I have an Audigy2 NX working under ALSA 1.0.2 (the latest 1.0.2 :), but it
is of course slightly imperfect in how it's controlled. Here are some
issues:
1. alsamixer is very confusing, with redundant labels (lots of "Speaker 2"
settings). Lots of trial and error to control the volume, but there are
still lots of mysteries. amixer output is somewhat helpful, but missing
some strings.
2. I downloaded the latest firmware under Windows that supposedly permits
USB 2.0 operation, but lsusb -v stills shows it as a 1.1 device. Am I
right in assuming that this has absolutely nothing to do with ALSA? Does
anyone have any pointers on making this a true USB 2.0 connection? That
would be fantastic.
Below is output from lsusb -v and amixer, if this is helpful to an ALSA
developer.
As for the audio quality, it's very nice. The electrical noise inside the
Shuttle box is nicely eliminated with an external device.
And thanks for any guidance.
-- John
-------
lsusb -v output:
Bus 005 Device 001: ID 0000:0000
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Root Hub
bDeviceProtocol 1
bMaxPacketSize0 8
idVendor 0x0000
idProduct 0x0000
bcdDevice 2.04
iManufacturer 3 Linux 2.4.22-26mdkcustom ehci_hcd
iProduct 2 Intel Corp. 82801EB USB2
iSerial 1 00:1d.7
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x40
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Root Hub
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type none
wMaxPacketSize 2
bInterval 12
Language IDs: (length=4)
0000 (null)((null))
Bus 004 Device 001: ID 0000:0000
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Root Hub
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0000
idProduct 0x0000
bcdDevice 0.00
iManufacturer 0
iProduct 2 USB UHCI Root Hub
iSerial 1 bc00
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x40
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Root Hub
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type none
wMaxPacketSize 8
bInterval 255
Language IDs: (length=4)
0000 (null)((null))
Bus 003 Device 001: ID 0000:0000
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Root Hub
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0000
idProduct 0x0000
bcdDevice 0.00
iManufacturer 0
iProduct 2 USB UHCI Root Hub
iSerial 1 b800
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x40
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Root Hub
bInterfaceProtocol 0
iInterface Config 0 descriptor too long, truncating
0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type none
wMaxPacketSize 8
bInterval 255
Language IDs: (length=4)
0000 (null)((null))
Bus 002 Device 001: ID 0000:0000
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Root Hub
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0000
idProduct 0x0000
bcdDevice 0.00
iManufacturer 0
iProduct 2 USB UHCI Root Hub
iSerial 1 b400
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x40
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Root Hub
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type none
wMaxPacketSize 8
bInterval 255
Language IDs: (length=4)
0000 (null)((null))
Bus 002 Device 004: ID 041e:3020 Creative Technology, Ltd
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 Interface
bDeviceSubClass 0 Default
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x041e Creative Technology, Ltd
idProduct 0x3020
bcdDevice 1.00
iManufacturer 1 Creative Technology Ltd
iProduct 2 SB Audigy 2 NX
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 1484
bNumInterfaces 3
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 10
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 317
bInCollection 2
baInterfaceNr( 0) 1
baInterfaceNr( 1) 2
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bNrChannels 8
wChannelConfig 0x063f
Left Front (L)
Right Front (R)
Center Front (C)
Low Freqency Enhancement (LFE)
Left Surround (LS)
Right Surround (RS)
Side Left (SL)
Side Right (SR)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 4
wTerminalType 0x0602 Digital Audio Interface
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 6
bSourceID 4
bControlSize 2
bmaControls( 0) 0x01
bmaControls( 1) 0x00
Mute
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
iFeature 0
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 7
wTerminalType 0x0603 Line Connector
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 8
bSourceID 7
bControlSize 2
bmaControls( 0) 0x01
bmaControls( 1) 0x00
Mute
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
iFeature 0
AudioControl Interface Descriptor:
bLength 25
bDescriptorType 36
bDescriptorSubtype 4 (MIXER_UNIT)
bUnitID 16
bNrInPins 3
baSourceID( 0) 1
baSourceID( 1) 6
baSourceID( 2) 8
bNrChannels 8
wChannelConfig 0x063f
Left Front (L)
Right Front (R)
Center Front (C)
Low Freqency Enhancement (LFE)
Left Surround (LS)
Right Surround (RS)
Side Left (SL)
Side Right (SR)
iChannelNames 0
bmControls 0x00
bmControls 0x00
bmControls 0x00
iMixer 0
junk at descriptor end: 00 00 00 00 00 00 00 00 00
AudioControl Interface Descriptor:
bLength 25
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 18
bSourceID 16
bControlSize 2
bmaControls( 0) 0x01
bmaControls( 1) 0x00
Mute
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
iFeature 0
AudioControl Interface Descriptor:
bLength 15
bDescriptorType 36
bDescriptorSubtype 8 (EXTENSION_UNIT)
bUnitID 23
wExtensionCode 0
bNrPins 1
baSourceID( 0) 18
bNrChannels 6
wChannelConfig 63
Left Front (L)
Right Front (R)
Center Front (C)
Low Freqency Enhancement (LFE)
Left Surround (LS)
Right Surround (RS)
iChannelNames 0
bControlSize 1
bmControls( 0) 0x01
Enable Processing
iExtension 0
AudioControl Interface Descriptor:
bLength 15
bDescriptorType 36
bDescriptorSubtype 8 (EXTENSION_UNIT)
bUnitID 17
wExtensionCode 0
bNrPins 1
