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Thread: The hell that is HDMI audio 10.10

  1. #1
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    The hell that is HDMI audio 10.10

    Good Morning

    I am trying to get HDMI working and not winning YET!
    The pic works bueatifully. The sounds is no existant

    Right working through http://www.mythtv.org/wiki/Digital_Audio_Tutorial
    I cannot find /etc/asound.conf?????

    To fill in the details
    NVidia Geforce 210 GPU
    Drive version 260.190.06
    VBIOS cersion 70.18.66.00.0b
    Mythtv installed over Xubuntu 10.10 from Software centre (not Mythbutnu 10.10) fully updated but not connected tot he net at the moment

    Working through http://www.mythtv.org/wiki/Digital_Audio_Tutorial
    Alasmixer version 1.0.23
    2 sound cards
    0 = HDA Intel
    1 = HDA NVidia
    Code:
    amixer set 'IEC958 Playback AC97-SPSA' 0
    unable to find simple control 'IEC958 Playback AC97-SPSA', 0
    Code:
    aplay -l
    Card 1:NVidia [HDA NVidia] device (3,7,8 and 9) NVidia HDMI [NVIDIA HMDI] Subdevices:1/1
    Code:
    sudo nano /etc/asound.conf
    brings up an empty page

    Code:
    locate asound.conf
    /usr/share/doc/libsound2/examples/asound.conf_jack
    /usr/share/doc/libsound2/examples/asound.conf_oss
    It would appear that asound.conf is missing.

    What have I done wrong to not have an asound.conf and where do i get one from, or how do I get one to generate????

    cheers
    chipppy
    Ubuntu 12.04/ Dual Boot (Windows)
    Xubutu 10.10 RAID 5 with MythTV installed on top
    Netbook respin 11.04

  2. #2
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    Re: The hell that is HDMI audio 10.10

    You shouldn't need a asound.conf
    Have you made sure you have unmuted digital audio in alsamixer?
    Are you using 0.24.x? If so, scan for audio devices in the genrela Mythtv frontend setup. Use the arrow keys to change the selection to the appropriate HDMI audio output.

  3. #3
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    Re: The hell that is HDMI audio 10.10

    I have the same card (GT210)
    Easiest thing I found was do this. Turn off your onboard audio in the BIOS. Gives you less options to be messing with when trying to get it up and going. After that, open up a console and run
    Code:
    alsamixer
    To start with, just unmute everything in there and turn it up to a decent level. You can mute what you don't need later. After that, go into mythfrontend, head to settings -> setup -> General
    The 4th page there should be for sound settings, press the scan for audio devices button, then scroll through the options til you see one that says something about either 'Nvidia' or 'HDMI' and hopefully something down the bottom about 'AC3, 5.1/7.1' that sort of thing. Go through the rest of the screens to finish that section, just leave as it is.
    If that card doesn't work, try the next one in the list and so on.

  4. #4
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    Re: The hell that is HDMI audio 10.10

    Hey chipppy, I have a 310M which may be similar to yours. This thread solved my problems with audio over HDMI.

    Note that you don't have to actually do the modprobe and initramfs thing. If you get the right device, you can set it on player, and you are good to go (in my case was plughw:NVidia,9)

    Hope it helps,
    Regards.

  5. #5
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    Re: The hell that is HDMI audio 10.10

    Good Morning

    K I have everything turned on in the audiomixer and alsamixer (terminal) and at 100%

    Went into Setup ==> General ==>page 4

    Changed to both
    ALSA:HDMI and ALSAlughw 0,3
    Speaker configurations:Stereo and 5.1

    Still no luck.
    I have noticed that I cannot increase the volume from 0 now using either the ] (volume increase) or \ (mute/unmute) keys.

    I am thinking that both are linked somehow and that if I cannot get the volume off 0 then I will not be able to confirm which settings are working.

    Any ideas how to fix the stuck on 0 volume issue???

    Cheers
    chipppy
    Ubuntu 12.04/ Dual Boot (Windows)
    Xubutu 10.10 RAID 5 with MythTV installed on top
    Netbook respin 11.04

  6. #6
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    Re: The hell that is HDMI audio 10.10

    Quote Originally Posted by chipppy View Post
    Good Morning

    K I have everything turned on in the audiomixer and alsamixer (terminal) and at 100%

    Went into Setup ==> General ==>page 4

    Changed to both
    ALSA:HDMI and ALSAlughw 0,3
    Speaker configurations:Stereo and 5.1

    Still no luck.
    I have noticed that I cannot increase the volume from 0 now using either the ] (volume increase) or \ (mute/unmute) keys.

