Originally Posted by fuzzy2010
Pretty sure that's a syntax error, since I suspect all options targets are hyphenated, but you shouldn't need the line at all.
At any rate, the "back to basics" technique apparently hasn't gotten us anywhere (unless the presence of the line above was it, which I doubt). If you can't get it in aplay (or speaker-test), you just ain't gonna get it anywhere. There was a new reply on your original thread which you might check out; as it is Fedora-specific I can't usefully comment on it.
The only ideas I have left include doing ugly things like compiling your own ALSA and/or kernel. I can't imagine that it's down to that, but hopefully someone else will chime in.