tth@plop:~/Essais$ uname -a
Linux plop 2.6.32-27-generic #49-Ubuntu SMP Wed Dec 1 23:52:12 UTC 2010 i686
GNU/Linux
tth@plop:~/Essais$ lsusb
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 002: ID 1bcf:0007 Sunplus Innovation Technology Inc. 
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 0582:00e9 Roland Corp. 
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 003: ID 064e:a102 Suyin Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub



tth@plop:~/Essais$ lsusb -d 0582: -v

Bus 002 Device 002: ID 0582:00e9 Roland Corp. 
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass          255 Vendor Specific Class
  bDeviceSubClass         0 
  bDeviceProtocol       255 
  bMaxPacketSize0         8
  idVendor           0x0582 Roland Corp.
  idProduct          0x00e9 
  bcdDevice            1.00
  iManufacturer           1 
  iProduct                2 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength          115
    bNumInterfaces          2
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              200mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      2 
      bInterfaceProtocol      2 
      iInterface              0 
      ** UNRECOGNIZED:  06 24 f1 01 00 00
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      2 
      bInterfaceProtocol      2 
      iInterface              0 
      ** UNRECOGNIZED:  07 24 01 01 00 01 00
      ** UNRECOGNIZED:  0b 24 02 01 02 03 18 01 44 ac 00
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            9
          Transfer Type            Isochronous
          Synch Type               Adaptive
          Usage Type               Data
        wMaxPacketSize     0x0120  1x 288 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      2 
      bInterfaceProtocol      1 
      iInterface              0 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      2 
      bInterfaceProtocol      1 
      iInterface              0 
      ** UNRECOGNIZED:  07 24 01 07 00 01 00
      ** UNRECOGNIZED:  0b 24 02 01 02 03 18 01 44 ac 00
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x0120  1x 288 bytes
        bInterval               1
cannot read device status, Operation not permitted (1)



tth@plop:~/Essais$ cat /proc/asound/cards
 0 [Intel          ]: HDA-Intel - HDA Intel
                      HDA Intel at 0x58200000 irq 16


tth@plop:~/Essais$ lsmod | grep snd
snd_hda_codec_realtek   203344  1 
snd_hda_intel          22005  2 
snd_hda_codec          74201  2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep               5412  1 snd_hda_codec
snd_pcm_oss            35308  0 
snd_mixer_oss          13746  1 snd_pcm_oss
snd_pcm                70694  3 snd_hda_intel,snd_hda_codec,snd_pcm_oss
snd_seq_dummy           1338  0 
snd_seq_oss            26722  0 
snd_seq_midi            4557  0 
snd_rawmidi            19056  1 snd_seq_midi
snd_seq_midi_event      6003  2 snd_seq_oss,snd_seq_midi
snd_seq                47263  7
snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_timer              19098  2 snd_pcm,snd_seq
snd_seq_device          5700  5
snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
snd                    54180  17
snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore               6620  1 snd
snd_page_alloc          7076  2 snd_hda_intel,snd_pcm
tth@plop:~/Essais$ locate snd | grep ua
/lib/modules/2.6.32-21-generic/kernel/sound/drivers/mpu401/snd-mpu401-uart.ko
/lib/modules/2.6.32-23-generic/kernel/sound/drivers/mpu401/snd-mpu401-uart.ko
/lib/modules/2.6.32-24-generic/kernel/sound/drivers/mpu401/snd-mpu401-uart.ko
/lib/modules/2.6.32-25-generic/kernel/sound/drivers/mpu401/snd-mpu401-uart.ko
/lib/modules/2.6.32-26-generic/kernel/sound/drivers/mpu401/snd-mpu401-uart.ko
/lib/modules/2.6.32-27-generic/kernel/sound/drivers/mpu401/snd-mpu401-uart.ko
/usr/src/linux-headers-2.6.32-24-generic/include/config/snd/mpu401/uart.h
/usr/src/linux-headers-2.6.32-26-generic/include/config/snd/mpu401/uart.h
/usr/src/linux-headers-2.6.32-27-generic/include/config/snd/mpu401/uart.h