[mythtv-users] HDMI – no audio GT210

Kingsley Turner krt at krt.com.au
Tue Jun 21 20:08:48 UTC 2016

On 20/06/16 16:22, Stephen Worthington wrote:
> On Mon, 20 Jun 2016 02:49:59 +0100, you wrote:
>> On 20 June 2016 at 02:32, Barry Martin <barry3martin at gmail.com> wrote:
>>> Hi Folks!
>>> Have been trying to figure out why I cannot get audio from my Mythbuntu
>>> Frontend. OS = 16.04, HDMI card = GeForce 210 32- and 64-bit (same card, two
>>> different Frontends). “Groups“ does list 'audio'.
>>> With the 32-bit FE I have found there is no “Sounds” Icon in Settings
>>> Manager (at Desktop) – this seems significant. Tried a bunch of on-line
>>> articles to fix/correct/re-install. Nothing. (I haven't checked to see if
>>> the 64-bit Frontend has the same missing icon.)
>>> aplay -l does list both sound cards (built in and added HDMI):
>>> Card 0 = Nvidia, device 3, 7, 8, 9
>>> Card 1 = ICH9, device 0 and 4
>>> Modified /etc/asound.conf a few ways to try all four Nvidia device options,
>>> as well as a few-line config file. speaker-test -Dplug:hdmi -c2 -twav seems
>>> to be happy (displays “Front left., Front right”) but no audio heard. aplay
>>> -D hw:0,3 /usr/share/sounds/alsa/Noise.wav also displays to the screen but
>>> no sound.
>> When setting up an old Geforce 210 a few years ago (on Debian, fwiw)
>> the card's HDMI output was muted by default and unmuting it in a mixer
>> application got it working.
>> Not saying it will work for you, but it's worth a try. Sometimes it's
>> the simple things...
> Yes, a look at alsamixer's output can reveal all sorts of interesting
> things.  When using SPDIF output, I always have to unmute it before it
> will work.  And then sometimes the automatic "alsactl save" does not
> seem to happen, so I find it a good idea to do that after I have
> everything working.

I have had a similar problem - it turned out that the HDMI audio was muted 
(in alsamixer), but in (Mythbuntu 12.x) the audio device was not labelled as 
'HDMI', but as something else.  I made a post about it at the time to this list.

I'm not sure this is applicable to your situation, as your are a few 
versions later than this, but it is something to check.

I don't think modifying any alsa config file is necessary these days.


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