Re-reading the previous comments, I think this bug report has become a collection of different causes for pulseaudio not starting up. Let me know if I should file a new bug for the specific behavior I've seen with module-zeroconf-discover being required when it shouldn't be.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/978248 Title: No soundcards detected by pulseaudio, but visible from ALSA Status in “pulseaudio” package in Ubuntu: Confirmed Bug description: i have two soundcards, one integrated soundblaster and one nvidia. Never used the nvidia, but soundblaster has worked in ubuntu since ~2006. Cant see any of them in sound menu. Alsamixer sees them, but didnt help in getting sound. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: gnome-control-center 1:3.4.0-0ubuntu5 ProcVersionSignature: Ubuntu 3.2.0-22.35-generic 3.2.14 Uname: Linux 3.2.0-22-generic i686 NonfreeKernelModules: nvidia ApportVersion: 2.0-0ubuntu5 Architecture: i386 Date: Tue Apr 10 20:09:59 2012 ExecutablePath: /usr/bin/gnome-control-center InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1) ProcEnviron: SHELL=/bin/bash PATH=(custom, user) LANG=en_US.UTF-8 SourcePackage: gnome-control-center UpgradeStatus: Upgraded to precise on 2012-04-10 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/978248/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

