mactel-support team mailing list archive

[Niels Ganser <niels@xxxxxxxxxx>]

A fix for MacBook 3,1 has now been applied to the ALSA codebase. It's
commit 4afdf938d581df426de5161b33899db1f95b88de in alsa-kernel. E.g.
http://git.alsa-project.org/?p=alsa-
kernel.git;a=commit;h=4afdf938d581df426de5161b33899db1f95b88de

Would anyone like to take a stab at backporting this patch to ALSA
1.0.18 so it can be put into jaunty-updates?

-- 
Subwoofer not working in Intel Macbooks
https://bugs.launchpad.net/bugs/305750
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” package in Ubuntu: New

Bug description:
Upon installation of Ubuntu 8.10, sound can be enabled by adding
"options snd_hda_intel model=mbp3" 
to /etc/modprobe.d/options
(This is needed due to a detection issue, but that is another bug)
After rebooting, the sound does work, but there is no sound from the Macbook's built-in subwoofer which makes the sound very poor sounding in comparison to how it sounds in OSX. This difference puts Ubuntu in a bad light. Users often complain about "tinny" or "poor quality" sound.

This is specifically occurring on Macbook4,1 models (and likely Macbook3,1 as well)

Reference:
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4086
http://sourceforge.net/mailarchive/message.php?msg_name=4935B32D.3060501%40forestfactory.de