Chris,
The line:
options snd_hda_intel model=mbp3
goes in the file /etc/modprobe.d/options, NOT /etc/modules. Move the entry and the channel option should appear under preferences. Then follow the rest of the procedure.
Chris,
The line:
options snd_hda_intel model=mbp3
goes in the file /etc/modprobe. d/options, NOT /etc/modules. Move the entry and the channel option should appear under preferences. Then follow the rest of the procedure.