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Old 01-13-2011, 09:22 PM   #1
TheCrow33
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4.1 Surround Sound


I'm running slack64 13.1, I don't have KDE installed or any of the KDE libraries (so answers concerning KMix aren't going to help), I'm using xfce4 as the desktop environment. Anyway I just bought a new 4.1 surround sound speaker system from Amadeus and wanted to give it a shot. Obviously my first instinct was to plug them in and give it a whack... much to no one's surprise this didn't work.

So I googled my ass off, and it seems for every person that has had a surround sound system, there's a different solution for them. I tried a couple tutorials to end at the same disappointing conclusion: the front two speakers and the subwoofer work. So here's the current situation:

The front two speakers are plugged into the speaker-out port (the green one) and the rear-two speakers are plugged into the line-out port (the light blue one). Since the subwoofer works I'm going to assume it uses the the same line that the front two speakers do. I've turned all the lines all the way up in alsamixer, and made sure it's playing on 4 channel. I reran alsaconf just to make sure and it configured snd-intel8x0 for me with no complaints. I also added a .asoundrc file that looks like this:
Code:
bash-4.1$ cat .asoundrc 
# for 4.1 speakers
pcm.ch41dup {
         type route
         slave.pcm surround41
         slave.channels 5
         ttable.0.0 1
         ttable.1.1 1
         ttable.0.2 1
         ttable.1.3 1
         ttable.0.4 0.5
         ttable.1.4 0.5
}
Then I ran "speaker-test -c 4 -D surround41 -t wav". Again only the front two speakers play any sound. I'm kinda new to configuring sound, as I've never before had a problem. Any suggestions?
 
Old 01-14-2011, 11:28 AM   #2
MTK358
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I thought that the light-blue port is an input, not an output.
 
Old 01-14-2011, 01:06 PM   #3
TheCrow33
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I'm pretty sure it's not, but either way I've tried every other port on the sound card with no new results.
 
Old 01-14-2011, 01:24 PM   #4
MTK358
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From my experience, any sound signal played into the blue port goes out the green port. I never tried it under Linux, though.
 
  


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