Digging into the pulse config on 18.10, it looks like instead of using the daemon mode it's trying to setup up some sort of IPC socket, but this isn't getting run correctly:
tessa@viper:~$ systemctl start pulseaudio.socket tessa@viper:~$ systemctl status pulseaudio.socket ● pulseaudio.socket - Sound System Loaded: loaded (/usr/lib/systemd/user/pulseaudio.socket; enabled; vendor preset: enabled) Active: inactive (dead) Condition: start condition failed at Sun 2018-10-21 10:37:45 PDT; 4s ago └─ ConditionUser=!root was not met Listen: /run/pulse/native (Stream) note that it requires a non-root user, but running as more normal user for some reason evaluates to root and fails. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1799007 Title: no sound after 18.10 upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1799007/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs