4

I was using facebook messenger, and When I finished my call, the web cam stilled working.I have an integrated camera in my laptop HP 630. Is there a way to turn it off ? Thanks.

4
11

Thank you guys, the problem is gone.

- I used the command : lsof | grep video0 to find the software using my webcam. It was FireFox.

- I just restarted FireFox, and then the webcam turned off.

1
  • 4
    Just run lsof /dev/video0. That's often much faster than running lsof on all files
    – smac89
    Jun 2 '20 at 4:58
8

If the webcam behaves weirdly, not automatically turning off for example, you can:

To disable the webcam run:

sudo modprobe -r uvcvideo

It removes the module from the Linux Kernel.

To re-enable the webcam you can either restart or run:

sudo modprobe -a uvcvideo

Reinserts the module.

2
  1. sudo rmmod -f uvcvideo(to kill laptop camera)

  2. sudo modprobe -r uvcvideo(to restart the video module)

  3. sudo modprobe uvcvideo(to restart the laptop camera)

  4. sudo modprobe -a uvcvideo(can be used while skipping steps 2&3 to restart the camera directly)

1
  • lsmod | grep uvcvideo (to check if camera killed or alive)
    – Rolas
    Dec 2 '20 at 7:10
1

If you know the application name, you can use the following to get the process ID:

ps -fA | grep application_name
Output: process_name PID PPID .....

Then you can kill the process using:

kill -9 PID

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