I just upgraded my Ubuntu 10.04 laptop to 10.10, and noticed that while the speakers where playing sound, my headphones (jack) where dead silent. I ended up reinstalling alsa, but to no avail. No I have no sound at all.
Lenovo Thinkpad T400s.
`alsamixer` -> "cannot open mixer: No such file or directory"
What I can do to debug/rectify this?
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