I just installed Ubuntu today. I'm testing everything out and it seems pretty cool so far. There's just one big problem. The audio suddenly stopped working. It worked just fine when I first installed the system, but it has stopped for no reason that I can determine.
I don't like to use proprietary software (though I will if I have to), so I removed these packages: firmware-crystalhd nvidia-libopencl1-331-updates nvidia-opencl-icd-331-updates
. But they don't appear to be the problem, because reinstalling them didn't fix the problem.
I checked alsamixer, and it looks rather different from what I'm used to: https://i.stack.imgur.com/qF6iW.png
The "Sound" settings in the system settings aren't too helpful, but here's another screenshot just in case: https://i.stack.imgur.com/or1Cw.png I can't move the slider, and there's no sound devices listed.
$ aplay -l
outputs this: http://privatepaste.com/63ee9d659d – EMBLEM Nov 18 '14 at 00:59