[mythtv-users] M4N78 Pro and sound over HDMI

Wayne Thomas waynethomas69 at gmail.com
Mon Apr 12 18:08:38 UTC 2010


On Sun, Apr 11, 2010 at 5:38 PM, Jongi <jongitech at gmail.com> wrote:
> MythTV on Debian Unstable running 0.22+fixes20100218-0.1 (kernel 2.6.31.13)
>
> The TV is a Samsung  -
> http://www.samsung.com/za/consumer/tv/television/lcd-tv/LA32B530P7RXZN/index.idx?pagetype=prd_detail&returnurl=
>
> I am trying to get sound over to play over HDMI on my M4N78 Pro mobo
> (http://www.asus.com/product.aspx?P_ID=lco8LZWTqWIhdLmv).
>
> I have both ~/,asoundrc and /etc/asound.conf with:
> pcm.!default {
> type hw
> card 0
> device 3
> }
>
> pcm.!default {
> type plug
> slave.pcm "hdmi"
> }
>
> My alsamixer settings look like so -
> http://img91.imageshack.us/img91/4816/alsamixer.jpg
>
> Aplay returns:
>
> $ aplay -l
> **** List of PLAYBACK Hardware Devices ****
> card 0: NVidia [HDA NVidia], device 0: VT1708S Analog [VT1708S Analog]
>  Subdevices: 2/2
>  Subdevice #0: subdevice #0
>  Subdevice #1: subdevice #1
> card 0: NVidia [HDA NVidia], device 1: VT1708S Digital [VT1708S Digital]
>  Subdevices: 1/1
>  Subdevice #0: subdevice #0
> card 0: NVidia [HDA NVidia], device 3: NVIDIA HDMI [NVIDIA HDMI]
>  Subdevices: 1/1
>  Subdevice #0: subdevice #0
>
> $ aplay -L
> null
>    Discard all samples (playback) or generate zero samples (capture)
> front:CARD=NVidia,DEV=0
>    HDA NVidia, VT1708S Analog
>    Front speakers
> surround40:CARD=NVidia,DEV=0
>    HDA NVidia, VT1708S Analog
>    4.0 Surround output to Front and Rear speakers
> surround41:CARD=NVidia,DEV=0
>    HDA NVidia, VT1708S Analog
>    4.1 Surround output to Front, Rear and Subwoofer speakers
> surround50:CARD=NVidia,DEV=0
>    HDA NVidia, VT1708S Analog
>    5.0 Surround output to Front, Center and Rear speakers
> surround51:CARD=NVidia,DEV=0
>    HDA NVidia, VT1708S Analog
>    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
> surround71:CARD=NVidia,DEV=0
>    HDA NVidia, VT1708S Analog
>    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
> iec958:CARD=NVidia,DEV=0
>    HDA NVidia, VT1708S Digital
>    IEC958 (S/PDIF) Digital Audio Output
> hdmi:CARD=NVidia,DEV=0
>    HDA NVidia, NVIDIA HDMI
>    HDMI Audio Output
>
> I have been trying to play using mplayer using the following options:
> mplayer -ao alsa:device=hdmi <file>
> mplayer -ao alsa:device=hw=0.3 (file>
> mplayer <file>
>
> The mplayer config file looks like
> # Write your default config options here!
> #ao=alsa:device=hdmi
> vo=xv,
> vo=vdpau,xv,
> vc=ffh264vdpau,ffmpeg12vdpau,ffwmv3vdpau,ffvc1vdpau,
> #lavdopts:threads=2
> lavdopts=fast=1:threads=2
> stop-xscreensaver=1
>
> Any ideas why I can't hear audio?
>
> Regards,
> Jongi
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>

Unless I am remembering incorrectly, the M4N78 Pro Audio Chipset isn't
fully supported under 2.6.31.  A friend has this motherboard and uses
the SPDIF audio out.  I had to upgrade the kernel to 2.6.32 in order
to get it working.

Cheers
Wayne


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