6 Jun
2018
6 Jun
'18
5:13 p.m.
On Tue, Jun 5, 2018 at 3:20 PM, Len Ovens <len(a)ovenwerks.net> wrote:
On Tue, 5 Jun 2018, Mac wrote:
The piece I don't see is, assuming there is a device with 5 outputs, how
Apparently not. I tried "jack_control dps device surround71:PCH,0" and
still got playback_1,_2. (There are also surround21, 41, etc. none of those
changed anything either.)
As for hdajackretask, when I tried to "Apply now" I got a device busy
message. I didn't try "Install boot override".
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".
Agreed, when in my studio or at a venue where I have "real audio". But,
sitting in my hotel room or elsewhere, with only my laptop and it's
internal hardware...one must improvise. ;)
(Not saying I would need more than 2 outputs in such a case, that's just a
"hey, the thing has more than two channels, how do get to them" musing.)