I can confirm the issue, however, I still get no sound after copying the .conf file from the source package to /usr/share/alsa/alsa.conf.d like Matthias suggested. Still investigating...
- Bug#912721: libasound2-plugins: Sound no longer works af... Matthias Liertzer
- Bug#912721: libasound2-plugins: Sound no longer wor... Matthias Liertzer
- Bug#912721: libasound2-plugins: Sound no longer wor... Vincent Lefevre
- Bug#912721: (no subject) Bert
- Bug#912721: temporarily workaround Amy Kos