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Hi I have installed mythtv on a computer and everyting works, except sound on live tv. I can see the picture but no sound. Music and video works ok. kdetv ...
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  1. #1
    Just Joined! feddersen's Avatar
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    Alsa/myth problem


    Hi
    I have installed mythtv on a computer and everyting works, except sound on live tv. I can see the picture but no sound. Music and video works ok.
    kdetv and xawtv also works with sound when i unmute line in

    I think i have isolated the problem somewhat,

    In gstreamer when i test default output plugin i get a error saying
    failed to construct test pipline for alsa

    when watching tv with xawtv with line in muted
    i try to run aplay /dev/dsp or /dev/adsp
    dsp gives me a error kode
    adsp gives out a lot of loud noise..

    When trying modprobe saa7134-alsa
    and then aplay /dev/dsp1 the sound is ok in xawtv, but still not in mythtv even when set to dsp1...

    HEEEELP MEEEE!!! Pleeeese

  2. #2
    Linux Engineer Zelmo's Avatar
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    MythTV doesn't appear to support alsa (as I learned the hard way). You'll need to load the alsa-oss modules:
    Code:
    # modprobe alsa-oss-pcm
    # modprobe alsa-oss-mixer
    Then the /dev/dsp setting in MythTV will work as it's supposed to.
    Stand up and be counted as a Linux user!

  3. #3
    Just Joined! feddersen's Avatar
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    Well don't have those modules.

    I think the problem might be with the dsp device... since it's not working with aplay. How can I fix that? or reinstall it or something..??

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  5. #4
    Just Joined! feddersen's Avatar
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    Here is something i tried.. It returns the same error as myth backend does when I watch tv..

    MediaPc:~ # cat /dev/dsp > /dev/dsp
    cat: /dev/dsp: Inn/ut-feil (Translation: In/out-error)
    MediaPc:~ #

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