[LAU] Roland Integra-7 and Alsa 1.0.28

[Mirko Horstmann]

On 08.12.2014 09:35, Clemens Ladisch wrote:
> It's possible that the device needs some vendor-specific command from
> the driver to enable this, or that it needs both playback and capture
> streams.  Does playback work (with "Ext Part Source Select")?

Playback looks similar, and there is no sound:

mir at robotnik:~/Desktop$ aplay -D hw:INTEGRA7 
Zelda_Violin_Duet-_Lindsey_Stirling_3244.wav
Playing WAVE 'Zelda_Violin_Duet-_Lindsey_Stirling_3244.wav' : Signed 32 
bit Little Endian, Rate 44100 Hz, Stereo
aplay: pcm_write:1939: write error: Input/output error

> Please show the output of "lsusb -v" for this device.

Bus 002 Device 007: ID 0582:015b Roland Corp. INTEGRA-7
Device Descriptor:
   bLength                18
   bDescriptorType         1
   bcdUSB               2.00
   bDeviceClass          255 Vendor Specific Class
   bDeviceSubClass         0
   bDeviceProtocol       255
   bMaxPacketSize0        64
   idVendor           0x0582 Roland Corp.
   idProduct          0x015b INTEGRA-7
   bcdDevice            1.00
   iManufacturer           1
   iProduct                2
   iSerial                 0
   bNumConfigurations      1
   Configuration Descriptor:
     bLength                 9
     bDescriptorType         2
     wTotalLength          176
     bNumInterfaces          4
     bConfigurationValue     1
     iConfiguration          0
     bmAttributes         0xc0
       Self Powered
     MaxPower                0mA
     Interface Descriptor:
       bLength                 9
       bDescriptorType         4
       bInterfaceNumber        0
       bAlternateSetting       0
       bNumEndpoints           0
       bInterfaceClass       255 Vendor Specific Class
       bInterfaceSubClass    255 Vendor Specific Subclass
       bInterfaceProtocol      0
       iInterface              0
     Interface Descriptor:
       bLength                 9
       bDescriptorType         4
       bInterfaceNumber        1
       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        1
       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 04 18 01 44 ac 00
       Endpoint Descriptor:
         bLength                 7
         bDescriptorType         5
         bEndpointAddress     0x0d  EP 13 OUT
         bmAttributes            5
           Transfer Type            Isochronous
           Synch Type               Asynchronous
           Usage Type               Data
         wMaxPacketSize     0x0038  1x 56 bytes
         bInterval               1
     Interface Descriptor:
       bLength                 9
       bDescriptorType         4
       bInterfaceNumber        2
       bAlternateSetting       0
       bNumEndpoints           0
       bInterfaceClass       255 Vendor Specific Class
       bInterfaceSubClass      2
       bInterfaceProtocol      1
       iInterface              0
     Interface Descriptor:
       bLength                 9
       bDescriptorType         4
       bInterfaceNumber        2
       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 04 18 01 44 ac 00
       Endpoint Descriptor:
         bLength                 7
         bDescriptorType         5
         bEndpointAddress     0x8e  EP 14 IN
         bmAttributes           37
           Transfer Type            Isochronous
           Synch Type               Asynchronous
           Usage Type               Implicit feedback Data
         wMaxPacketSize     0x0038  1x 56 bytes
         bInterval               1
     Interface Descriptor:
       bLength                 9
       bDescriptorType         4
       bInterfaceNumber        3
       bAlternateSetting       0
       bNumEndpoints           2
       bInterfaceClass       255 Vendor Specific Class
       bInterfaceSubClass      3
       bInterfaceProtocol      0
       iInterface              0
       ** UNRECOGNIZED:  06 24 f1 02 02 02
       Endpoint Descriptor:
         bLength                 7
         bDescriptorType         5
         bEndpointAddress     0x03  EP 3 OUT
         bmAttributes            2
           Transfer Type            Bulk
           Synch Type               None
           Usage Type               Data
         wMaxPacketSize     0x0200  1x 512 bytes
         bInterval               1
       Endpoint Descriptor:
         bLength                 7
         bDescriptorType         5
         bEndpointAddress     0x84  EP 4 IN
         bmAttributes            2
           Transfer Type            Bulk
           Synch Type               None
           Usage Type               Data
         wMaxPacketSize     0x0200  1x 512 bytes
         bInterval               0
     Interface Descriptor:
       bLength                 9
       bDescriptorType         4
       bInterfaceNumber        3
       bAlternateSetting       1
       bNumEndpoints           2
       bInterfaceClass       255 Vendor Specific Class
       bInterfaceSubClass      3
       bInterfaceProtocol      0
       iInterface              0
       Endpoint Descriptor:
         bLength                 7
         bDescriptorType         5
         bEndpointAddress     0x03  EP 3 OUT
         bmAttributes            2
           Transfer Type            Bulk
           Synch Type               None
           Usage Type               Data
         wMaxPacketSize     0x0200  1x 512 bytes
         bInterval               1
       Endpoint Descriptor:
         bLength                 7
         bDescriptorType         5
         bEndpointAddress     0x85  EP 5 IN
         bmAttributes            3
           Transfer Type            Interrupt
           Synch Type               None
           Usage Type               Data
         wMaxPacketSize     0x0200  1x 512 bytes
         bInterval               1