I have the exact same issue. Installing 0.4.11-5 fixes it.
- Bug#1021530: wireplumber: No sound after upgrade to 0.4.12... Ben Morris
- Bug#1021530: wireplumber: No sound after upgrade to 0... Kurt Meyer
- Bug#1021530: wireplumber: No sound after upgrade to 0... Dylan Aïssi
- Bug#1021530: wireplumber: No sound after upgrade to 0... Francois Le Hir
- Bug#1021530: wireplumber: No sound after upgrade to 0... Francois Le Hir
- Bug#1021530: wireplumber: No sound after upgrade to 0... benmorris
- Bug#1021530: wireplumber: No sound after upgrade to 0... Kurt Meyer
