the cam works. I pull up PulseAudio I can see it pick me up for 1sec then stops. don't work on Skype I've tried every USB port same thing it worked on 10.04 fine. but now I'm on 12.04 and it don't work. it is a logitech B500
desktop:~$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 046d:0807 Logitech, Inc. Webcam B500
Bus 003 Device 002: ID 03f0:6104 Hewlett-Packard DeskJet 5650c
Bus 005 Device 002: ID 046d:c51b Logitech, Inc. V220 Cordless Optical Mouse for Notebooks
I have changed some setting in flash Player Settings Manager, I don't think it would affect it after all the cam is still working it's the microphone that freezes up, but thought I would tell you this, info is good.
Best Answer
Changing settings on pulse audio should bring up the sound on your mic.
here's my current config
Update:
I found the permanent fix. Changing the Input Device values under gstreamer-properties did the trick for me.
Follow this Link for more info