Comment 6 for bug 396563

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Tony Espy (awe) wrote :

I can confirm that this is broken ( ie. plugging headphones mutes speakers, but has no headphone out ) for my system too ( Macbook Pro 3,1 / Santa Rosa ). I checked all of the ALSA mixer controls, and wasn't able to get the headphones working by toggling any of the settings and/or raising any of the levels.

I'm currently running the latest & greatest Karmic bits.

kernel is: 2.6.31-4

Please see attached alsa-info.txt

Note, I tried adding "model=mbp3" to the alsa options in /etc/modprobe.d/alsa-base.conf, but it made no difference.