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praka123

Member

From: Kerala,India

Registered: 2008-03-04

Posts: 188

Website

2.1 speaker surround on pulseaudio. help

I have a logitech LS21 2.1 speaker system and want to enable surround sound in pulseaudio.
I have onboard intel HD audio 7.1 surround based on ALC892 chipset . and below lines in /etc/asound.conf

pcm.hda-intel {
  type hw
  card 0
}
       
ctl.hda-intel {
  type hw
  card 0
}

pcm.pulse {
    type pulse
}

ctl.pulse {
    type pulse
}

I have sound working but no clue on enabling 2.1 support. please guide Me.

I understand that /etc/pulse/daemon.conf needs to be edited.
this is how it looks now:

default-sample-channels = 2
default-channel-map = front-left,front-right 

I don't think LFE  is the 3rd option to add? Can I add like this noting Subwoofer?

default-sample-channels = 8
default-channel-map = front-left,front-right,subwoofer

Below is how rear I/O port looks:

TIA+

Last edited by praka123 (2012-06-22 19:48:00)

praka123

Member

From: Kerala,India

Registered: 2008-03-04

Posts: 188

Website

Re: 2.1 speaker surround on pulseaudio. help

is it possible to downmix 8-channel o/p to 2.1 surround system?

lssjbrolli

Member

Registered: 2007-12-16

Posts: 26

Re: 2.1 speaker surround on pulseaudio. help

maybe you could use "speaker-test -c 8" to see which channels have sound on your setup, i get sound on:

 0 - Front Left
 4 - Center
 1 - Front Right

praka123

Member

From: Kerala,India

Registered: 2008-03-04

Posts: 188

Website

Re: 2.1 speaker surround on pulseaudio. help

maybe you could use "speaker-test -c 8" to see which channels have sound on your setup, i get sound on:

 0 - Front Left
 4 - Center
 1 - Front Right

I tried. I get proper sound on below options only. there is sound in low volume with other options(side rear etc).

0 - Front Left
4 - Center
1 - Front Right 

So, What should I enter in /pulse/daemon.conf?

Thanks