[PlanetCCRMA] midisport 2x2 only opening 1 port ??

[Jim Ruxton]

I finally got it to work. All I had to do was add another command:

aconnect 72:1 80:0

Thanks again for the help Frank and Fernando.

Jim

> Thanks for this Fernando. I'm getting closer.. As suggested I did a:
>
> "modprobe snd-virmidi snd_index=2"
>
> now with the midisport 2x2 connected if I do :
>
> "aconnect -lo "
>
> I get :
>
> client 72: 'External MIDI 1' [type=kernel]
> 0 'Midisport 2x2 Port 0'
> 1 'Midisport 2x2 Port 1'
> client 80: 'Virtual Raw MIDI 2-0' [type=kernel]
> 0 'VirMIDI 2-0 '
> client 81: 'Virtual Raw MIDI 2-1' [type=kernel]
> 0 'VirMIDI 2-1 '
> client 82: 'Virtual Raw MIDI 2-2' [type=kernel]
> 0 'VirMIDI 2-2 '
> client 83: 'Virtual Raw MIDI 2-3' [type=kernel]
> 0 'VirMIDI 2-3 '
>
> Then I connect the second midisport port to the first vitual port:
>
> "aconnect 80:0 72:1"
>
> Then I start pd with:
>
> "pd -mididev 2,3 " with no complaints
>
> I can send data out the first and second port ie. channel 1 and 17 but 
> only get data into the first port. I test this by connecting midi port 
> A out to midi port A in and midi port B out to midi port Bin . So I am 
> very close, it is just the 2nd input port that isn't registering data 
> even though I am getting lights flashing on this port. Any thoughts?
>
> Jim
>
>
>
>
>>> My Midisport 2x2 seems to be hotplugging ok but I only get 1 port ie 
>>> if I do" pd -mididev 2,3" only port 2 shows up. I've tried other 
>>> combos like
>>> "pd -mididev 1,2" etc. but only port 2 seems to work.
>>
>>
>> Pd still uses midi oss emulation, it does not have a native alsa midi
>> driver so it does not see the second (or third or more) port. I'm
>> including a post from Clemens Ladish to alsa-users about this problem
>> with a workaround.
>> -- Fernando
>>
>> Re: [Alsa-user] More Midisport 2x2 troubles
>>
>> * From: Clemens Ladisch
>> * Subject: Re: [Alsa-user] More Midisport 2x2 troubles
>> * Date: Thu, 03 Apr 2003 00:04:12 -0800
>>
>> Ivica Bukvic wrote:
>>
>>
>>> The firmware loads fine, and the midisport is properly recognized. The
>>> problem is that I only have one MIDI port available even though this
>>> is the 2x2 version (I had 2 ports in Mdk 9.0, usually /dev/midi(0) and
>>> /dev/midi1). Now I only have /dev/midi.
>>>
>>> The interesting thing is that the /proc/asound/card1/midi0 lists the
>>> following:
>>>
>>> Output 0
>>> Tx bytes : 0
>>> Output 1
>>> Tx bytes : 0
>>> Input 0
>>> Rx bytes : 5 (this number changes, most likely because
>>> it's the only port that has anything hooked up to it)
>>> Input 1
>>> Rx bytes : 0
>>>
>>> So, it seems that there are 2 I and 2 O ports, but they are all
>>> allocated within the midi0 device according to the proc stuff (or
>>> /dev/midi1 according to the dev stuff).
>>>
>>
>> For multiport USB MIDI interfaces, the ports are subdevices of one midi
>> device. This isn't a problem with programs using the ALSA API, but when
>> you want to use the OSS-compatible /dev/midiX ports, you cannot access
>> any subdevices other than the first directly.
>>
>> The mapping of OSS MIDI devices to ALSA MIDI devices is as follows:
>> /dev/midi0 -> card 0, device 0, subdevice 0
>> /dev/amidi0 -> card 0, device 1, subdevice 0
>> /dev/midi1 -> card 1, device 0, subdevice 0
>> /dev/amidi1 -> card 1, device 1, subdevice 0
>> /dev/midi2 -> card 2, device 0, subdevice 0
>> /dev/amidi2 -> card 2, device 1, subdevice 0
>> ...
>>
>>
>>
>>> If this is the case, then how do I access the second port.
>>>
>>
>> You can load the snd-virmidi driver to create a virtual soundcard having
>> its own MIDI device, and then connect this port to the 2x2's second MIDI
>> port (with aconnect).
>>
>>
>>
>>> In this situation the hdsp is not in use, so midisport assumes the 2nd
>>> card position.
>>> ...
>>> options snd-usb-audio vid=0x763 pid=0x1001 index=2
>>>
>>
>> It shouldn't, because the above options line tells the driver to load at
>> index 2. And if you'd use 0x1110 as product ID, it actually would. ;-)
>> (0x1001 is the ID of the device without firmware.)
>>
>> HTH
>> Clemens
>>
>>
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>>
>>
>>
>>
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