Only specific video modes of the HDMI framer device support audio. See the wiki
page.
> On Mar 22, 2016, at 10:44 AM, yolc...@gmail.com wrote:
>
> After work with a multitouch screen for the BeagleBone Black, now I just want
> to play audio/sounds through the HDMI connection as the multitouch screen has
> a speaker.
>
>
>
> First of all, I just copied an audio sample, and try to reproduce it by
> 'vlc', but next message is shown:
>
> "Audio output failed. The audio device "default" could not be used. No
> such file or directory."
>
>
>
> Then, I have installed next tools:
>
> 'alsa-base', 'alsa-utils', 'alsa-tools', 'alsamixergui'
>
>
>
> But, when I tried to launch 'alsamixergui', the next message is shown:
>
> "alsamixer: function snd_ctl_open failed for default: No such file or
> directory"
>
>
>
> And at "/etc/modprobe.d/alsa-base.conf", the content is:
>
> # autoloader aliases
>
> install sound-slot-0 /sbin/modprobe snd-card-0
>
> install sound-slot-1 /sbin/modprobe snd-card-1
>
> install sound-slot-2 /sbin/modprobe snd-card-2
>
> install sound-slot-3 /sbin/modprobe snd-card-3
>
> install sound-slot-4 /sbin/modprobe snd-card-4
>
> install sound-slot-5 /sbin/modprobe snd-card-5
>
> install sound-slot-6 /sbin/modprobe snd-card-6
>
> install sound-slot-7 /sbin/modprobe snd-card-7
>
> # Cause optional modules to be loaded above generic modules
>
> install snd /sbin/modprobe --ignore-install snd && { /sbin/modprobe
> --quiet snd-ioctl32 ; /sbin/modprobe --quiet snd-seq ; : ; }
>
> install snd-rawmidi /sbin/modprobe --ignore-install snd-rawmidi && {
> /sbin/modprobe --quiet snd-seq-midi ; : ; }
>
> install snd-emu10k1 /sbin/modprobe --ignore-install snd-emu10k1 && {
> /sbin/modprobe --quiet snd-emu10k1-synth ; : ; }
>
> # Keep snd-pcsp from beeing loaded as first soundcard
>
> options snd-pcsp index=-2
>
> # Keep snd-usb-audio from beeing loaded as first soundcard
>
> options snd-usb-audio index=-2
>
> # Prevent abnormal drivers from grabbing index 0
>
> options bt87x index=-2
>
> options cx88_alsa index=-2
>
> options snd-atiixp-modem index=-2
>
> options snd-intel8x0m index=-2
>
> options snd-via82xx-modem index=-2
>
>
>
> Moreover, I have try with next commands:
>
> 'alsamixer -c 1 (2, 3... 7)'
>
> Having next output:
>
> "invalid card index: 1"
>
>
>
> Is there any way to reproduce any sound (*.midi, *.wav, *.mp3...) through
> hdmi easily?
>
> --
> For more options, visit http://beagleboard.org/discuss
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