no (sound is being used by pid 2241)) [FAILED]
That looks to me like some process is preventing alsa from being stopped. Which? I don't know.
It will take someone who understands this better than I do to help beyond this.
I don't know if it helps, but I only use LXDE with kde core packages. I've got two old expensive soundcards and I get that error whenever I run alsaconf and have ever since we had the resurgence of development.
edit: forgot to mention, I worked out some time back that the app holding the soundcard is the lxpanel.
Now these cards were always tolerated
by alsa, and initially, pulse audio was an absolute bear. But I followed Tex's instructions in a thread suggesting to install task-pulseaudio. Reboot. etc.
My sound is at least reliable on the two machines. But far from configured properly unfortunately.
If the sound software packages would sit still for five minutes, I'd write up a tute. But with all the changes and all the editions, I just can't begin.
I am not complaining, because sane support of one of these cards(darla 20) brought me to this distro.