baSourceID( 0) 18
bNrChannels 2
wChannelConfig 3
Left Front (L)
Right Front (R)
iChannelNames 0
bControlSize 1
bmControls( 0) 0x01
Enable Processing
iExtension 0
AudioControl Interface Descriptor:
bLength 15
bDescriptorType 36
bDescriptorSubtype 8 (EXTENSION_UNIT)
bUnitID 21
wExtensionCode 0
bNrPins 1
baSourceID( 0) 18
bNrChannels 2
wChannelConfig 1536
Side Left (SL)
Side Right (SR)
iChannelNames 0
bControlSize 1
bmControls( 0) 0x01
Enable Processing
iExtension 0
AudioControl Interface Descriptor:
bLength 15
bDescriptorType 36
bDescriptorSubtype 8 (EXTENSION_UNIT)
bUnitID 27
wExtensionCode 0
bNrPins 1
baSourceID( 0) 1
bNrChannels 2
wChannelConfig 3
Left Front (L)
Right Front (R)
iChannelNames 0
bControlSize 1
bmControls( 0) 0x01
Enable Processing
iExtension 0
AudioControl Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 28
bSourceID 23
bControlSize 1
bmaControls( 0) 0x01
Mute
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
iFeature 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 19
wTerminalType 0x0301 Speaker
bAssocTerminal 0
bSourceID 28
iTerminal 0
AudioControl Interface Descriptor:
bLength 8
bDescriptorType 36
bDescriptorSubtype 5 (SELECTOR_UNIT)
bUnitID 31
bNrInPins 2
baSource( 0) 17
baSource( 1) 21
iSelector 0
AudioControl Interface Descriptor:
bLength 10
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 30
bSourceID 31
bControlSize 1
bmaControls( 0) 0x01
Mute
bmaControls( 0) 0x00
bmaControls( 0) 0x00
iFeature 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 20
wTerminalType 0x0302 Headphones
bAssocTerminal 0
bSourceID 30
iTerminal 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 5 (SELECTOR_UNIT)
bUnitID 29
bNrInPins 3
baSource( 0) 17
baSource( 1) 27
baSource( 2) 4
iSelector 0
AudioControl Interface Descriptor:
bLength 10
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 22
bSourceID 29
bControlSize 1
bmaControls( 0) 0x01
Mute
bmaControls( 0) 0x00
bmaControls( 0) 0x00
iFeature 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 24
wTerminalType 0x0602 Digital Audio Interface
bAssocTerminal 0
bSourceID 22
iTerminal 0
AudioControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 11
bSourceID 17
bControlSize 2
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 0) 0x00
bmaControls( 1) 0x00
bmaControls( 0) 0x00
bmaControls( 1) 0x00
iFeature 0
AudioControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 12
bSourceID 7
bControlSize 2
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 0) 0x00
bmaControls( 1) 0x00
bmaControls( 0) 0x00
bmaControls( 1) 0x00
iFeature 0
AudioControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 13
bSourceID 4
bControlSize 2
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 0) 0x00
bmaControls( 1) 0x00
bmaControls( 0) 0x00
bmaControls( 1) 0x00
iFeature 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 5 (SELECTOR_UNIT)
bUnitID 14
bNrInPins 3
baSource( 0) 12
baSource( 1) 13
baSource( 2) 11
iSelector 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 15
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 14
iTerminal 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type none
wMaxPacketSize 8
bInterval 10
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 1
bDelay 0 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 22050
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 92
bInterval 1
bRefresh 0
bSynchAddress 129
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type none
wMaxPacketSize 3
bInterval 1
bRefresh 5
bSynchAddress 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 2
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 1
bDelay 0 frames
wFormatTag 0 TYPE_I_UNDEFINED
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 44100
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 180
bInterval 1
bRefresh 0
bSynchAddress 129
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type none
wMaxPacketSize 3
bInterval 1
bRefresh 5
bSynchAddress 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 3
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 1
bDelay 0 frames
wFormatTag 0 TYPE_I_UNDEFINED
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 3
bBitResolution 24
bSamFreqType 1 Discrete
tSamFreq[ 0] 44100
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 270
bInterval 1
bRefresh 0
bSynchAddress 129
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type none
wMaxPacketSize 3
bInterval 1
bRefresh 5
bSynchAddress 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 4
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 1
bDelay 0 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 196
bInterval 1
bRefresh 0
bSynchAddress 129
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type none
wMaxPacketSize 3
bInterval 1
bRefresh 5
bSynchAddress 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 5
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 1
bDelay 0 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 3
bBitResolution 24
bSamFreqType 1 Discrete
tSamFreq[ 0] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 294
bInterval 1
bRefresh 0
bSynchAddress 129
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type none
wMaxPacketSize 3
bInterval 1
bRefresh 5
bSynchAddress 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 6
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 1
bDelay 0 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 96000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 388
bInterval 1
bRefresh 0
bSynchAddress 129
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type none
wMaxPacketSize 3
bInterval 1
bRefresh 5
bSynchAddress 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 7
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 1
