I'm having this same problem on a MacBook 5,2 if I use:
model=mb5 Sound works after unmuting HP, but no headphones detection and no subwoofers model=mbp3 Headphones detection works, sound works but no subwoofers model=asus-a7m Headphone detection doesnt works, but subwoofers works and sound seems much cleaner. I'm with linux-backports-modules-alsa-karmic-generic installed, and no changes with that. Ubuntu Karmic 9.10 with alsa-backport MacBook 5,2 Don't know what kind of extra information is needed for this but I can inform if requested. Thanks. -- 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 “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 _______________________________________________ Mailing list: https://launchpad.net/~mactel-support Post to : [email protected] Unsubscribe : https://launchpad.net/~mactel-support More help : https://help.launchpad.net/ListHelp
