My webcam worked like a charm until I ran a simple python code to take photo. I ran it with root permission by sudo python myapp.py. The program crashed. Then I ran sudo killall -9 python.
From that time, I lost my webcam. If I run my program, I get this error: VIDEOIO ERROR: V4L: can't find camera device. Cheese cann't find device as well.
I google my issue and I find some pages saying that I should re-enable uvcvideo module. I've done it by sudo modprobe -r uvcvideo && sudo modprobe uvcvideo but the problem isn't solved.
This is the result of some of my commands:
$ lsmod | grep uvc
uvcvideo 86016 0
videobuf2_vmalloc 16384 1 uvcvideo
videobuf2_v4l2 24576 1 uvcvideo
videobuf2_core 40960 2 videobuf2_v4l2,uvcvideo
videodev 184320 3
videobuf2_core,videobuf2_v4l2,uvcvideo
media 40960 2 videodev,uvcvideo
$ sudo v4l2-ctl --list-devices
Failed to open /dev/video0: No such file or directory
I should also notice that if I restart the computer I get nothing from lsmod | grep uvc until I run sudo modprobe uvcvideo again.
How should I solve the issue?