我的相机已经有一段时间无法工作了，但我记得它以前是可以工作的（在我使用的第一个版本上（不确定是 19.04 还是 19.10））。我现在的版本是 20.04 LTS。
实际上这对我来说并不重要，因为我根本不使用相机，但现在我需要网络摄像头。
这是lsusb输出：
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 8087:0a2a Intel Corp.
Bus 001 Device 044: ID 1bcf:28c1 Sunplus Innovation Technology Inc. Integrated_Webcam_HD
Bus 001 Device 002: ID 2a7a:8a4f CASUE USB KB
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
并dmesg输出：
[ 5332.180445] input: Integrated_Webcam_HD: Integrate as /devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5:1.0/input/input67
[ 5570.253427] nouveau 0000:01:00.0: Enabling HDA controller
[ 5570.377637] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 6013d4 [ IBUS ]
我发现了有关我的网络摄像头的另一个错误：
[ 5330.924694] input: Integrated_Webcam_HD: Integrate as /devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5:1.0/input/input66
[ 5331.659970] usb 1-5: USB disconnect, device number 43
[ 5331.660554] uvcvideo: Failed to resubmit video URB (-19).
[ 5331.664522] uvcvideo: Failed to resubmit video URB (-19).
[ 5331.668522] uvcvideo: Failed to resubmit video URB (-19).
[ 5331.672556] uvcvideo: Failed to resubmit video URB (-19).
[ 5331.676522] uvcvideo: Failed to resubmit video URB (-19).
[ 5332.000022] usb 1-5: new high-speed USB device number 44 using xhci_hcd
[ 5332.156460] usb 1-5: New USB device found, idVendor=1bcf, idProduct=28c1, bcdDevice=65.05
[ 5332.156466] usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 5332.156470] usb 1-5: Product: Integrated_Webcam_HD
[ 5332.156473] usb 1-5: Manufacturer: CN0WNTY0LOG0077BBC5KA01
以下是奶酪的产量：
** (cheese:11738): CRITICAL **: 11:38:32.294: cheese_preferences_dialog_setup_resolutions_for_device: assertion 'device != NULL' failed
并且 guvcview 也出现错误：
V4L2_CORE: (VIDIOC_DQBUF) Unable to dequeue buffer: No such device
可能存在什么问题？我该如何解决？
答案1
我遇到了类似的问题，只需重启即可解决。如果这不起作用，请尝试从 snap store 安装 guvcview。
sudo snap install guvcview
对我来说非常有效。