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I have Ubuntu 13.10 installed on my MacBook Pro 4,1 and it is working great. The only problem is that my broken speakers let out static all the time. I somehow broke the speakers while I was repasting the heatsinks a while back, and it isn't a big deal in OS X or Windows 7 because I can easily turn off the internal speakers by muting or plugging in headphones. The same doesn't work in Ubuntu, and the constant static had me so annoyed that I have added the snd_hda_intel and snd_hda_codec_realtek kernel modules to the blacklist to completely disable sound. Does anyone have a solution that will let me still use my headphones for music, just not the internal speakers?

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Try using alsamixer in terminal and see if you can mute it by pressing m.

Another possible solution:

A more involved possible work around. Type lspci in your terminal

Look for the audio controller responsible for sound. Find the PCI location of the device.

I was unable to edit these pci device without using su

echo -n "0000:00:1b.0" > /sys/bus/pci/drivers/"YOUR SOUND CONTROLLER"/unbind

"YOUR SOUND CONTROLLER" in my case was "snd_hda_intel" and "0000:00:1b.0" was my pci location. To rebind,

echo -n "0000:00:1b.0" > /sys/bus/pci/drivers/"YOUR SOUND CONTROLLER"/bind

Does it work? If so, then make a script that you can run that will enable/disable that pci location.

Another solution:

The idea is to keep the headphone jack permanently on, or to disable the internal speakers via pulseaudio. The documentation is not very easy to read but the location of these files are in

/usr/share/pulseaudio/alsa-mixer/paths/analog-output.conf.common

or

/usr/share/pulseaudio/alsa-mixer/paths/analog-output-headphones.conf

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  • I tried that before I blacklisted the modules, and it didn't work
    – Broseph
    Mar 23, 2014 at 0:27
  • Let me know how my update goes.
    – Mr.Lee
    Mar 23, 2014 at 0:34
  • should this do something immediately? Did you mean "enable"? I don't have a text file called "enabled", but I change the 1 in enable to a 0 and saved; nothing happened.
    – Broseph
    Mar 23, 2014 at 0:51
  • Derp, I gave you old information. In 14.04, it is "enabled" which isn't relevant to us anymore. Check out the edit again and let me know.
    – Mr.Lee
    Mar 23, 2014 at 1:19
  • lspci gave me the same pci device and controller as you, so I just did sudo su, then pasted your unbind line. No change. When I did it with bind, I got a little blip in the static output but that is all.
    – Broseph
    Mar 23, 2014 at 1:28

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