Hi!

You have probably come here because you have a problem with headphones not muting the internal speakers when inserted (or with headphones not unmuting the internal speakers when removed), and someone asked you to provide a codec dump. Here's how to do that:

 * Open a terminal, then enter these commands to kill PulseAudio:

{{{
echo autospawn = no >> ~/.pulse/client.conf
killall pulseaudio
}}}

 * Then enter this command with headphones '''removed''':

{{{
speaker-test -c2 -l3 -Dplug:front:0
}}}

 * Open a second terminal, and enter this command while the speaker-test in the first terminal continues to run:

{{{
cat /proc/asound/card*/codec* > ~/codec.no_hp.txt
}}}

 * Wait until the speaker-test has finished.
 * Insert headphones into the appropriate jack, and repeat the first step with speaker-test.
 * In the second terminal, modify the second step as follows while the speaker-test in the first terminal continues to run:

{{{
cat /proc/asound/card*/codec* > ~/codec.hp.txt
}}}

 * Open your Launchpad bug and attach the files ~/codec.no_hp.txt and ~/codec.hp.txt (in your home directory) to that message.
 * To return your system to a clean state again, edit ~/.pulse/client.conf with your favorite editor and remove the line "autospawn = no". If the file is now empty, you can just as well delete it. Then log out and log in again.

 * Last but not least - thanks for helping out!
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CategoryDebugging