Is there really a difference between the alsa-driver 1.0.19 patch and
using the 1.0.18 alsa-base that's in the repositories with the mbp3 set
as model in /etc/modprobe.d/

I'm using the mbp3 option with a MBP5,2 and the sound works fine.
However it is still quiet on the speaker, much quieter than in Mac OS X.
I've used also the patched 1.0.19 version and there didn't seem to be
any difference, just that no option needed to be set in /etc/modprobe.d/

-- 
Left speaker doesn't work, controls mixed up on Apple MacBook[Pro] (5,1)
https://bugs.launchpad.net/bugs/337314
You received this bug notification because you are a member of Mactel
Support, which is the registrant for Mactel Support.

Status in ALSA driver: Unknown
Status in Mactel Support: Confirmed
Status in “alsa-driver” source package in Ubuntu: New

Bug description:
Reporting this bug for another user...

In MacBook and MacBookPro 5,1 (aluminium, late 2008) the soundcard works out of 
the box only with headphones, and to turn speakers on it is necessary to 
manually set the 6 channels. In that case, sound is heard both on headphones 
and right and center speaker; the left speaker doesn't work yet.

This bug is confirmed by several users, see the additional information attached.

de...@raker:~$ lspci | grep -i audio
00:08.0 Audio device: nVidia Corporation MCP79 High Definition Audio (rev b1)
de...@raker:~$ grep Codec /proc/asound/card0/codec#*
Codec: Realtek ALC889A

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