Try re/installing alsa, alsa-utils
Did you reinstall the two packages?
Yes,it did not seem to help.I am running from a live dvd right now.It correctly identifies the ALC887 hardware
in phonon and the files in /usr/share/alsa that were missing are now there.
Kmix had the sound slider for cd only and it was muted.I added more controls such as PCM2, Line,and Igain but still no
sound.Using clementine to test.