just tried audio out via hdmi. I can see the level in PulseAudio Volume Meter. But i cant hear anything. on the tv set.
my first research showed this:
ugoos@ugoos2:~$ dmesg | grep audio
[ 1.506931] usbcore: registered new interface driver snd-usb-audio
[ 2.751278] of_get_named_gpiod_flags: can't parse 'simple-audio-card,hp-det-gpio' property of node '/soundcard-spdif[0]'
[ 2.751285] of_get_named_gpiod_flags: can't parse 'simple-audio-card,mic-det-gpio' property of node '/soundcard-spdif[0]'
[ 11.090107] of_get_named_gpiod_flags: can't parse 'simple-audio-card,hp-det-gpio' property of node '/soundcard-hdmi[0]'
[ 11.090124] of_get_named_gpiod_flags: can't parse 'simple-audio-card,mic-det-gpio' property of node '/soundcard-hdmi[0]'
is this a problem?