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[Bug 305750] Re: Subwoofer not working in Intel Macbooks

 

** Changed in: mactel-support
     Assignee: (unassigned) => Sergiojose (sjmp93)

** Changed in: mactel-support
     Assignee: Sergiojose (sjmp93) => (unassigned)

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Subwoofer not working in Intel Macbooks
https://bugs.launchpad.net/bugs/305750
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Status in ALSA driver: Unknown
Status in Mactel Support: Confirmed
Status in “linux” package in Ubuntu: Fix Committed
Status in “linux-backports-modules-2.6.31” package in Ubuntu: Fix Released

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



References