2 May
2003
2 May
'03
7:53 p.m.
Hallo,
CK hat gesagt: // CK wrote:
hmmm ... well in my experience pretty much any usb
audio device (2in
2out) that I tested so far just worked.
Well, I tested the Edirol UA-20 and it didn't work correctly (at
first), because it isn't following the standard fully. Clemens added a
quirk for it to ALSA, so now it should work, but I don't have it
anymore.
A lot of manufacturers actually make the devices not follow the
standard so that MS-Windows won't install its own standard drivers and
they can install theirs. This makes the workarounds in ALSA necessary.
To illustrate it, here are two quotes from alsa-kernel/usb/usbquirks.h:
* In a perfect world, this file would be empty.
[...]
/*
* Roland/RolandED/Edirol devices
*
* The USB MIDI Specification has been written by Roland,
* but a 100% conforming Roland device has yet to be found.
*/
ciao
--
Frank Barknecht _ ______footils.org__