[alsa-devel] [usb-audio] M-Audio FastTrack Pro giving invalid sample rates

Clemens Ladisch cladisch at fastmail.net
Wed Nov 28 10:27:51 CET 2007

Lasse Kärkkäinen wrote:
> ALSA seems to think that the card supports a wide range of sampling
> rates, but it does not manage to set them in practice. I do not know
> which is faulty, ALSA rate setting or the USB info sent by the device,
> but the problem needs to be fixed.

This device, and some others from M-Audio, do not really conform to the
USB Audio specification; there are interdependencies between the
playback, capture and digital interfaces that are not described in the
USB descriptors.

These devices will not be supported completely unless a separate driver
is written for them.


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