设备：NVIDIA JETSON AGX XAVIER 板子，即插即用 USB 摄像头（之前在同型号板子上录制过图像，可排除设备硬件问题） 系统：使用 NVIDIA SDKManager 安装的 64 位 Ubuntu18.04LTS

内存：32GB CPU：ARMv8 Processor rev 0 (v8l) × 8

图形显示：NVIDIA Tegra Xavier (nvgpu)/integrated

问题描述：

无法使用摄像头。

1.打开 GUI 图形版本 cheese 直接闪退，终端输入 cheese 后，输出

(cheese:10271): Clutter-WARNING **: 17:48:52.948: Whoever translated default:LTR did so wrongly.
(cheese:10271): Gtk-WARNING **: 17:48:53.125: Theme parsing error: cheese.css:7:35: The style property GtkScrollbar:min-slider-length is deprecated and shouldn't be used anymore. It will be removed in a future version
Opening in BLOCKING MODE
段错误 (核心已转储)

2.输入 camorama 命令，输出

Opening in BLOCKING MODE
段错误 (核心已转储)

3.输入 dmesg 命令，相关输出如下

……
[    8.585008] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[    8.602004] usb 1-4.4: new high-speed USB device number 5 using tegra-xusb
[    8.628439] nvgpu: 17000000.gv11b                 tpc_pg_mask_store:843  [INFO]  no value change, same mask already set
[    8.662969] gpio tegra-gpio wake20 for gpio=52(G:4)
[    8.670838] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[    8.755785] usb 1-4.4: New USB device found, idVendor=1bcf, idProduct=2284
[    8.755794] usb 1-4.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    8.755798] usb 1-4.4: Product: aoni Webcam
[    8.755801] usb 1-4.4: Manufacturer: Sunplus IT Co 
[    9.025078] usb 1-4.4: Warning! Unlikely big volume range (=4096), cval->res is probably wrong.
[    9.025382] usb 1-4.4: [5] FU [Mic Capture Volume] ch = 1, val = 0/4096/1
[    9.380506] uvcvideo: Found UVC 1.00 device aoni Webcam (1bcf:2284)
[    9.402190] uvcvideo 1-4.4:1.0: Entity type for entity Extension 3 was not initialized!
[    9.402418] uvcvideo 1-4.4:1.0: Entity type for entity Processing 2 was not initialized!
[    9.402591] uvcvideo 1-4.4:1.0: Entity type for entity Camera 1 was not initialized!
[    9.403258] input: aoni Webcam as /devices/3610000.xhci/usb1/1-4/1-4.4/1-4.4:1.0/input/input10
[    9.403514] usbcore: registered new interface driver uvcvideo
[    9.403519] USB Video Class driver (1.1.1)
[    9.539376] zram: Added device: zram0
[    9.539969] zram: Added device: zram1
[    9.540471] zram: Added device: zram2
[    9.541125] zram: Added device: zram3
[    9.547594] zram: Added device: zram4
[    9.548813] zram: Added device: zram5
[    9.549366] zram: Added device: zram6
[    9.552869] zram: Added device: zram7
[    9.575294] zram0: detected capacity change from 0 to 2091954176
……

4.输入 cd /dev , dmesg | grep video，输出

[    0.000000] Kernel command line: console=ttyTCU0,115200 video=tegrafb no_console_suspend=1 earlycon=tegra_comb_uart,mmio32,0x0c168000 gpt rootfs.slot_suffix= [email protected] [email protected] usbcore.old_scheme_first=1 tegraid=19.1.2.0.0 maxcpus=8 boot.slot_suffix=_b boot.ratchetvalues=0.4.2 vpr_resize sdhci_tegra.en_boot_part_access=1    quiet root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyTCU0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0 rootfstype=ext4
[    1.023302] Linux video capture interface: v2.00
[    9.380506] uvcvideo: Found UVC 1.00 device aoni Webcam (1bcf:2284)
[    9.402190] uvcvideo 1-4.4:1.0: Entity type for entity Extension 3 was not initialized!
[    9.402418] uvcvideo 1-4.4:1.0: Entity type for entity Processing 2 was not initialized!
[    9.402591] uvcvideo 1-4.4:1.0: Entity type for entity Camera 1 was not initialized!
[    9.403514] usbcore: registered new interface driver uvcvideo
[ 1746.377467] uvcvideo: Found UVC 1.00 device KS2A418-2.0 (2304:4922)
[ 1746.384875] uvcvideo 1-4:1.0: Entity type for entity Extension 4 was not initialized!
[ 1746.385034] uvcvideo 1-4:1.0: Entity type for entity Extension 3 was not initialized!
[ 1746.385161] uvcvideo 1-4:1.0: Entity type for entity Processing 2 was not initialized!
[ 1746.385306] uvcvideo 1-4:1.0: Entity type for entity Camera 1 was not initialized!

5.输入 lsusb，输出

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 1bcf:国外服务器2284 Sunplus Innovation Technology Inc. 
Bus 001 Device 004: ID 2717:5016  
Bus 001 Device 003: ID 1c4f:0002 SiGma Micro Keyboard TRACER Gamma Ivory
Bus 001 Device 002: ID 2109:2815 VIA Labs, Inc. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

6.输入 ls /dev/v*,输出

/dev/vcs   /dev/vcs3  /dev/vcs6   /dev/vcsa2  /dev/vcsa5  /dev/video0
/dev/vcs1  /dev/vcs4  /dev/vcsa   /dev/vcsa3  /dev/vcsa6
/dev/vcs2  /dev/vcs5  /dev/vcsa1  /dev/vcsa4  /dev/vhci

/dev/v4l:
by-id  by-path

/dev/vfio:
vfio

可以看到有 /dev/video0

7.输入 sudo chmod 777 /dev/video0

8.我浏览了很多网页，实在不知道该怎么做了，就是打开一个摄像头而已，求 v 友给点解决办法或思路！ 跪求！

放弃了，直接用 Opencv 打开使用了。