[Bug 98797] [BXT/KBL] - HDMI - HD audio passthrough dont work

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98797

--- Comment #97 from Ariel <ari.reads at gmail.com> ---
I have tested with a native HDMI 2.0 AVR (denon x2300W) and TV and can
confirm that passthru FAILS in Linux, same as 1.4b. No difference.

To further clear doubts, during that test I confirmed that the HDMI
connection was working in 2.0 mode (18Gbps IIRC), playing back 4K 60fps
 content, reported by both the AVR and Kodi.


On Aug 11, 2017 11:49 AM, <bugzilla-daemon at freedesktop.org> wrote:

> *Comment # 96 <https://bugs.freedesktop.org/show_bug.cgi?id=98797#c96> on
> bug 98797 <https://bugs.freedesktop.org/show_bug.cgi?id=98797> from dCrypt
> <dcrypt at telefonica.net> *
>
> (In reply to Jani Nikula from comment #89 <https://bugs.freedesktop.org/show_bug.cgi?id=98797#c89>)> Does passthrough work in Windows in PCON mode (HDMI 2.0), or only in LS mode
> > (HDMI 1.4)? i915 always uses PCON mode.
>
> Could it be just that, that LS mode is supported in Windows and not in Linux? I
> mean, I have HDMI 1.4 decoder and TV and my NUC6CAYH also fails in Linux, while
> it works in Windows. But I can't test in HDMI 2.0 equipment as I don't have
> access to any. I can't speak for the rest posting, but maybe it will be useful
> if someone can confirm that a native HDMI 2.0 AVR was tested in Linux. Not
> likely, but maybe we all share a common DP1.2->LSPCON->HDMI2.0->AVR HDMI 1.4
> setup working in LS mode in Linux, thus failing.
>
> (In reply to Jani Nikula from comment #91 <https://bugs.freedesktop.org/show_bug.cgi?id=98797#c91>)> (In reply to chrisk2305 from comment #90 <https://bugs.freedesktop.org/show_bug.cgi?id=98797#c90>)
> > > just try in Kodi. And yes it works in Windows.
> >
> > Can you differentiate between PCON and LS modes of the LSPCON in Windows,
> > and say with certainty that passthrough works in PCON mode in Windows?
>
> And, more important, also say with tertainty that passthrough also fails in
> PCON mode in Linux (native HDMI 2.0 AVR) ... I haven't seen any confirmation of
> it within the thread.
>
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