Comment 72 for bug 337314

Revision history for this message
Kacper (kacper3-14) wrote : Re: [Bug 337314] Re: Left speaker doesn't work, controls mixed up on Apple MacBook[Pro] (5, 1)

To make things clear. The patch is updated what simply means that new
code is added
so you need to repeat Alsa patch steps. (link didn't change)

reboot. run alsamixer and check if you have surround and LFE. If not
you are still
using wrong modules (mbp3 or old patch). Otherwise you will also have
Channel Mode, select 6.

try speaker-test -Dsurround51 -c6

you should be able to hear front-left, front-right and LFE. If so you
can follow the
instructions and update alsa and pulse config.

double checked, works perfect.