Getting headphone to work on 2011 Imac 27"

Question

I just installed Ubuntu 12.04 on my Imac and it works flawlessly apart from the fact that I don't get sound from my headphone jack.

The sounds works fine on the speaker.

Does anyone have any pointers ?

Answer 1

Try this, it doesn't work for me, but it does work for some people:

1. sudo gedit /etc/modprobe.d/alsa-base.conf
2. Append options snd-hda-intel model=imac27_122 to the file
3. Reboot