[mythtvnz] No HDMI sound output in desktop (Mythtv ok)

[Paulgir]

On Sun, 15 Jun 2014 15:48:25 +1200, Stephen Worthington  
<stephen_agent at jsw.gen.nz> wrote:

> On Sun, 15 Jun 2014 15:08:38 +1200, you wrote:
>
>> On Sun, 15 Jun 2014 14:56:33 +1200, Stephen Worthington
>> <stephen_agent at jsw.gen.nz> wrote:
>>
>>> On Sun, 15 Jun 2014 13:55:31 +1200, you wrote:
>>>
>>>> On Thu, 12 Jun 2014 11:52:32 +1200, Paulgir <paulgir at gmail.com> wrote:
>>>>
>>>>>
>>>>>
>>>>> Hi all
>>>>>
>>>>> I have been trying to get HDMI sound back for the Mythbuntu desktop  
>>>>> by
>>>>> modifying asound.conf.
>>>>> It seems,looking at my notes that,
>>>>>
>>>>> pcm.!default {
>>>>> 	type hw
>>>>> 	card 1
>>>>>            device 9
>>>>> }
>>>>>
>>>>> worked in the past but it does not now.
>>>>>
>>>>> The command speaker-test -c 2 -D hdmi:CARD=NVidia,DEV=3  Will give me
>>>>> sound through the speakers.But speaker-test -c 2   won't and I get
>>>>> nothing
>>>>> when using a browser or VLC.
>>>>> I've tried different numbers for Device= and looked at lots of  
>>>>> threads
>>>>> but
>>>>> I'm not having much luck.One question: do I need to reboot after
>>>>> modifying
>>>>> asound.conf?
>>>>>
>>>>> Cheers  Paul
>>>>
>>>>
>>>> Any help?
>>>
>>> Have you checked to see if there is a mute or low volume control
>>> setting in one of the mixers on that channel?  On my laptop, I had to
>>> use alsamixer and also a GUI Pulse Audio mixer to make my HDMI audio
>>> work.
>>>
>> Edit:Sorry,typo:
>> When I run alsamixer it looks like the volumes for  4 spdif outputs are  
>> at
>> 00 (not MM)
>> But I can't increase them as I can with the other outputs.
>> Paul
>
> 00 is good.  MM means muted.  There should not be a volume control bar
> above SPDIF outputs on a mixer as they do not have volume controls.
> But of course they are affected by volume controls in the path to
> them.  Especially the pesky Pulse Audio - so now you need to install a
> Pulse Audio mixer and check that.  Recent versions of Mythbuntu do
> install Pulse Audio, although it is not particularly apparent that
> they have done it.  I have heard it is possible to uninstall it, but
> all I found I needed to do was use its mixer to unmute things and set
> the volume settings to maximum.


Oh, I didn't realise I needed a pulse audio mixer as well as alsa.