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Thread: Dummy output - No Sound Card Detected / snd-hda-intel - (Karmic)

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  1. #1
    Join Date
    Nov 2009
    Ubuntu 10.04 Lucid Lynx

    Dummy output - No Sound Card Detected / snd-hda-intel - (Karmic)

    After so many many attempts to solve my audio problems when upgrading to Karmic, I finally found a working solution !

    First, let me decribe what the problem was:
    1) no audio card was detected at all
    => cat /proc/asound/cards returned an empty content
    => cat /proc/asound/devices did not include any audio devices
    => 'Hardware' tab in sound preferences was empty
    2) the audio tray indicated a "dummy output"


    For those who do not have a fresh Karmic install (in other words those who have upgraded their Jaunty install), you should update your Grub BEFORE applying the 2 steps described hereunder:

    sudo update-grub

    Step1: make the sound card being recognized

    => Purge alsa-base and pulseaudio, eg:

    sudo apt-get remove --purge alsa-base
    sudo apt-get remove --purge pulseaudio
    sudo apt-get install alsa-base
    sudo apt-get install pulseaudio
    sudo alsa force-reload

    Now, reboot, you shoud now SEE (but maybe not yet hear) your soundcard.
    Give a try to:
    cat /proc/asound/cards
    and see if any card is listed...

    Step2 : If the sound is crapy, you MAY have to edit the alsa config file:

    sudo gedit /etc/modprobe.d/alsa-base.conf

    a) comment (#) the following line:
    # options snd-hda-intel power_save=10 power_save_controller=N

    b) Add a new line
    options snd-hda-intel probe_mask=1 model=hp

    Replace "hp" with appropriate computer model. See here

    Good luck !

    Last edited by TacheDeChoco; December 26th, 2010 at 09:59 AM.


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