    I am thinking that both are linked somehow and that if I cannot get the volume off 0 then I will not be able to confirm which settings are working.

    Any ideas how to fix the stuck on 0 volume issue???

    Cheers
    chipppy
    you cannot change the volume in a digital connection unless you use the software miser (and that leads to your nice digital audio being resampled).

  7. #7
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    Re: The hell that is HDMI audio 10.10

    Good Afternoon

    I am a lot lost now.
    you cannot change the volume in a digital connection
    So how do I change the volume of the movie that I am playing?

    I have a HDMI cable going from the NVidia card to the HDMI input on a Panasonic Vieta 50" Plasma TV.

    Am I supposed to get the audio via the same HDMI cable or through some other cable?

    Have I missed something here?

    Cheers
    chipppy
    Ubuntu 12.04/ Dual Boot (Windows)
    Xubutu 10.10 RAID 5 with MythTV installed on top
    Netbook respin 11.04

  8. #8
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    Re: The hell that is HDMI audio 10.10

    Quote Originally Posted by chipppy View Post
    Changed to both
    Code:
    ALSA:HDMI and ALSA:plughw 0,3
    Speaker configurations:Stereo and 5.1
    That is card 0 (Intel), not the Nvidia HDMI. From you previous command, it should be one of these 4:
    Code:
    ALSA:plughw 1,3
    ALSA:plughw 1,7
    ALSA:plughw 1,8
    ALSA:plughw 1,9
    Did you try the test suggested on that tutorial? If not, run a demo sound for each device to test if the sound is being transmitted to the TV:
    Code:
    aplay -D plughw:1,3 /usr/share/sounds/alsa/Front_Center.wav
    aplay -D plughw:1,7 /usr/share/sounds/alsa/Front_Center.wav
    aplay -D plughw:1,8 /usr/share/sounds/alsa/Front_Center.wav
    aplay -D plughw:1,9 /usr/share/sounds/alsa/Front_Center.wav
    Regards.

  9. #9
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    Re: The hell that is HDMI audio 10.10

    Quote Originally Posted by chipppy View Post
    Good Afternoon

    I am a lot lost now.

    So how do I change the volume of the movie that I am playing?
    use the volume control for the tv

    I have a HDMI cable going from the NVidia card to the HDMI input on a Panasonic Vieta 50" Plasma TV.

    Am I supposed to get the audio via the same HDMI cable or through some other cable?
    you should get audio through the hdmi cable.

    Have I missed something here?

    Cheers
    chipppy

    If you have /etc/asound.conf, change its name or delete it if you are confident you can remember what is in it. Similarly ~/.asoundrc for the user running the frontend.

    in mythtv settings|general on the audio config page select "scan for audio devices" and then choose the appropriate one.

    That's all there is to it.

  10. #10
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    Re: The hell that is HDMI audio 10.10

    Good Evening

    aplay -D plughw:1,3 /usr/share/sounds/alsa/Front_Center.wav
    aplay -D plughw:1,7 /usr/share/sounds/alsa/Front_Center.wav
    aplay -D plughw:1,8 /usr/share/sounds/alsa/Front_Center.wav
    aplay -D plughw:1,9 /usr/share/sounds/alsa/Front_Center.wav
    1,7 1,8 1,9 work find but 1,3 fails

    If you have /etc/asound.conf, change its name or delete it if you are confident you can remember what is in it. Similarly ~/.asoundrc for the user running the frontend.
    I did make a asound.conf to try and fix this problem, it didnt help. It is currently named asound.conf.test1. There is no ~/.asoundrc in my system

    Are you using 0.24.x? If so, scan for audio devices in the genrela Mythtv frontend setup. Use the arrow keys to change the selection to the appropriate HDMI audio output.
    Nope using 0.23.1 + fixes26437 (from Synaptic) ontop of Xubuntu 10.10.
    I cannot find anything that looks like a 'scan for audio devices'

    Any other ideas

    Cheers
    chipppy
    Ubuntu 12.04/ Dual Boot (Windows)
    Xubutu 10.10 RAID 5 with MythTV installed on top
    Netbook respin 11.04

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