Re: Schiit Bifrost, usb, C-Media 6631, ALSA/MPD

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Apologies, I had returned that Bifrost and been using another device based on the XMOS chip (Worked perfectly). I now have a new Bifrost and I'm running Fedora 17 with ALSA 1.0.25

Here is the output requested of me a while back: https://gist.github.com/2897496

On Mon, Nov 7, 2011 at 8:27 AM, Clemens Ladisch <cladisch@xxxxxxxxxxxxxx> wrote:
Andrew Dunn wrote:
> The device (C-Media 6631) is recognized and will play under newer kernels.
> However When I switch to different sampling frequencies I hear major
> artifacts and I can cat the stream file in /proc/asound and see that the
> stream output frequency does not match what the file is.

> If I stop and start the music enough times it seems to resolve itself,
> however that is an unacceptable fix.

So setting the sampling rate seems to be unreliable.

> Now I will switch to a 176.4Khz file:
> ...
>     Momentary freq = 176402 Hz (0x16.0ce0)
>     Rates: 44100, 48000, 88200, 96000, 192000

It's interesting that the device runs at 176.4 kHz although this is not
one of the supported rates; the driver wouldn't allow this in theory.


Please try to install a new version of the usbutils package so that we
can get a proper lsusb output.

········································································
Are there any error messages in the system log when you try to play
something?  (/var/log/messages or the output of dmesg)


Regards,
Clemens

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