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找出USB设备

tag-icon • tag-icon usb usb-audio
找出USB设备

我有使用 USB 进行交互的硬件。它是一个USB声卡配置文件需要这样的：

devstr=1-1.3.1:1.0

LSSB看起来像这样：

Bus 001 Device 004: ID 0d8c:0012 C-Media Electronics, Inc.
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

我需要Bus 001 Device 004: ID 0d8c:0012 C-Media Electronics, Inc. to在配置文件中引用该设备。

更新 这是/var/日志/消息（重启后）

Nov 17 12:33:52 44249 kernel: [    3.658983] usb 1-1.2: New USB device found, idVendor=0d8c, idProduct=0012
Nov 17 12:33:52 44249 kernel: [    3.671869] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Nov 17 12:33:52 44249 kernel: [    3.685433] usb 1-1.2: Product: USB Audio Device
Nov 17 12:33:52 44249 kernel: [    3.694574] usb 1-1.2: Manufacturer: C-Media Electronics Inc.
Nov 17 12:33:52 44249 kernel: [    3.710586] input: C-Media Electronics Inc. USB Audio Device as /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.3/0003:0D8C:0012.0001/input/input0
Nov 17 12:33:52 44249 kernel: [    3.790955] hid-generic 0003:0D8C:0012.0001: input,hidraw0: USB HID v1.00 Device [C-Media Electronics Inc. USB Audio Device] on usb-3f980000.usb-1.2/input3

结束更新

更新2的输出lsusb -vd 0d8c:0012

root@44249:~# lsusb -vd 0d8c:0012

Bus 001 Device 004: ID 0d8c:0012 C-Media Electronics, Inc. 
Device Descriptor:
bLength                18
bDescriptorType         1
bcdUSB               1.10
bDeviceClass            0 (Defined at Interface level)
bDeviceSubClass         0 
bDeviceProtocol         0 
bMaxPacketSize0         8
idVendor           0x0d8c C-Media Electronics, Inc.
idProduct          0x0012 
bcdDevice            1.00
iManufacturer           1 C-Media Electronics Inc.
iProduct                2 USB Audio Device
iSerial                 0 
bNumConfigurations      1
Configuration Descriptor:
bLength                 9
bDescriptorType         2
wTotalLength          253
bNumInterfaces          4
bConfigurationValue     1
iConfiguration          0 
bmAttributes         0x80
  (Bus Powered)
MaxPower              100mA
Interface Descriptor:
  bLength                 9
  bDescriptorType         4
  bInterfaceNumber        0
  bAlternateSetting       0
  bNumEndpoints           0
  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          100
    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             2
    wChannelConfig     0x0003
      Left Front (L)
      Right Front (R)
    iChannelNames           0 
    iTerminal               0 
  AudioControl Interface Descriptor:
    bLength                12
    bDescriptorType        36
    bDescriptorSubtype      2 (INPUT_TERMINAL)
    bTerminalID             2
    wTerminalType      0x0201 Microphone
    bAssocTerminal          0
    bNrChannels             1
    wChannelConfig     0x0001
      Left Front (L)
    iChannelNames           0 
    iTerminal               0 
  AudioControl Interface Descriptor:
    bLength                 9
    bDescriptorType        36
    bDescriptorSubtype      3 (OUTPUT_TERMINAL)
    bTerminalID             6
    wTerminalType      0x0301 Speaker
    bAssocTerminal          0
    bSourceID               9
    iTerminal               0 
  AudioControl Interface Descriptor:
    bLength                 9
    bDescriptorType        36
    bDescriptorSubtype      3 (OUTPUT_TERMINAL)
    bTerminalID             7
    wTerminalType      0x0101 USB Streaming
    bAssocTerminal          0
    bSourceID               8
    iTerminal               0 
  AudioControl Interface Descriptor:
    bLength                 7
    bDescriptorType        36
    bDescriptorSubtype      5 (SELECTOR_UNIT)
    bUnitID                 8
    bNrInPins               1
    baSource( 0)           10
    iSelector               0 
  AudioControl Interface Descriptor:
    bLength                10
    bDescriptorType        36
    bDescriptorSubtype      6 (FEATURE_UNIT)
    bUnitID                 9
    bSourceID              15
    bControlSize            1
    bmaControls( 0)      0x01
      Mute Control
    bmaControls( 1)      0x02
      Volume Control
    bmaControls( 2)      0x02
      Volume Control
    iFeature                0 
  AudioControl Interface Descriptor:
    bLength                 9
    bDescriptorType        36
    bDescriptorSubtype      6 (FEATURE_UNIT)
    bUnitID                10
    bSourceID               2
    bControlSize            1
    bmaControls( 0)      0x43
      Mute Control
      Volume Control
      Automatic Gain Control
    bmaControls( 1)      0x00
    iFeature                0 
  AudioControl Interface Descriptor:
    bLength                 9
    bDescriptorType        36
    bDescriptorSubtype      6 (FEATURE_UNIT)
    bUnitID                13
    bSourceID               2
    bControlSize            1
    bmaControls( 0)      0x03
      Mute Control
      Volume Control
    bmaControls( 1)      0x00
    iFeature                0 
  AudioControl Interface Descriptor:
    bLength                13
    bDescriptorType        36
    bDescriptorSubtype      4 (MIXER_UNIT)
    bUnitID                15
    bNrInPins               2
    baSourceID( 0)          1
    baSourceID( 1)         13
    bNrChannels             2
    wChannelConfig     0x0003
      Left Front (L)
      Right Front (R)
    iChannelNames           0 
    bmControls         0x00
    iMixer                  0 
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           1
  bInterfaceClass         1 Audio
  bInterfaceSubClass      2 Streaming
  bInterfaceProtocol      0 
  iInterface              0 
  AudioStreaming Interface Descriptor:
    bLength                 7
    bDescriptorType        36
    bDescriptorSubtype      1 (AS_GENERAL)
    bTerminalLink           1
    bDelay                  1 frames
    wFormatTag              1 PCM
  AudioStreaming Interface Descriptor:
    bLength                14
    bDescriptorType        36
    bDescriptorSubtype      2 (FORMAT_TYPE)
    bFormatType             1 (FORMAT_TYPE_I)
    bNrChannels             2
    bSubframeSize           2
    bBitResolution         16
    bSamFreqType            2 Discrete
    tSamFreq[ 0]        48000
    tSamFreq[ 1]        44100
  Endpoint Descriptor:
    bLength                 9
    bDescriptorType         5
    bEndpointAddress     0x01  EP 1 OUT
    bmAttributes            9
      Transfer Type            Isochronous
      Synch Type               Adaptive
      Usage Type               Data
    wMaxPacketSize     0x00c8  1x 200 bytes
    bInterval               1
    bRefresh                0
    bSynchAddress           0
    AudioControl Endpoint Descriptor:
      bLength                 7
      bDescriptorType        37
      bDescriptorSubtype      1 (EP_GENERAL)
      bmAttributes         0x01
        Sampling Frequency
      bLockDelayUnits         1 Milliseconds
      wLockDelay              1 Milliseconds
Interface Descriptor:
  bLength                 9
  bDescriptorType         4
  bInterfaceNumber        2
  bAlternateSetting       0
  bNumEndpoints           0
  bInterfaceClass         1 Audio
  bInterfaceSubClass      2 Streaming
  bInterfaceProtocol      0 
  iInterface              0 
Interface Descriptor:
  bLength                 9
  bDescriptorType         4

