Messages in this thread | | | Date | Wed, 28 Dec 2005 00:19:31 +0100 | From | Sebastian Reichelt <> | Subject | TerraTec MIDI HUBBLE USB quirk |
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Hello!
The TerraTec MIDI HUBBLE USB device provides two MIDI IN and OUT ports, but it seems to lack the correct interface class value (see attached output of lsusb -v). I thought this could be fixed by adding the following to sound/usb/usbquirks.h:
{ USB_DEVICE_VENDOR_SPEC(0x0ccd, 0x0032), .driver_info = (unsigned long) & (const snd_usb_audio_quirk_t) { .vendor_name = "TerraTec Producer", .product_name = "MIDI HUBBLE", .ifnum = 0, .type = QUIRK_MIDI_STANDARD_INTERFACE } },
But the USB subsystem still doesn't know it can use the snd_usb_audio driver for this device (e.g. shown by usbmodules), and it is not registered as an ALSA card. Is there anything I have to do in addition to this, or did I do something wrong? The files modules.alias and modules.usbmap got updated correctly, but I don't know who reads them at what time.
The strangest thing is that it worked on one day, even though I had not done anything special yet.
I hope you can help me. Thank you very much in advance.
BTW: I thought about posting this in the linux-sound mailing list, but it seems to be dead. Posts are almost never answered, including a post I made about a solution to another sound problem (http://marc.theaimsgroup.com/?l=linux-sound&m=113261865703607&w=2). (Since then, a few people who have the same problem have contacted me; all of them would like the fix to be integrated into the kernel.)
-- Sebastian Reichelt
Bus 002 Device 003: ID 0ccd:0032 TerraTec Electronic GmbH Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x0ccd TerraTec Electronic GmbH idProduct 0x0032 bcdDevice 1.08 iManufacturer 1 TerraTec Producer iProduct 2 MIDI HUBBLE iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 54 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xc0 Self Powered MaxPower 98mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 4 bInterfaceClass 0 (Defined at Interface level) bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 9 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 bRefresh 0 bSynchAddress 0 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 0 bRefresh 0 bSynchAddress 0 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 0 bRefresh 0 bSynchAddress 0 Endpoint Descriptor: bLength 9 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 bRefresh 0 bSynchAddress 0 Device Status: 0x0000 (Bus Powered)
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