Comment 16 for bug 337947

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P. Dunbar (vigilcode) wrote :

the patch posted in this bug https://bugs.edge.launchpad.net/ubuntu/+source/alsa-driver/+bug/337314
resolves the issue listed here:

"There is no sound output for MacBook 5.1 for Jaunty (Ubuntu 9.04) as of Alpha 5 unless "options snd_hda_intel model=mbp3" is added manually to /etc/modprobe.d/options. Adding this should not be required."

With the patch sound is working without any additional options in the option file on mbp5,1 and 5,2