Bus 001 Device 004: ID 0d8c:0012 C-Media Electronics, Inc.
Device Descriptor:
bLength                18
bDescriptorType         1
bcdUSB               1.10
bDeviceClass            0 (Defined at Interface level)
bDeviceSubClass         0
bDeviceProtocol         0
bMaxPacketSize0         8
idVendor           0x0d8c C-Media Electronics, Inc.
idProduct          0x0012
bcdDevice            1.00
iManufacturer           1 C-Media Electronics Inc.
iProduct                2 USB Audio Device
iSerial                 0
bNumConfigurations      1
Configuration Descriptor:
bLength                 9
bDescriptorType         2
wTotalLength          253
bNumInterfaces          4
bConfigurationValue     1
iConfiguration          0
bmAttributes         0x80
  (Bus Powered)
MaxPower              100mA
Interface Descriptor:
  bLength                 9
  bDescriptorType         4
  bInterfaceNumber        0
  bAlternateSetting       0
  bNumEndpoints           0
  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          100
    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             2
    wChannelConfig     0x0003
      Left Front (L)
      Right Front (R)
    iChannelNames           0
    iTerminal               0
  AudioControl Interface Descriptor:
    bLength                12
    bDescriptorType        36
    bDescriptorSubtype      2 (INPUT_TERMINAL)
    bTerminalID             2
    wTerminalType      0x0201 Microphone
    bAssocTerminal          0
    bNrChannels             1
    wChannelConfig     0x0001
      Left Front (L)
    iChannelNames           0
    iTerminal               0
  AudioControl Interface Descriptor:
    bLength                 9
    bDescriptorType        36
    bDescriptorSubtype      3 (OUTPUT_TERMINAL)
    bTerminalID             6
    wTerminalType      0x0301 Speaker
    bAssocTerminal          0
    bSourceID               9

结束更新

有什么指点吗？

谢谢

丹尼

答案1

1) USB 音频设备由 ALSA 内核驱动程序处理，并且这些驱动程序会自动对 USB 设备（或通用接口）的供应商：产品标识符做出反应。您通常使用的驱动程序都不会使用devstr.你没有说为什么需要这个字符串，但你可能做错了。

2) 您的示例内容devstr是 USB 路径，如图所示/sys/bus/usb/devices。无法从您的信息中获取它，但lsusb -t如果您无法直接找到设备，则可以从中获取它。

3) 请dmesg使用插入设备后出现的输出来编辑问题。

4) 您很可能缺少正确的 ALSA 驱动程序。如果还没有，请将内核更新到最新版本。

编辑

什么应该发生的情况是模块snd-usb-audio是根据USB设备的类加载的。相反，根据您的dmesg情况，该设备被识别为人机接口设备，这很奇怪，除非除了声音功能之外，它还具有以这种方式表示的按钮或类似按钮。

请使用 的输出编辑问题lsusb -vd 0d8c:0012，以便我们可以查看它是否具有带有音频类的描述符。另外，验证您的内核是否包含该模块snd-usb-audio，并modinfo snd-usb-audio包含这两个

alias:          usb:v*p*d*dc*dsc*dp*ic01isc01ip*in*
alias:          usb:v*p*d*dc*dsc*dp*ic01isc03ip*in*

线。

编辑

假设输出末尾的重复行是复制和粘贴错误：这看起来像标准 USB 声卡，并且应该由 来自动处理snd-usb-audio。我刚刚仔细检查了我的 USB 声卡，看起来该驱动程序在成功初始化时不会生成消息。请编辑带有输出的问题，cat /proc/asound/cards/看看它是否被选中。

如果不是，我唯一的猜测是你以某种方式搞乱了你的模块依赖关系，尽管我不知道你做了什么，而且你没有说（但是“（我有一个未命名的软件）配置而需要......”听起来有点不祥）。如果是这种情况，您可以尝试使用手册modprobe snd-usb-audio；您可以尝试使用 修复它depmod，或者您可以重新安装（或升级，当您使用它时）您的内核。

如果这没有帮助，我就没主意了。

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