OBS v4l2-input errno: Device or resource busy

Operating System Info

Other

Other OS

Linux Mint 22.1

OBS Studio Version

32.0.2

OBS Studio Version (Other)

No response

OBS Studio Log URL

https://obsproject.com/logs/kZfFRUjlBgk2dsG2

OBS Studio Crash Log URL

No response

Expected Behavior

Utilize V4l2-input for webcam and capture card service.

Current Behavior

Until a day or so ago after updating, I was able to use my webcam just fine. However, after a big update, seems nothing works properly now ONLY within OBS. I was using the stable 32.0.2 version from the released .deb file, then tried installing 32.0.3 from the newest .deb file but now OBS never loads. So I had to reinstall using the software available version 32.0.2.1-3build1.. and now my docked chats have disappeared and my webcam still does not work.

I have verified my webcam works in every single program except OBS. When I configure the webcam, it just gives an Input error message in the logs, and shows the device as busy. However, I'm able to confirm OBS is the ONLY thing using the device and nothing else is touching it. It's like OBS starts the v4l2 service, but then can't do anything with it. It locks itself out of any v4l2 device.

I've tried several previous kernels, tried different versions of OBS.. nothing helps. I really need this to work..

UPDATE: now OBS crashes instantly when I try to use any Window Capture..

Steps to Reproduce

1.Open OBS
2. No webcam shows
3. Configure webcam, nothing saves, logs show device is busy, but is only being used by OBS
...

Anything else we should know?

No response

Start with the OBS log URL and the reported v4l2-input “Device or resource busy” error, then compare the webcam and capture-card behavior described under Current Behavior. No source file or test is identified. Done means reproducing the device-busy failure and the Window Capture crash, with both behaviors resolved or narrowed to a specific cause.