[alsa-devel] Edirol UA-20 in advanced mode

Clemens Ladisch clemens at ladisch.de
Fri Jan 30 14:10:13 CET 2009

nick83ola wrote:
> I have an old edirol UA-20 that not work with advanced driver, or perhaps I
> see it, i can send midi in and out from it but audio don't work.
> ...
> damnick at damnick-nb:~$ dmesg|tail
> [ 1287.914930] cannot submit datapipe for urb 0, error -90: internal error

This is a bug in the USB audio driver; it uses packets that are too big
for the device (the code for the AUDIO_FIXED_ENDPOINT quirk doesn't look
at wMaxPacketSize).  I'll need to change the driver.

Best regards,

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