Hi
I recently acquired a Roland EXR 5s usb midi keyboard.
I'm keen to use the ALSA usb midi driver on my 2.6
kernel Gentoo Linux system using current ALSA modules.
For some time now I have seen that support for the EXR
is shaded gray on ALSA's supported hardware list. Not
sure what this means, but I'm guessing there is
partial support?
I can see the device with lsusb -v:
Bus 001 Device 002: ID 0582:0060 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 0x0060
bcdDevice 1.00
iManufacturer 1 Roland
iProduct 2 EXR
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 149
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 3
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 1
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 3
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
I have the snd-usb-audio module loaded:
lsmod | grep usb
snd_usb_audio 48384 0
snd_usb_lib 10432 1 snd_usb_audio
snd_pcm 47332 3
snd_usb_audio,snd_pcm_oss,snd_cmipci
snd_hwdep 5956 2
snd_usb_audio,snd_opl3_lib
snd_rawmidi 14272 3
snd_usb_lib,snd_seq_midi,snd_mpu401_uart
snd 31368 14
snd_usb_audio,snd_usb_lib,snd_pcm_oss,snd_mixer_oss,snd_seq_oss,snd_seq,snd_cmipci,snd_pcm,snd_opl3_lib,snd_timer,snd_hwdep,snd_mpu401_uart,snd_rawmidi,snd_seq_device
usb_storage 55936 0
usbhid 31936 0
usbcore 80548 9
snd_usb_audio,snd_usb_lib,sl811_hcd,ohci_hcd,uhci_hcd,usb_storage,usbhid,ehci_hcd
But ALSA doesn't seem to recognize the device:
cat /proc/asound/cards
0 [CMI8738 ]: CMI8738 - C-Media PCI CMI8738
C-Media PCI CMI8738 (model 37)
at 0x9800, irq 10
amidi -l
Dir Device Name
IO hw:0,0 MPU-401 MIDI 0-0
(hw:0,0 is the onboard gameport MPU401)
I saw a comment in the kernel's usbquirks.h:
/* TODO: add Roland EXR support */
But if support is incomplete, I'd like to learn how
can I help to accelerate this process? (I'm not a
programmer, but I have access to the hardware and am
willing to do some testing on my system).
When replying, please CC me, as I am not subscribed to
the list.
Season's greetings and thanks for a great sound
system.
Andre
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