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#145 Can not make the rear channels working Edit

open
nobody
None
5
2012-07-08
2004-07-03
daniell
No

I have an SB Live! 5.1 PCI soundcard. It's pci id is
1102:0002
I can access three dsp devices under my /dev. These
are /dev/dsp , dsp0 and dsp1.
I can test the dsp devices with:
cat /usr/bin/mc > /dev/dsp' -> Front Speakerscat /usr/bin/mc > /dev/dsp0' -> Front Speakers(again)
cat /usr/bin/mc > /dev/dsp1' -> I can not hear anything...cat /usr/bin/mc > /dev/dsp2' -> No such device
`cat /usr/bin/mc > /dev/dsp3' -> No such device

I have four speakers. One stereo set plugged in to the
green jack (Front), and one stereo set plugged in to the
black jack (Rear). But I can't hear anything from the
rear speakers, although they are working, cause I can
change the speakers.
I'm using the OSS drivers from linux kernel 2.6.7.

lsmod:
emu10k1 68740 2
ac97_codec 16780 1 emu10k1

emu-dspmgr -r :

Routes:
Pcm L:Front L
Pcm L:Rear L
Pcm R:Front R
Pcm R:Rear R
Pcm1 L:Rear L
Pcm1 R:Rear R
fx8:Front L
fx9:Front R
fx10:Rear L
fx11:Rear R
fx12:Analog Center
fx13:Analog LFE
fx15:Digital L
fx15:Digital R
Analog L:Rear L
Analog L:ADC Rec L
Analog R:Rear R
Analog R:ADC Rec R
CD-Spdif L:Front L
CD-Spdif L:Rear L
CD-Spdif R:Front R
CD-Spdif R:Rear R

In the kmix mixer program I can see two PCM outputs,
PCM and PCM2. The PCM is only adjusting the Front
speaker's volume. The PCM2 doesn't do anything...
Unfortunately I can not compile the emu10k1 driver from
emu10k1.sf.net, because it doesn't compile under kernel
2.6.

I'm ask for help, to make the rear speakers working with
this sb live card.

Thanks!

Daniel

Discussion

  • daniell
    daniell
    2004-07-12

    Logged In: YES
    user_id=781978

    Ok, this is probably the OSS driver's bug, because with the
    alsa driver, I can make the rear channels working.
    I have both input devices working. With emu-dspmgr -i, I can
    see Pcm (/dev/dsp), and Pcm1 (/dev/dsp1). I can send data
    to both of them. But there is no match for an output and my
    rear channels. I've configured my card's routing table with
    the emu-dspmgr, so the /dev/dsp1 (Pcm1) device were
    directed to all (15) outputs. When sending data
    to /dev/dsp1, I couldn't hear anything from my rear speakers.
    Instead I could hear voice coming from my front speakers,
    and that's why I think this a bug in the OSS driver, because
    the device (/dev/dsp1, Pcm1) itself is working, but the driver
    can not handle the rear output. Perhaps this is a rather new
    sb live! 5.1 card :)

     


Anonymous


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