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Thread: How to compare two machines for ALSA settings?

  1. #1
    Join Date
    Sep 2011
    Beans
    113

    How to compare two machines for ALSA settings?

    Folks,

    I have two machines with identical hardware - Intel DH67CL motherboard, keyboard, mouse, etc.

    I installed minimal version of Ubuntu 12.04 on one machine along with alsa-utils, configured alsa settings in alsa-mixer and checked the speaker output using the following command:

    $ speaker-test -c6 -Dsurround51 -t wav

    Each speaker was working as expected.

    I cloned the image using Clonezilla and installed on the other machine. On this machine, when I run speaker-test, I get only stereo sound.

    It seems something is different between the two setups. I am wondering how I can troubleshoot the difference. Is there a way to dump all the relevant alsa settings so that I can compare them? Or, is there a better way?

    Thank you in advance for your help.

    Regards,
    Peter

  2. #2
    Join Date
    Sep 2011
    Beans
    113

    Re: How to compare two machines for ALSA settings?

    I received a suggestion to create .asoundrc with the following settings:

    pcm.!default {
    type plug
    slave.pcm "surround51"
    slave.channels 6
    route_policy duplicate
    }

    I will try this. But as I understand, all this is doing is setting the default device so that I could use:

    $speaker-test -c6

    instead of

    $speaker-test -c6 -Dsurround51

    As I am using the latter form of speaker-test, does creating the above .asoundrc help?

    Appreciate your help.

    Regards,
    Peter

  3. #3
    Join Date
    Jun 2007
    Beans
    11,602

    Re: How to compare two machines for ALSA settings?

    I would grab alsa info from both machines and look at a diff of the two files. https://wiki.ubuntu.com/Audio/AlsaInfo

  4. #4
    Join Date
    Sep 2011
    Beans
    113

    Re: How to compare two machines for ALSA settings?

    Quote Originally Posted by Temüjin View Post
    I would grab alsa info from both machines and look at a diff of the two files. https://wiki.ubuntu.com/Audio/AlsaInfo
    Thank you very much. Good to know there is such a script out there.

    Regards,
    Peter

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