I was able to use the Pi as a Midi synthesizer for a Midiplus AKM320 controller using fluidsynth and aconnect. Then I got a larger Roland A49 midi keyboard, but am unable to get this to work. It shows up with lsusb:
Bus 001 Device 004: ID 0582:0156 Roland Corp.
It has no strange dmesg output:
[ 3.261803] usb 1-1.3: new full-speed USB device number 4 using dwc_otg
[ 3.377288] usb 1-1.3: New USB device found, idVendor=0582, idProduct=0156
[ 3.386801] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 3.396664] usb 1-1.3: Product: A-Series Keyboard
[ 3.403869] usb 1-1.3: Manufacturer: Roland
Problem is that it does NOT show up with aconnect -i.
The Roland still works with Ubuntu on my laptop.
About my Raspberry Pi:
$ uname -a
Linux raspberrypi 3.6.11+ #538 PREEMPT Fri Aug 30 20:42:08 BST 2013 armv6l GNU/Linux
$ cat /etc/issue
Raspbian GNU/Linux 7
How do I get this Roland keyboard to work?
(Disclaimer: I am not affiliated with the manufacturer with the same name)
update:
Looking at this SO question I tried to load module snd-seq-midi, but it made no improvement.
This midi keyboard is not listed in /proc/asound/cards and neither by amidi -l .
snd-usb-audiomodule loaded?modprobe, which also loaded modules snd_hwdep, snd_usbmidi_lib, snd_pcm and snd. But the Roland is still not recognized withaconnect -i