my webcam wont work - how do I debug?

My HP 6930 laptop has a built in webcam. This used to work just fine when I had Windows installed.

Now that I am on Ubuntu, the webcam does not work.

I installed Cheese, but this is what I get:

How do I go about debugging this?

From ubuntu Raj More

• Install cheese (webcam software) by searching for 'cheese' in Ubuntu Software Centre.

  Then run cheese in a terminal (Applications -> Accessories -> Terminal) using this command:

  cheese
  

  Have a look at any errors that are printed in the terminal. You can copy these by selecting the text and pressing ctrl-shift-c.

  These should give you a clue to what the problem is.

  You could use the same process for any other software that you are using that uses the webcam.

  Raj More : I tried running in terminal - no errors, no messages.
  From dv3500ea

• "No device found" sounds like no driver is found/loaded for the camera...

  1. Some laptops have a switch/key to enable/disable the webcam; make sure it's on. ;-)
  2. Does your webcam show up in the output of the lsusb command? If it does, can you provide us with the line that describes the webcam? (If you're not sure which line it is, feel free to add the whole output of lsusb to your original post.)
  From JanC

• Do u have /dev/video file? This is how webcams are seen. Also, try launching gstreamer-properties and inspecting the 'video' tab

  From Alexey Nedilko

• The camera on that model seams to be a Chicony, running the following should give you one line with the camera model:

  lsusb | grep 04f2

  You can then look up your model (search for the number after the red text) on this site: http://www.ideasonboard.org/uvc/

  From AJenbo