On 06/06/18 14:12, Mac wrote:
....
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".
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".
I use qjackctl, so I'm not that familiar with the command line interface.
In the Qjackctl settings panel, under advanced, it shows the 'system'
output device,
and also a field for number of channels. I had an 8-channel DAC
connected a while back
and setting channels=8 and restarting produced 8 system outputs. So it
is possible.
Looking at web pages for jack_control, I'd suggest trying:
jack_control dps device surround71LPCH,0
jack_control dps channels 7
might be the answer?
Bill
--
+----------------------------------------+
| Bill Purvis |
| email: bill(a)billp.org |
+----------------------------------------+