I've installed Ubuntu Linux (latest version as of a couple weeks ago) on a Dell laptop, and instead of getting a normal camera image of myself in apps like Skype, I'm getting what looks like an infrared camera image. It looks like I'm in the sights of some sniper's night scope.

I'm guessing the Dell laptop must have a regular camera for imagery and an infrared camera for things like facial recognition.

How do I get Ubuntu to use the right camera?