[ubuntu] Sound in login page, no sound after

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http://ubuntuforums.org – I have 12.10 installed on a Thinkpad x230. It works great except for sound. I do have sound in the login page, but after I log in and get to the desktop, everything is perfectly silent. I went through all the guides, nothing is muted, alsamixer looks ok in the console etc, but no sound plays and no errors are reported that I can see. I tried restarting pulseaudio and alsa but no change. Rebooting doesn't help either. Is anyone else seeing this? Anything I can try to fix this? (Hardware)