Thanks, now we made a good step forward :) Now, at this working state, take alsa-info.sh output again. The previous given one seems to have been take at the wrong moment, using headphone. Run the script with --no-upload option, and attach the output file to Bugzilla. Then, try to boot kernel-default-3.16.7-7.1 while keeping the rest system unchanged. Just need to check the sound output in this case again, too. If this still works, try the next one, kernel-default-3.16.7-21.1. In that way, we narrow down the regression point.