不再检测到USB摄像头。

Question

我有一个USB摄像头，它过去在我的Ubuntu (当前版本18.04.4lts，Linux E480 4.15.0-88-Generic88-UbuntuSMP)上可以正常工作，作为即插即用。现在，有几个月没有发现了。

插入相机后，dmesg的尾巴

[ 5862.596999] usb 1-3: new high-speed USB device number 15 using xhci_hcd
[ 5862.798746] usb 1-3: config 1 interface 1 altsetting 0 endpoint 0x82 has wMaxPacketSize 0, skipping
[ 5862.799144] usb 1-3: New USB device found, idVendor=1742, idProduct=0307
[ 5862.799149] usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 5862.799154] usb 1-3: Product: NCM03-V-02
[ 5862.799157] usb 1-3: Manufacturer: Nippon Chemi-Con Corporation
[ 5862.800479] uvcvideo: Found UVC 1.00 device NCM03-V-02 (1742:0307)
[ 5862.800516] uvcvideo: No streaming interface found for terminal 2.
[ 5862.800524] uvcvideo 1-3:1.0: Entity type for entity Extension 4 was not initialized!
[ 5862.800531] uvcvideo 1-3:1.0: Entity type for entity Processing 3 was not initialized!
[ 5862.800535] uvcvideo 1-3:1.0: Entity type for entity Camera 1 was not initialized!
[ 5862.801081] input: NCM03-V-02 as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/input/input25

lsusb显示了这个条目：

    Bus 001 Device 015: ID 1742:0307  

而lsusb -t这些(在总线01下)：

    |__ Port 3: Dev 15, If 0, Class=Video, Driver=uvcvideo, 480M
    |__ Port 3: Dev 15, If 1, Class=Video, Driver=, 480M

然而，相机没有在/dev/v4l/*中列出，因此也没有在/dev/video*中列出。v4l2-ctl --list-devices没有显示相机。

我试图通过重新安装v4l-utils和重新添加模块uvcvideo和xhci_hcd来解决这个问题。

我假定消息“没有为终端找到流接口”和“实体X没有初始化！”这不是个好兆头，但互联网搜索对我没有帮助。

我有一个双引导(Linux / Windows)和摄像头工作在Windows上。

有什么帮助吗？

Answer 1

我遇到了类似的问题，包uvcdynctrl解决了这个问题。

$ sudo apt install uvcdynctrl

Answer 2

我遇到了类似的问题，在dmesg中发现了以下消息

[  119.312320] usb 1-5: Product: HD WebCam
[  119.312322] usb 1-5: Manufacturer: Generic
[  119.312325] usb 1-5: SerialNumber: XXXXXXXXXXXX
[  119.314500] uvcvideo: Found UVC 1.00 device HD WebCam (0408:a060)
[  119.317874] uvcvideo 1-5:1.0: Entity type for entity Extension 4 was not initialized!
[  119.317880] uvcvideo 1-5:1.0: Entity type for entity Processing 2 was not initialized!
[  119.317885] uvcvideo 1-5:1.0: Entity type for entity Camera 1 was not initialized!

遇到这个回答时，它建议重新安装usbutils。从那以后，我的笔记本电脑开始探测我的相机。