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Thread: Sound device not recognized by Alsa

  1. #1
    Join Date
    Oct 2012
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    Question Sound device not recognized by Alsa

    Hi,

    I'm having an odd problem with my sound card. When I start the laptop I usually don't have sound. It sometimes comes back after some reboots. This is not happening in windows in which it always works fine.

    I run the Alsainfo thing when sound was not recognized and got this:

    http://www.alsa-project.org/db/?f=8d...8f8cfc793b1d10

    Does anybody know what's happening here and how to solve it?

    Many thanks.

  2. #2
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    Xubuntu Development Release

    Re: Sound device not recognized by Alsa

    Take a look at this: Sound Troubleshooting Guide
    It can be of some help solving your problem.

  3. #3
    Join Date
    Oct 2012
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    Re: Sound device not recognized by Alsa

    Thanks Slicky,

    I'll try that guide.

    Meanwhile, here's the Alsainfo when the sound is working:

    http://www.alsa-project.org/db/?f=61...dbef27a5c2e3aa

  4. #4
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    Re: Sound device not recognized by Alsa

    ftella, see this thread: No sound, ALSA problems, ac'97 not recognized

    It's a similar issue with a similar AC'97 Sound Controller.

  5. #5
    Join Date
    Oct 2012
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    Re: Sound device not recognized by Alsa

    Hi again,

    I was following some steps mentioned in your last post and I think I left Pulseaudio misconfigured.

    Particulary after typing this, I think:

    Code:
    echo "load-module module-alsa-sink device=hw:[SiS SI7012],[SiS SI7012]" | sudo tee -a /etc/pulse/default.pa
    Later I noticed that maybe I should have typed 0,0 instead of [SiS SI7012],[SiS SI7012]

    The sound was working at that moment and suddenly it stopped. When I right click at the sound icon and click on "Volume Control" settings I get a message like this:

    Connection to PulseAudio failedAutomatic retry in 5s.
    In this case this is likely because PULSE_SERVER in the Environment/X11 Root Window Properties or default-server in client.conf is misconfigured.
    This situation can also arrise when PulseAudio crashed and left stale details in the X11 Root Window. If this is the case, then PulseAudio should autospawn again, or if this is not configured you should run start-pulseaudio-x11 manually.
    What can I do now? Thanks

  6. #6
    Join Date
    Jun 2007
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    12,736

    Re: Sound device not recognized by Alsa

    It should have been 0,0, so get rid of or edit the line you added (it's at the end of the file):
    Code:
    gksu leafpad /etc/pulse/default.pa
    When you're done, restart pulse:
    Code:
    rm -r ~/.pulse*; pulseaudio -k

  7. #7
    Join Date
    Oct 2012
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    19

    Re: Sound device not recognized by Alsa

    Today, after booting, the sound icon in the toolbar is gone (the "volume control" item is in the list though).

    After that I changed that line and did what you said:

    Code:
    rm -r ~/.pulse*; pulseaudio -k
    E: [pulseaudio] main.c: Failed to kill daemon: No such process

    Restarting didn't change anything.

    Also tried this:

    Code:
    lspci | grep audio
    00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] SiS7012 AC'97 Sound Controller (rev a0)
    Also this:

    Code:
    echo "Sound cards recognized by the system:"; lspci -nn | grep --color=none '\[04[80][13]\]'; echo "Sound cards recognized by ALSA:"; lspci -nn | grep '\[04[80][13]\]' | while read line; do lspci -nnk | grep -A 3 '\[04[80][13]\]' | grep -e 'Kernel modules: ..*' -e '\[04[80][13]\]' | grep --color=none -F "$line"; done; echo "Sound cards recognized by ALSA, and activated:"; lspci -nn | grep '\[04[80][13]\]' | while read line; do lspci -nnk | grep -A 3 '\[04[80][13]\]' | grep -e 'Kernel drivers in use: ..*' -e '\[04[80][13]\]' | grep --color=none -F "$line"; done
    Sound cards recognized by the system:
    00:02.7 Multimedia audio controller [0401]: Silicon Integrated Systems [SiS] SiS7012 AC'97 Sound Controller [1039:7012] (rev a0)
    Sound cards recognized by ALSA:
    00:02.7 Multimedia audio controller [0401]: Silicon Integrated Systems [SiS] SiS7012 AC'97 Sound Controller [1039:7012] (rev a0)
    Sound cards recognized by ALSA, and activated:
    00:02.7 Multimedia audio controller [0401]: Silicon Integrated Systems [SiS] SiS7012 AC'97 Sound Controller [1039:7012] (rev a0)
    And this:

    Code:
    aplay -l
    aplay: device_list:252: no soundcards found...
    Last edited by ftella; April 29th, 2013 at 09:43 AM.

  8. #8
    Join Date
    Oct 2012
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    19

    Re: Sound device not recognized by Alsa

    I tried this after:

    Code:
    sudo apt-get install --reinstall libasound2 
    sudo dpkg-reconfigure pulseaudio 
    sudo dpkg-reconfigure alsa-base
    
    rm -rf ~/.pulse
    Restarted and now the icon is back, but it's still giving the same error message:

    Connection to PulseAudio failedAutomatic retry in 5s...

  9. #9
    Join Date
    Oct 2012
    Beans
    19

    Re: Sound device not recognized by Alsa

    Ok, I deleted the line from "/etc/pulse/default.pa" instead of editing it and got sound after rebooting.

    Let's test some more. At least it's like at the beggining.

  10. #10
    Join Date
    Oct 2012
    Beans
    19

    Re: Sound device not recognized by Alsa

    So let's resume this troubleshooting.

    When audio is not working I tried this:

    Code:
    aplay -l | grep card
    aplay: device_list:252: no soundcards found...
     lspci | grep audio
    00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] SiS7012 AC'97 Sound Controller (rev a0)
    So it looks like it has an audio controller but no sound card found. Maybe this doesn't have to do with sound drivers. (It could also be that I don't know what I'm looking at).

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