Dear Sir or Madamm
I am contacting you in order to report a problem with my external soundcard.
The manufacturer is Infrasonic model UAX2.
This soundcard is recognized by the operating system but it is not by ALSA like
others.
I would like to know if you can help me with that. I attach a copy of "dmesg"
command as following
"[32650.373269] usb 1-1.4: new high-speed USB device number 11 using ehci-pci
[32650.482710] usb 1-1.4: New USB device found, idVendor=1a4e, idProduct=7022,
bcdDevice= 1.00
[32650.482715] usb 1-1.4: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[32650.482717] usb 1-1.4: Product: UAX2
[32650.482719] usb 1-1.4: Manufacturer: INFRASONIC
[32650.482721] usb 1-1.4: SerialNumber: no serial number"
Atferward I put a copy of "lsusb -v" command as following too:
"Bus 001 Device 010: ID 1a4e:7022 INFRASONIC UAX2
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 255 Vendor Specific Class
bDeviceSubClass 255 Vendor Specific Subclass
bDeviceProtocol 255 Vendor Specific Protocol
bMaxPacketSize0 64
idVendor 0x1a4e
idProduct 0x7022
bcdDevice 1.00
iManufacturer 1 INFRASONIC
iProduct 2 UAX2
iSerial 3 no serial number
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0048
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 480mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 4
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x004e 1x 78 bytes
bInterval 1
bRefresh 0
bSynchAddress 0
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x004e 1x 78 bytes
bInterval 1
bRefresh 0
bSynchAddress 0
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 4
bRefresh 0
bSynchAddress 0
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 4
bRefresh 0
bSynchAddress 0
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 255 Vendor Specific Class
bDeviceSubClass 255 Vendor Specific Subclass
bDeviceProtocol 255 Vendor Specific Protocol
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)"
It is clean that the manufacturer doesn't provide a GNU/Linux driver. However I
hoped to sort this absent with ALSA.
I hope that you can help me or give and advice about that.
Yours faithfully
Emanuel
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