How come my sound won't work on Lenovo ThinkPad x230?

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http://askubuntu.com – I have a Lenovo ThinkPad x230 that I just purchased and installed Ubuntu 12.10 on it. There is no sound, how do I fix it? I checked that my volume is unmuted. I also tried checking in alsamixer and it looks like it dosn't see my sound card. (HowTos)