No Sound at all using Ubuntu 12.04

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http://askubuntu.com – I am a programmer and I am trying to switch to Ubuntu. I am finding some difficulties in this. I am getting no sound at all in my system (I use a VAIO that is showed in this page -> Vaio Support). Even in the headphone audio doesn´t work! I have already tried most of the terminal commands I have found and it is still not working Here it follows some screenshots: [image1]http://imageshack.us/a/img42/3773/capturadetelade20121016.th.png [image2]http://imageshack.us/a/img708/3773/capturadetelade20121016.th.png [image3]http://imageshack.us/a/img62/3773/capturadetelade20121016.th.png And here i (HowTos)