[mythtv-users] no audio after Nvidia driver install [SOLVED]

James Neff neffland at gmail.com
Mon Jun 15 19:41:41 UTC 2009

I fixed my problem.


This command did it for me:

/usr/bin/v412-ctl -d /dev/video0 --set-audio-input=1

For me, setting the audio-input=1 and using the 1600's audio input.

I don't know why it couldn't get audio from the coax in line but it at
least now it works.

I still have a couple of other minor issues, like slow channel
changing, but at least my audio and video works and I can change
channels on my DirecTv STB via my 1600's IR blaster.

Thanks for this list.

On Sun, Jun 7, 2009 at 10:20 PM, Nick Rout<nick.rout at gmail.com> wrote:
> On Mon, Jun 8, 2009 at 2:34 AM, James Neff<neffland at gmail.com> wrote:
>> On Sun, Jun 7, 2009 at 10:15 AM, Lindsay
>> Mathieson<lindsay.mathieson at gmail.com> wrote:
>>> On Sun, 7 Jun 2009 11:59:46 pm James Neff wrote:
>>>> Greetings,
>>>> New to MythTV using version 0.21, MythBuntu distro.  kernel 2.6.28-11
>>>> Hauppauge 1600 model 1178 using cx18-0 v4l-cx23418-apu.fw
>>>> nForce 2 motherboard w/ onboard audio AC97
>>>> video source is DirectTv to analog in on my Hauppauge 1600 board.
>>> How is you your sound output?
>>> - Analog ? (Stereo or 5.1 Jacks?)
>>> - Digitial (Optical or Coax?)
>>> - to an amp?
>>> - to your TV?
>> Analog from motherboard embedded sound controller, stereo.  It is a
>> shared port so if I did have 5.1 it would use the same port plus the
>> line out and mic I think for 5.1.  Eventually I would like to use 5.1.
>>  If I plug stereo headphones into the green jack (analog) then I can
>> hear from Play DVD and from the command line aplay.
>> No digital, no amp.
>> To TV goes from analog out (green jack) to RCA converter in wire into
>> TV switch RCA in.  TV switch has analog coax (300 ohm I think?) to
>> very old TV.  Playing DVD I can hear audio from TV but not "Watch TV"
>> from myth.
>> Thanks!
> Are you using an hdmi connector to your tv? If so the nvidia driver
> may be inserting a null audio feed into the dvi/hdmi stream. This can
> fool the tv into thinking it has an hdmi audio feed and turning off
> the RCA inputs.
> If that is the problem, see this thread.
> http://www.gossamer-threads.com/lists/mythtv/users/373493#373493
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