I have a Lenovo laptop. My camera is working 'sometimes' for short periods of time, then suddenly stops working.
Here is the output of my lsusb, as you can see the camera is not present:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 25a7:2410 Areson Technology Corp Laser mouse
Bus 001 Device 005: ID 8087:0026 Intel Corp. AX201 Bluetooth
Bus 001 Device 101: ID 047f:c008 Plantronics, Inc. Audio 655 DSP
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
The output of v4l2-ctl:
v4l2-ctl --list-devices
Cannot open device /dev/video0, exiting.
My kernel version: 5.15.0-119-generic
Launching cheese, it says: no device found.
The laptop has a physical switch (shutter) to block off the camera, but the switch is not activated.