>From your boot dmesg contents:
...
[ 12.118275] snd_hda_intel: Unknown symbol snd_ctl_add_slave
[ 12.119723] snd_hda_intel: Unknown symbol snd_card_new
[ 12.136091] snd_usb_audio: Unknown symbol snd_card_new
[ 12.139626] snd_usb_audio: Unknown symbol snd_card_new
...
These errors do not appear in a default Ubuntu Jaunty install. Have you
compiled your own ALSA version?
** Changed in: pulseaudio (Ubuntu)
Status: New => Invalid
--
No sound
https://bugs.launchpad.net/bugs/363760
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