I am running Ubuntu 18.04 on a carbon X1 which has an integrated IR camera, and an integrated ordinary webcam.
However, devices such as Skype and Chrome have mysteriously only started recognizing the IR camera. They have previously successfully found the regular webcam, but on latest reboot the webcam is not even selectable in these applications.
I understand from here that there are tools for identifying the names of my multiple camera peripherals.
What are the command line tools for restarting the webcam/resetting if some other application is holding on to it? How can I force Cheese/skype/chromium to acknowledge the normal camera exists?
(Additionally, can I make the machine completely ignore the IR Camera? It is essentially never what I want, but seems to be an Ubuntu default.)