"options snd_hda_intel model=mbp3" This is posted to the end alsa bug report, but I figure since I wrote it, then I should be able to post it where ever I like :)
On my Macbook 4,1, running a stock Ubuntu 8.10, kernel 2.6.27-11-generic, alsa version 1.0.17 The magic options bit that makes bass work on mine is a kernel option when inserting the snd_hda_intel module: model=asus-a7m The PCM level seems to control some(all, maybe) of the bass woofer. I'm not sure if all of the woofer is entirely all there though. Might be, would need to get two macbooks next to each other with the same piece of music to see. My hunch is that it isn't. Its more bassy than than the auto detected config, however. To make this change permanent, do this sudo gedit /etc/modprobe.d/options Add the line: "options snd_hda_intel model=asus-a7m" Save, Quit Reboot Sound should work. I'm not promising that it's perfect, either. I have no idea about recording, or iec playback, or even if plugging in a headset turns off the speakers, or causes global thermonuclear war, only that it increases the bass somewhat. -- 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” source 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 _______________________________________________ Mailing list: https://launchpad.net/~mactel-support Post to : [email protected] Unsubscribe : https://launchpad.net/~mactel-support More help : https://help.launchpad.net/ListHelp
