[mythtv-users] HDMI Audio no front right/left channels

[Jim Abernathy]

On 02/05/2018 11:58 PM, Mitchell Gore wrote:
> Hi,
>
> I upgraded my mythtv system to v 28 (regretfully) and now cant get 5.1 
> audio over HDMI to work correctly.  I am running ubuntu 16.04 on a ECS 
> Liva mini-pc.
>
> Here is the audio setup:
> **** List of PLAYBACK Hardware Devices ****
> card 0: PCH [HDA Intel PCH], device 0: ALC282 Analog [ALC282 Analog]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
>
>

I'm also running Ubuntu 16.04 on all my frontends.  Most are Intel NUC's 
with HDMI monitors.  I've run them on v0.28 and v29.1.  On my Setup 
wizard I have selections for all the usual audio stuff, but since I have 
HDMI, I also have alsa HDMI dev 0 and 1.  I also have to change my 
Ubuntu Sound mixer to the same HDMI if I want Kodi or VLC to work.  I 
find that Mythtv setup Speaker test with 5.1 had issues with v0.28, but 
it's fine in v29.1.

Not sure why you aren't seeing HDMI.  I didn't do anything fancy on my 
Ubuntu install or mythtv install.

Jim A

> When i run test command:
>  speaker-test -c 6 -r 48000 -D hw:0,3
>
> i get white noise on center, rear right, rear left and LFE.  I get 
> nothing on the front left and right speakers.
>
> In Mythtv I am selecting ALSA:hw:CARD=PCH,DEV=3 (tired all options as 
> well) and enabling 5.1 speakers and Dobly Digital.
>
> When i look at my Marantz amp i see dobly digital as sound info as 
> Dobly Digital.
>
> also interestingly when i goto audio settings while watching the 
> command line i see:
> ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin 
> supports only capture stream
> ALSA lib pcm_dsnoop.c:545:(snd_pcm_dsnoop_open) The dsnoop plugin 
> supports only capture stream
> 2018-02-05 22:56:19.786346 E  ALSA: 
> snd_pcm_open("dsnoop:CARD=PCH,DEV=0"): Invalid argument
> 2018-02-05 22:56:19.791330 E  ALSA: 
> snd_pcm_open("dsnoop:CARD=PCH,DEV=3"): Invalid argument
> ALSA lib pulse.c:243:(pulse_connect) PulseAudio: Unable to connect: 
> Connection refused
>
> ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching 
> channel map
> ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching 
> channel map
> ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching 
> channel map
> 2018-02-05 22:56:20.022026 E  ALSA: snd_pcm_open("pulse"): Connection 
> refused
> 2018-02-05 22:56:20.028381 E  ALSA: 
> snd_pcm_open("surround21:CARD=PCH,DEV=0"): Invalid argument
> 2018-02-05 22:56:20.063161 E  ALSA: 
> snd_pcm_open("surround41:CARD=PCH,DEV=0"): Invalid argument
> 2018-02-05 22:56:20.067783 E  ALSA: 
> snd_pcm_open("surround50:CARD=PCH,DEV=0"): Invalid argument
> 2018-02-05 22:56:20.206484 E  PulseAudio: ContextConnect, context 
> connect failed: Connection refused
>
>
> I am at a complete loss on this one.  Been using mythtv since .20 and 
> never had anything like this.  Normally sound either works or it doesnt.
>
> Any suggestions?
>
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://lists.mythtv.org/mailman/listinfo/mythtv-users
> http://wiki.mythtv.org/Mailing_List_etiquette
> MythTV Forums: https://forum.mythtv.org

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mythtv.org/pipermail/mythtv-users/attachments/20180206/e065ce81/attachment.html>