[ 2434.409316] usb 4-2: USB disconnect, device number 2
[ 2457.692106] usb 4-2: new full-speed USB device number 3 using ohci-pci
[ 2457.841148] usb 4-2: New USB device found, idVendor=0d8c, idProduct=0103
[ 2457.841154] usb 4-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 2457.841158] usb 4-2: Product: USB Sound Device
[ 2457.841162] usb 4-2: Manufacturer: C-Media INC.
[ 2457.870143] usb_audio: Warning! Unlikely big volume range (=9472), cval->res is probably wrong.
[ 2457.870149] usb_audio: [13] FU [PCM Playback Volume] ch = 2, val = -9473/-1/1
lsusb
Bus 002 Device 003: ID 5986:01a6 Acer, Inc Lenovo Integrated Webcam
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 003: ID 0d8c:0103 C-Media Electronics, Inc. CM102-A+/102S+ Audio Controller
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 002: ID 187c:0515 Alienware Corporation
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
好像内核是可以识别该设备的，但是有个报错，无法自动使用。声言还是从笔记本的出来，没有转到从音箱出来。