Comment 63 for bug 783582

@physe: It means "I'm currently too tired to figure out the actual command" :-D

I believe the following command turns EAPD on:

hda-verb /dev/snd/hwC0D0 0x1b SET_EAPD_BTLENABLE 2

You can use this command from the command line (with sudo) to turn it on, and you can add that command to the file "/etc/rc.local" to have it run at bootup.

Hda-verb is available in the snd-hda-tools package in my ppa.