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Ubuntu 64 quantal vs. Macbook audio
Posted November 27, 2012

No sound?

echo 'options snd-hda-indel model=mbp55' | sudo tee -a /etc/modprobe.d/alsa-base.conf
sudo killall -9 pulseaudio; sudo modprobe -r snd-hda-intel

Plugging in headphones mutes speakers but does not produce sound in headphones? Sound settings window reveals that the headphone sound begins if you select the "analog output" device, but pulseaudio automatically switches back to the "headphone output" output device when you plug in the headphones?

sudo cp -ip /usr/share/pulseaudio/alsa-mixer/paths/analog-output-headphones.conf{,.original}
sudo cp /usr/share/pulseaudio/alsa-mixer/paths/analog-output-{speaker,headphones}.conf
sudo perl -pi~ -e 's/(priority = )100/${1}90/; s/output-speaker/output-headphones\n\n[Jack InputDevice]\ncode = Headphone\n/' \
     /usr/share/pulseaudio/alsa-mixer/paths/analog-output-speaker.conf
reboot

(From Sound muted after connecting headphones in ubuntu 11.10)

I have:

  • Ubuntu quantal 64-bit desktop
  • Linux 3.5.0-18-generic #29-Ubuntu SMP Fri Oct 19 10:26:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
  • Apple Inc. MacBook2,1 06/27/07
  • hda_codec: STAC922x, Apple subsys_id=106b2200
  • HDA Intel Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input11