[alsa-devel] snd-usb-audio syncronisation problem

Adrian Stancu adrian.stancu.82 at gmail.com
Mon Feb 25 19:32:38 CET 2008


Thanks for the update.
I tested your patch and 44.1kHz, 48kHz and 96kHz seem to work
correctly. Unfortunately, I am not able to test any rate higher than
96kHz, because I cannot modify this interface's sampling rate under
Linux (and if I modify it on another computer [a virtual machine], the
interface will reset to 44.1kHz whenever I "unplug the USB cable" AND
it is set to a rate higher than 96kHz).

I don't know if there's any way around this, but I currently don't see
any way of using this interface at >96kHz in Linux.

Best regards,

On Mon, Feb 25, 2008 at 2:44 PM, Clemens Ladisch <clemens at ladisch.de> wrote:
> Adrian Stancu wrote:
>  > I *think* the 0202 USB is also in the same situation.
>  OK, I made a quirk for both:
>  <http://hg.alsa-project.org/alsa-kernel/rev/247195dfda43>
>  Please also test with a sample format where packets are sent every four
>  microframes, i.e., > 96 kHz.
>  Regards,
>  Clemens

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