Ubuntu: webcam stopped working - "Unable to access camera."

[DBLUMENF]

I am using both Windows and Linux. My webcam stopped working on Ubuntu Linux 20.04 (I think it happened after my latest software update, but I'm not sure). The message I get is "Unable to access camera.". Anybody else with the same issue? Any idea on what to do?

[JamesB84]

Funnily enough, when I choose the webcam in Webex the blue light around the Webcam comes on, but no video signal comes through in the application...

[DBLUMENF]

Same here.

[JamesB84]

No idea. In my case the external webcam is shown in the drop down menu but selecting it simply causes the picture from the laptop webcam to freeze, whereas the picture from the Logitech camera does not come through...

[JamesB84]

In my case (Ubuntu 20.04), my external Logitech C920 Webcam doesn't work on Webex, but it works on other applications, i.e. Zoom / Skype. Webex will only use my laptop's built-in camera. This problem also only happened recently, since the camera used to work previously with Webex.

[DBLUMENF]

Any idea who to contact for support?