Erich Kitzmüller wrote:
> On Tuesday 20 January 2004 08:59, Clemens Ladisch wrote:
> > What messages appear in /var/log/messages when you plug the device in?
>
> Following is the output of Mandrake (Knoppix doesn't output anything in
> /var/log/messages); as you can see, currently usb-midi is not blacklisted.
>
> kernel: hub.c: new USB device 00:04.2-1.3, assigned address 5
> kernel: usb.c: USB device 5 (vend/prod 0x582/0x52) is not claimed by any active
> driver.
> /etc/hotplug/usb.agent: Setup snd-usb-audio usb-midi for USB product 582/52/200
> kernel: usb.c: registered new driver snd-usb-audio
> kernel: usb.c: registered new driver midi
> kernel: usb-midi: Found MIDISTREAMING on dev 0582:0052, iface 0
> ...
It's interesting that the ALSA driver is loaded first, but doesn't
want to handle the device.
> > Please post the output of "lsusb -v".
>
> ...
> bNumInterfaces 1
> ...
> bInterfaceClass 1 Audio
> bInterfaceSubClass 3 Non Streaming
> bInterfaceProtocol 0
This device doesn't have an Audio Control Interface, which is a clear
violation of the USB Audio Specification.
You have to apply the following patch, and then recompile ALSA, to
make it work:
Index: alsa-kernel/usb/usbquirks.h
===================================================================
RCS file: /cvsroot/alsa/alsa-kernel/usb/usbquirks.h,v
retrieving revision 1.25
diff -u -r1.25 usbquirks.h
--- alsa-kernel/usb/usbquirks.h 19 Jan 2004 19:33:46 -0000 1.25
+++ alsa-kernel/usb/usbquirks.h 20 Jan 2004 15:08:18 -0000
@@ -501,6 +501,15 @@
}
}
},
+{
+ USB_DEVICE(0x0582, 0x0052),
+ .driver_info = (unsigned long) & (const snd_usb_audio_quirk_t) {
+ .vendor_name = "EDIROL",
+ .product_name = "UM-1SX",
+ .ifnum = 0,
+ .type = QUIRK_MIDI_STANDARD_INTERFACE
+ }
+},
/* Midiman/M-Audio devices */
{
HTH
Clemens
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