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#1 2020-07-20 17:13:35

linksk
Member
Registered: 2020-07-20
Posts: 2

[SOLVED] ALSA Split headphones and speakers for use with JACK

Hey, I'm trying to output different things to my headphones and speakers, plugged into the front and rear panel respectively, but they appear to be the same device.

aplay -l says this:

~ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC887-VD Analog [ALC887-VD Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 1: ALC887-VD Digital [ALC887-VD Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
...omitted HDMI stuff here...

As you can see there is only the "Analog" output which is both speakers and headphones at once, and "Digital", which I assume is S/PDIF.
I've explored answers here and elsewhere, and only found people doing this with PulseAudio, which has high and inconsistent latency, which for audio stuff is definitely sub-optimal.
It worked on Windows with both ASIO and regular drivers, so the soundcard is definitely capable of this.

Has anyone tried, and hopefully succeeded in doing this? And if so, how?
If not, do you have any pointers as to where to look?

Last edited by linksk (2021-03-20 22:18:17)

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#2 2021-03-20 22:16:54

linksk
Member
Registered: 2020-07-20
Posts: 2

Re: [SOLVED] ALSA Split headphones and speakers for use with JACK

Turns out what I needed was the indep_hp hint from here: https://www.kernel.org/doc/html/v4.18/s … notes.html

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