  lists
> > interface 2-5, 7 and 8. My Corda  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?
It only has a USB input. The SPDIF output of the CM6631 is connected to
a CS8416 SPDIF receiver.
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