Frank Barknecht wrote:
> Frank Barknecht wrote:
> > /proc/bus/usb/devices:
> > P:  Vendor=0582 ProdID=0026 Rev= 1.01
> > S:  Manufacturer=Roland
> > S:  Product=EDIROL UA-20
>
> Now I found this in usbquirks.h:
>       USB_DEVICE_VENDOR_SPEC(0x0582, 0x0025),
>       .driver_info = (unsigned long) & (const snd_usb_audio_quirk_t) {
>               .vendor_name = "EDIROL",
>               .product_name = "UA-20",
>
> The prod here, 0x0025, is different than my ProdID, 0026. Could I just
> change usbquirks to read
>
>       USB_DEVICE_VENDOR_SPEC(0x0582, 0x0026),
>
> recommpile the modules and be fine???

Yes, this looks like a typo.

However, the USB interface for the MIDI ports should be number 3 (0-2 are
for the PCM audio part), but your device doesn't have interface #3:

> D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
> P:  Vendor=0582 ProdID=0026 Rev= 1.01
> S:  Manufacturer=Roland
> S:  Product=EDIROL UA-20
> C:* #Ifs= 3 Cfg#= 1 Atr=80 MxPwr=170mA
> I:  If#= 0 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=snd-usb-audio
> I:  If#= 1 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio
> I:  If#= 1 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio
> E:  Ad=01(O) Atr=09(Isoc) MxPS= 192 Ivl=1ms
> I:  If#= 2 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio
> I:  If#= 2 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio
> E:  Ad=82(I) Atr=05(Isoc) MxPS= 192 Ivl=1ms

This is strange. Does the MIDI port work in Windows?


Clemens




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