Easy way to enable built-in microphone on Sony Vaio notebooks running Ubuntu. I've been successful on Sony Vaio TT under Ubuntu Natty 11.04. This method doesn't involve editing kernel files nor installing packages so upgrading to future Ubuntu versions won't be a problem. If you try to enable integrated microphone on other linux distributions please give feedback!
- Open a terminal and login as root
echo "options snd-hda-intel model=auto" >> /etc/modprobe.d/alsa-base.conf
- Check Sound System preferences and try with Sound Recorder