bDelay 0 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 3
bBitResolution 24
bSamFreqType 1 Discrete
tSamFreq[ 0] 96000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 582
bInterval 1
bRefresh 0
bSynchAddress 129
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type none
wMaxPacketSize 3
bInterval 1
bRefresh 5
bSynchAddress 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 8
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 1
bDelay 0 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 4
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 22050
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 184
bInterval 1
bRefresh 0
bSynchAddress 129
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type none
wMaxPacketSize 3
bInterval 1
bRefresh 5
bSynchAddress 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 9
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 1
bDelay 0 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 4
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 392
bInterval 1
bRefresh 0
bSynchAddress 129
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type none
wMaxPacketSize 3
bInterval 1
bRefresh 5
bSynchAddress 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 10
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 1
bDelay 0 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 4
bSubframeSize 3
bBitResolution 24
bSamFreqType 1 Discrete
tSamFreq[ 0] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 588
bInterval 1
bRefresh 0
bSynchAddress 129
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type none
wMaxPacketSize 3
bInterval 1
bRefresh 5
bSynchAddress 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 11
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 1
bDelay 0 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 6
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 22050
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 276
bInterval 1
bRefresh 0
bSynchAddress 129
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type none
wMaxPacketSize 3
bInterval 1
bRefresh 5
bSynchAddress 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 12
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 1
bDelay 0 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 6
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 588
bInterval 1
bRefresh 0
bSynchAddress 129
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type none
wMaxPacketSize 3
bInterval 1
bRefresh 5
bSynchAddress 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 13
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 1
bDelay 0 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 6
bSubframeSize 3
bBitResolution 24
bSamFreqType 1 Discrete
tSamFreq[ 0] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 882
bInterval 1
bRefresh 0
bSynchAddress 129
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
descriptor length past end: 09 05 81 01 03 00
Language IDs: (length=4)
0409 English(US)
Bus 001 Device 001: ID 0000:0000
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Root Hub
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0000
idProduct 0x0000
bcdDevice 0.00
iManufacturer 0
iProduct 2 USB UHCI Root Hub
iSerial 1 b000
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x40
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Root Hub
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type none
wMaxPacketSize 8
bInterval 255
Language IDs: (length=4)
0000 (null)((null))
Bus 001 Device 003: ID 0846:4110 NetGear, Inc.
Language IDs: none (invalid length string descriptor bf; len=0)
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 Interface
bDeviceSubClass 0 Default
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0846 NetGear, Inc.
idProduct Warning: invalid config descriptor
0x4110
bcdDevice 1.32
iManufacturer 0
iProduct 0
iSerial 0
bNumConfigurations 1
Language IDs: none (invalid length string descriptor bf; len=0)
----
amixer output:
Simple mixer control 'Headphone',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Headphone Playback Source',0
Capabilities:
Mono:
Simple mixer control 'PCM',0
Capabilities: cvolume
Capture channels: Mono
Limits: Capture 0 - 46
Mono: Capture 40 [87%]
Simple mixer control 'PCM Capture Source',0
Capabilities:
Mono:
Simple mixer control 'PCM',1
Capabilities: cvolume
Capture channels: Mono
Limits: Capture 0 - 46
Mono: Capture 40 [87%]
Simple mixer control 'PCM',2
Capabilities: cvolume
Capture channels: Mono
Limits: Capture 0 - 46
Mono: Capture 39 [85%]
Simple mixer control 'Digital In',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'Digital In Playback Source',0
Capabilities:
Mono:
Simple mixer control 'Speaker',0
Capabilities: pvolume pswitch pswitch-joined
Playback channels: Front Left - Front Right
Limits: Playback 0 - 207
Front Left: Playback 187 [90%] [on]
Front Right: Playback 187 [90%] [on]
Simple mixer control 'Speaker',1
Capabilities: pvolume pswitch pswitch-joined
Playback channels: Front Left - Front Right
Limits: Playback 0 - 231
Front Left: Playback 207 [90%] [on]
Front Right: Playback 207 [90%] [on]
Simple mixer control 'Speaker',2
Capabilities: pvolume pswitch pswitch-joined
Playback channels: Front Left - Front Right - Front Center - Rear Left -
Rear Right - Woofer - ? - ?
Limits: Playback 0 - 183
Front Left: Playback 131 [72%] [on]
Front Right: Playback 131 [72%] [on]
Front Center: Playback 159 [87%] [on]
Rear Left: Playback 159 [87%] [on]
Rear Right: Playback 159 [87%] [on]
Woofer: Playback 159 [87%] [on]
?: Playback 159 [87%] [on]
?: Playback 159 [87%] [on]
Simple mixer control 'Speaker',3
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
-------------------------------------------------------
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