Usb microphone with Linux Mint
 

I was using Fedora with Pulseaudio, and my usb cam/microphone was working fine. Now I'm using Linux Mint 14.1, and I haven't been able to get the microphone working yet. The microphone is recognized though. Pulseaudio is running. However when I run alsamixer, I see a lot of mixers instead of the 3 mixers I had with pulseaudio in Fedora.

I included two screenshots, alsamixer for "capture view" and gui mixer for gnome/cinnamon. Linux sees it through lsusb as well.

The GUI mixer is not detecting any input from the usb microphone nor does skype.

I got personally different behaviour between ubuntu 10.04 and archbang re audio.
ubuntu needed some linux backports modules (asus k51ae).
So, no wonder you have different behaviour in 2 different systems.
look at the alsa version: different?
modules loaded different?
overtake the alsa setup from fedora into mint?
hopefully it helps.

I've got USB speakers to work with Mint, just using the Gnome tool. The microphone is marked on: is the other device marked off? You might find this useful
http://wiki.debian.org/ALSA