Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Unable to unload v4l2loopback, Close any programs using virtual video devices and try again

See original GitHub issue

When trying to start Mon2Cam I basically get this message: Unable to unload v4l2loopback, Close any programs using virtual video devices and try again.

I’ve tried manually unloading v4l2loopback, and reinstalling v4l2loopback but it still doesn’t work.

I’m on Manjaro with kernel 5.4.23-1-MANJARO.

Issue Analytics

State:
Created 3 years ago
Comments:11 (4 by maintainers)

Top GitHub Comments

1reaction

AkumuKernelcommented, May 7, 2020

Hi, hi, i have same problem, but, i tried to use sudo sudo modprobe -r v4l2loopback and: modprobe: FATAL: Module v4l2loopback not found. I have v4l2loopback installed I’m on Linux archiso 5.6.10-arch1-1

0reactions

lefuturistecommented, May 11, 2020

Yes I have the core/linux-headers arch package installed and rebooted many times

Top Results From Across the Web

Unable to unload v4l2loopback, Close any programs using ...

... Mon2Cam command I get Unable to unload v4l2loopback, Close any programs using virtual video devices and try again this error message!

Trying to set up virtual webcam - it's not working | OBS Forums

I've installed V4L2 Loopback, obs-v4l2 sink, v4l-utils. I did: sudo modprobe v4l2loopback devices=4. Then this: v4l2-ctl --list-devices. Dummy ...

Sink to the virtual v4l2 device - linux - Stack Overflow

The solution was to unload / load the v4l2loopback kernel commands, forcefully removing the v4l2loopback kernel module and adding it again using ......

modprobe: fatal: module v4l2loopback is in use. - You.com

After trying to access the video device created by v4l2loopback via Firefox I can't unload the kernel module anymore. The "Used by" decrements...

Adding and removing v4l2-loopback devices?

My question is how to add and remove these v4l2loopback devices at runtime? I want to add/remove a device whenever any lxc container...