I just upgraded to 12.04 I have sound. Using headphones also mutes the speaks. So far so good.
I can't use my shortcuts to control volume anymore. It's usually Fn + Left Arrow and Fn + Right Arrow.
In top right corner, the volume bar looks like the volume is all down. Clicking on it, I can go to Sound Settings... and it seems I can't use that application. It opens, but I can't click on anything and basically there is nothing to click on. It's greyed out with no information.
What do I do? I can control volume through Gnome Alsamixer... or whatever player I play music from (so it seems. I tried Rythmbox... and youtube). But it still seems the sound application doesn't work.
I've got a lenovo U350.