[Bug 237340] Unable to make HDMI sound works with HD630

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=237340

Alexey Dokuchaev <danfe at FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|New                         |Open
                 CC|                            |danfe at FreeBSD.org
                URL|                            |https://forums.freebsd.org/
                   |                            |threads/no-sound-via-hdmi.7
                   |                            |0391/

--- Comment #13 from Alexey Dokuchaev <danfe at FreeBSD.org> ---
I'm having the same problem on Lenovo L470 laptop with Intel HD Graphics 620
(Kaby Lake GT2).  When plugging HDMI cable, only image appears on the TV, but
no sound, although HDMI sound output device is apparently detected correctly:

% cat /dev/sndstat 
Installed devices:
pcm0: <Realtek ALC298 (Analog 2.0+HP/2.0)> (play/rec)
pcm1: <Intel Kaby Lake (HDMI/DP 8ch)> (play) default

% mixer
Mixer vol      is currently set to  85:85
Mixer pcm      is currently set to  85:85

However, neither setting hw.snd.default_unit=1 nor passing -ao oss:/dev/dsp1 to
mplayer (or corresponding settings for other players) did not help.

Needless to say, sound is correctly routed to the TV under Fedora Linux, on
this very laptop.

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