[mythtv-users] Digital Pass-through Using HDMI

Jon Heizer jheizer at gmail.com
Tue Aug 20 03:04:29 UTC 2013


On Mon, Aug 19, 2013 at 7:41 PM, Jean-Yves Avenard <jyavenard at gmail.com>wrote:

> On 20 August 2013 10:01, Karl Newman <newmank1 at asme.org> wrote:
>
> >
> > Sure there's a solution. If nothing else you could hack the EDID and tell
> > the kernel to override what's detected from the screen. May not be easy,
> but
> > many things are possible in Linux if you're determined enough.
>
> Or tell the kernel to completely ignore the ELD (which is what is
> checked for audio characteristics, not the EDID).
>
> Add to etc/modprobe.d/whatever.conf the following options:
>
> options snd-hda-codec-hdmi static_hdmi_pcm=1
>
> Having said that... if you hear no audio at all, that won't fix
> anything, this only tells alsa drivers to not restrict the output
> capabilities.
> You need to be able to hear something first, only then can you attempt
> to unlock digital passthrough
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Also sometimes the TVs can only pass certain formats and not others.  On my
tv I had to go into the service menus to enable passing DTS for example.

Jon
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