mactel-support team mailing list archive

[Niels Ganser <niels@xxxxxxxxxx>]

Thanks, David.

linux-backports-modules-alsa-karmic does indeed fix the issue on my
Macbook 3,1 running karmic. The backport also fixes headphone detection
trouble, e.g. speakers are now reliably muted when something is plugged
into the headphone jack.

This can probably be closed as fix committed though ALSA still tracks
the issue as "new", presumably due to a lack of positive test reports.

-- 
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