I've got a mac (desktop around 2008). I installed Ubuntu 11.10, then remembered I had 12.04 on a disc. I installed 12.04 and now the audio will not work. I've tried all the
killallpulse and looked briefly at the Alsa thing. I put in speakers and they only work with the headphone setting.
When i put in
0 [Intel ]: HDA-Intel - HDA Intel HDA Intel at 0x50600000 irq 47
I do have the Mac startup noise but no sound in Ubuntu