5.1 soundcard with 2.1 speakers

[fcuk112]

how do i get 2.1 output from a 5.1 soundcard?

i tried the following in ~/.asoundrc:

pcm.51to20
{
type route
slave.pcm surround51
slave.channels 6

# Front and rear, at 33% of original signal strength
ttable.0.0 0.33
ttable.1.1 0.33
ttable.2.0 0.33
ttable.3.1 0.33

# Center channel routing (routed to front-left and front-right),
# 6dB gaindrop (gain half of main channels) per channel
ttable.4.0 0.16
ttable.4.1 0.16

# LFE channel routing (routed to front-left and front-right),
# 6dB gaindrop (gain half of main channels) per channel
ttable.5.0 0.16
ttable.5.1 0.16
}

but it doesn't seem to work. when i do speaker-test -c2 i only get noise from my left channel.

any advice?

[fcuk112]

bump.

[fcuk112]

well i finally solved the issue, you don't need .asoundrc file at all - just gotta plug the audio in the right connection! ^_^