[pulseaudio-discuss] HDMI audio passthrough no longer working

Xamindar junkxamindar at gmail.com
Sun Mar 8 00:54:22 PST 2015

Further testing has shown that this is a pulseaudio problem. When I have 
my audio device set to "Digital Surround 7.1" as it should be, 
passthrough will not work in any app I test (kodi and vlc). My options 
are here in this image: http://i.imgur.com/3zkMsGy.png
I do have the passthrough settings checked as can be seen in this image: 

If I downgrade my settings to the "Digital Stereo" option then 
passthrough will work for some reason.

Is this a limitation/regression in pulseaudio? Or do I simply have some 
configuration set wrong?

On 03/01/2015 11:32 PM, Xamindar wrote:
> Hi Pulseaudio list!
> With a recent update to my Arch system, audio passthrough has stopped 
> working in Kodi. Kodi no longer shows the passthrough options anymore 
> either. Here is what I have which has been working fine up until recently.
> -7.1 audio out HDMI (nvidia card) to an Onkyo receiver.
> -KDE4 running as my DE with pulseaudio configured and working.
> -Pulseaudio set up as the correct 7.1 audio (even get them all in kde) 
> with passthrough items all checked in pavucontrol.
> I was getting passthrough on the files that had supported codecs and 
> kodi was handling everything else. Then when I wasn't in Kodi audio 
> was great in the DE with all other applications. This set up was 
> working great up until recently. It's as if pulseaudio has stopped 
> supporting passthrough or my config got overwritten by a default.
> Anyway, a recent update broke all this and the passthrough options 
> have vanished from the kodi options. The closest I have gotten is 
> setting sound configuration to stereo in pavucontrol and then the 
> passthrough options magically appear in kodi again. But still no sound 
> on passthrough stuff and this option is unacceptable anyway as I don't 
> want to reduce everything else to stereo just to get passthrough 
> working in one app.
> Any ideas what went wrong here? Is there a known bug in pulseaudio 6.0 
> that causes this breakage?
> Thanks.

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