title: webcam + external camera failure, cannot access /dev/video*: No such file or directory
body: <p>I hope someone out there can help me! </p>
  
  <p>I'm working on a Toshiba SATELLITE-L50-A-1DN, and I am having problems connecting a camera to the USB ports, as well as the integrated webcam not being recognised. </p>
  
  <p>I am using Ubuntu 16.04 with kernel 4.13.0-45-generic</p>
  
  <p>After plugging in an external webcam, <code>lsusb</code> does not change, indicating no device has been recognised. </p>
  
  <p><code>ls -ltrh /dev/video*</code> returns the error: <code>ls: cannot access '/dev/video*': No such file or directory</code></p>
  
  <p>I have tried installing uvcvideo, but the most up to date version is already installed. Related to this, I cannot access the Video4Linux module required to use one of the two cameras I am trying to use. </p>
  
  <p>I am aware of the same question being posted here: <a href="https://stackoverflow.com/questions/36159501/cannot-access-dev-video-no-such-file-or-directory">cannot access /dev/video*: No such file or directory</a> but I can't seem to make that solution work for me.</p>