我的网络摄像头是 Sunplus Innovation Integrated_Webcam_HD，在 ubuntu 20.04 live cd 中运行良好。但安装 ubuntu 后，网络摄像头不工作，她只是打开灯。最奇怪的是，再次进入 live cd 并重新启动安装的操作系统后，网络摄像头可以工作！但重启后停止工作！疯了！
我的机器是戴尔 Vostro。
hwinfo --usb 输出：
06: USB 00.0: 0000 Unclassified device
[Created at usb.122]
Unique ID: MtLc.abYmUw330z0
Parent ID: k4bc.2DFUsyrieMD
SysFS ID: /devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0
SysFS BusID: 1-6:1.0
Hardware Class: unknown
Model: "Sunplus Innovation Integrated_Webcam_HD"
Hotplug: USB
Vendor: usb 0x1bcf "Sunplus Innovation Technology Inc."
Device: usb 0x2b99 "Integrated_Webcam_HD"
Revision: "83.30"
Driver: "uvcvideo"
Driver Modules: "uvcvideo"
Device File: /dev/input/event11
Device Files: /dev/input/event11, /dev/input/by-id/usb-CNFHH47O381420038CE0_Integrated_Webcam_HD-event-if00, /dev/input/by-path/pci-0000:00:14.0-usb-0:6:1.0-event
Device Number: char 13:75
Speed: 480 Mbps
Module Alias: "usb:v1BCFp2B99d8330dcEFdsc02dp01ic0Eisc01ip00in00"
Driver Info #0:
Driver Status: uvcvideo is active
Driver Activation Cmd: "modprobe uvcvideo"
Config Status: cfg=new, avail=yes, need=no, active=unknown
Attached to: #9 (Hub)