post the out of alsa-info.sh and pulseaudio verbose log
https://wiki.ubuntu.com/Audio/AlsaInfo https://wiki.ubuntu.com/PulseAudio/Log digital output was selected Default sample spec: s16le 2ch 44100Hz Default channel map: front-left,front-right Default sink name: alsa_output.pci-0000_00_1b.0.iec958-stereo Default source name: alsa_input.pci-0000_00_1b.0.analog-stereo -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1229473 Title: iMac5,1, SigmaTel STAC9221 A1, White Speaker, Internal No sound at all To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1229473/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs