We figured it was not a pulse problem but with alsa since upgrade of libasound.
solution: switch back to older versions. sudo apt install libasound2=1.2.2-2.1 libasound2-data=1.2.2-2.1 libasound2:i386=1.2.2-2.1 libatopology2=1.2.2-2.1 view the report here: https://bugs.launchpad.net/ubuntu/+source/alsa- lib/+bug/1905132 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1901901 Title: Lenovo Yoga Slim 7: Sound output device is not detected after upgrade from Ubuntu 20.04 to 20.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1901901/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
