[mythtv-users] No HDMI audio

Allen Edwards allen.p.edwards at gmail.com
Tue Jun 23 13:52:23 UTC 2009

On Tue, Jun 23, 2009 at 2:24 AM, Jim Stichnoth <stichnot at gmail.com> wrote:

> Sorry for yet another digital audio thread.
> I can't get any audio whatsoever to go through my HDMI connection.
> Here are some details of my setup:
>  - Gigabyte GA-E7AUM-DS2H motherboard
>  - MythDora 10.21 (kernel
>  - alsa 1.0.20
>  - nvidia driver 180.51
>  - Vizio TV model VW32L
> The alsa version is a little weird.  "yum list alsa\*" shows version
> 1.0.20-1.fc10 of alsa-lib.i386, alsa-lib-devel.i386, and
> alsa-utils.i386, yet "cat /proc/asound/version" gives 1.0.18a.
> I even went so far as to disable onboard audio in the BIOS setup,
> leaving HDMI audio enabled.  Here are the results of aplay:
> $ aplay -l
> **** List of PLAYBACK Hardware Devices ****
> card 0: NVidia [HDA NVidia], device 3: NVIDIA HDMI [NVIDIA HDMI]
>  Subdevices: 1/1
>  Subdevice #0: subdevice #0
> $ aplay -L
> hdmi:CARD=NVidia
>    HDMI Audio Output
> null
>    Discard all samples (playback) or generate zero samples (capture)
> Alsamixer shows just one control, IEC958, and I have unmuted it.
> No audio with Myth.  No audio with something like "mplayer -ao
> alsa:device=hdmi -afm hwac3 1071_20090620215900.mpg".  No audio with
> "speaker-test -D hdmi -c 2".  I tried following Allen's tips in
> http://www.mythtv.org/wiki?title=AllensDigitalAudioHowto (but at 2:00
> in the morning I'm not sure I tried every combination).  Pulseaudio
> appears not to be installed except for pulseaudio-libs.
> Interestingly, if I ctrl-alt-F2 to switch into a console window, aplay
> says there are no devices.  I wonder why is that?
> Any suggestions on how to proceed?  Does anyone have positive
> experience with HDMI audio on this motherboard, the Gigabyte
> Jim

A simple test is to set alsa up with

  pcm.!default {
     type plug
     slave.pcm "hdmi"

and put a CD in and issue this command

mplayer -cache 500 -cdrom-device /dev/cdrom cdda://

Also, don't ignore settings in your TV.  It would be great if you had
another hdmi device to use to test the TV.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mythtv.org/pipermail/mythtv-users/attachments/20090623/6de970dc/attachment.htm>

More information about the mythtv-users mailing list