6 Jun
2018
6 Jun
'18
2:18 a.m.
On June 5, 2018 9:20:25 AM HST, Len Ovens <len(a)ovenwerks.net> wrote:
On Tue, 5 Jun 2018, Mac wrote:
My guess is if you pick the surround sound device as JACK's output device, you'll
get the 7.1 outputs. But this is also well beyond my knowledge!
--
David W. Jones
gnome(a)hawaii.rr.com
authenticity, honesty, community
http://dancingtreefrog.com
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The piece I don't see is, assuming there is a
device with 5 outputs,
how do you
get jack to create playback_3, _4 etc.
(I get aplay doesn't show jack, but, for example aplay -L lists
(this is a
shortened list):
front:CARD=PCH,DEV=0
HDA Intel PCH, ALC892 Analog
Front speakers
surround71:CARD=PCH,DEV=0
HDA Intel PCH, ALC892 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer
speakers
hw:CARD=PCH,DEV=0
HDA Intel PCH, ALC892 Analog
Direct hardware device without any conversions
hw:CARD=PCH,DEV=1
HDA Intel PCH, ALC892 Digital
Direct hardware device without any conversions
How does jack decide to only do 2 playback_1,_2?
I take it there is something else in alsa startup that says provide
for example
surround71
I do not know if jack will accept surround71:PCH,0 for device. I do
not
know the mechanism by which it switches either. You are getting beyond
my
knowledge. It would not hurt to try. The other thing to look at may be
hdajackretask. This shows what the audio jacks are currently being
used
for. I do not know if changing "blue Line In" to "Rear Side" will
change
hw:HDA from 2.0 to 4.0 for example. but it may be worth a try. Setting
physical jacks to do surround operation may be all it takes.
In my case the real answer is I don't know. I tend to disable any
internal
audio device to clear up one more thing that may interfere with "real
audio".