usb摄像头驱动打印信息
在ubuntu中接入罗技c920摄像头打印的信息如下：
[ 100.873222] usb 3-2: new high-speed USB device number 5 using xhci_hcd
[ 101.230728] usb 3-2: New USB device found, idVendor=046d, idProduct=08e5
[ 101.230731] usb 3-2: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[ 101.230732] usb 3-2: Product: HD Pro Webcam C920
[ 101.256962] media: Linux media interface: v0.10
[ 101.264733] Linux video capture interface: v2.00
[ 101.435920] usb 3-2: current rate 16000 is different from the runtime rate 24000
[ 101.442508] usb 3-2: current rate 16000 is different from the runtime rate 32000
[ 101.577486] usbcore: registered new interface driver snd-usb-audio
[ 101.578997] uvcvideo: Found UVC 1.00 device HD Pro Webcam C920 (046d:08e5)
[ 101.582409] uvcvideo: Failed to set UVC probe control : -32 (exp. 26).
[ 101.587166] input: HD Pro Webcam C920 as /devices/pci0000:00/0000:00:15.0/0000:03:00.0/usb3/3-2/3-2:1.0/input/input6
[ 101.587785] usbcore: registered new interface driver uvcvideo
[ 101.587786] USB Video Class driver (1.1.1)
[ 101.776262] usb 3-2: current rate 16000 is different from the runtime rate 32000
[ 102.044533] usb 3-2: current rate 16000 is different from the runtime rate 32000
分析一下这些打印信息
[100.873222]usb3-2:newhigh-speedUSBdevicenumber5usingxhci_hcd:这表示一个新的高速USB设备被连接到USB3-2端口。[10230728]usb3-2:NewUSBdevicefound,idVendor=046d,idProduct=08e5:这表明检测到一个新的USB设备，其供应商ID是046d，产品ID是08e这些ID用于唯一标识设备。[10230732]usb3-2:Product:HDProWebcamC920:这指示连接的USB设备是一个罗技C920高清网络摄像头。[10256962]media:Linuxmediainterface:v0.10:这表示Linux媒体接口的版本是v0.该接口可能与摄像头的驱动程序通信。[10264733]Linuxvideocaptureinterface:v00:这指示Linux视频捕获接口的版本是v00，该接口用于处理视频捕获设备。[10435920]usb3-2:currentrate16000isdifferentfromtheruntimerate24000:这表示USB设备的当前速率是16000，与运行时速率24000不同。这可能涉及摄像头的帧率或数据传输速度设置。[10578997]uvcvideo:FoundUVC00deviceHDProWebcamC920:这表明发现了一个UVC00设备，其名称为"HDProWebcamC920"，供应商ID为046d，产品ID为08eUVC是一种用于视频设备的USB驱动程序标准。[10582409]uvcvideo:FailedtosetUVCprobecontrol:-32:这表示设置UVC探测控制失败，错误代码为-3这可能意味着某些配置或控制参数无法正确设置。[10587166]input:HDProWebcamC920as/devices/pci0000:00/0000:00:10/0000:03:00.0/usb3/3-2/3-2:0/input/input6:这表明HDProWebcamC920被识别为输入设备，并分配了输入编号[10587785]usbcore:registerednewinterfacedriveruvcvideo:这表示uvcvideo驱动程序已注册为新的接口驱动程序，用于支持UVC设备。[10587786]USBVideoClassdriver:这指示USBVideoClass驱动程序的版本是该驱动程序用于提供对UVC设备的
后面将根据打印的信息来分析摄像头相关的驱动。
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