Solution when Linux does not recognize the built-in camera

The built-in camera could not be used in the following conditions.

$ sudo ls /dev/video*
ls: '/dev/video*'Cannot access:There is no such file or directory

The solution is Press the F10 key.

$ sudo ls /dev/video*
/dev/video0  /dev/video1

Check the operation of the camera with the following command.

cheese

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