Microphone not working on ubuntu (tested on 12.04)

If on UBUNTU microphone is not working for skype or for gtalk: follow these simple steps:


1. Open terminal
2. Hit the following command, you may need sudo

        gksudo gedit /etc/modprobe.d/alsa-

base.conf

3. Add following lines at the end of the open file:

        alias snd-card-0 snd-hda-intel
        options snd-hda-intel model=auto

4. Hit the following command on terminal, which will open Alsamixer levels:

        alsamixer

5. Press f4 to see 'capture' Alsamixer levels

6. Maximize all levels
7. Use following command to save it:
        sudo alsactl -f /var/lib/alsa/asound.state store

8. Restart.

Use recorder to see the device is working or not, :) 

If any problem post comment here.