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Old October 12th, 2007, 06:59 PM
StormRage StormRage is offline
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Posts: 12
Red face Surround Sound

I have an Asus P5B-MX/WiFi-AP mobo running Fedora 7 (2.6.22.7-85.fc7) with the Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 01)

I have installed

1.) alsa-kmdl
2.) alsa-lib
3.) alsa-driver
4.) alsa-utils
5.) alsa-tools

speaker-test -c6 -tw only plays through the left and right channels.
speaker-test -Dplug:surround51 -c6 -s1 -f75 replies with -

ALSA lib pcm.c:2144snd_pcm_open_noupdate) Unknown PCM surround51
Playback open error: -2,No such file or directory

I've ran alsaconf and made sure that all the channels are unmuted and at full volume via alsamixer...

I do get stereo sound with the (green) speaker output. Yet, I can not get the (mic) pienk and (blue) line-in channels to output sound.

Therefore no surround sound effect...

Is there a specific build I have to do to have these "input" channels change into "output" channels?...
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  #2  
Old October 14th, 2007, 06:43 PM
kage's Avatar
kage kage is offline
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O/S: Linux
Age: 19
Posts: 1,248
Have you run "alsaconf" as root? In alsamixer, check the volume levels of all channels, and make sure none are muted.
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  #3  
Old October 15th, 2007, 05:20 PM
StormRage StormRage is offline
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Join Date: Oct 2006
Posts: 12
Hi,

Thanks for the reply.

Yea, I have ran ALSACONF as SuperUser and made sure nothing is muted via ALSAMIXER.

I have noticed that I have to pass options to the module which then "created" more channels .i.e surround & centre & LFE & channel

/etc/modprobe.d/sound
options snd-hda-intel model=3stack-6ch-dig

Yet still, I only received stereo output.

No surround sound, even when tesing:
speaker-test -Dplug:surround51 -c6 -tw

(and the channels have been set to 6 in ALSAMIXER)
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