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I have a 5.1 speaker system, but on both SUSE 9.3 and Ubuntu 5.04, only the front right and left speakers and the subwoofer are working. I'm not getting any sound out of the two rear speakers or the centre speaker.
I've opened alsamixer and tried unmuting things and raising volumes, to no avail. (Curiously, the only parameters that seem to make any difference at all are PCM, Surround, and Duplicate Front, each of which has the effect of muting everything if I turn them off. So for example, Master doesn't affect anything, which seems strange...)
Does anyone have any suggestions? I'm really confused about this....
It utterly depends on your Sound Card. Mine works on all my systems. Be sure that in alsamixer "wave center" "wave surround" "center" "PCM" and "surround" chanels are enabled but all "LFE" chanels are disabled. LFE is to emulate matrix of 5.1 on 4 speaker systems
open terminal first!
$su
[root passwd]
#alsamixer
Configure bars with arrows, enable or disable service with "m" key.
When done ESC
#alsactl store
If you have 5.1 speaker system, be sure that LFE channels bars
are all way down and [off]. LFE channel is to generate 5.1 emulation
matrix on 4 speaker systems.
What card is that? If onboard AC97 that comes with NVIDIA and VIA chipset then it's 5.1 emulation for Microsoft only with lower channels passing through mike. In linux it won't work. If it's solid stand alone 5.1 card then operation I described above must work.
Also on SuSE there is a different way of doing this stuff:
Menu=>YaST=>Hardware=>Sound=>Volume
Adjust channels accordingly.
Again if you do not see the surround there it means that your 5.1 is emulation for Windows only. Sorry
The soundcard is integrated with my motherboard. I just opened alsamixer and it says that the card is NVidia CK804. I guess that means it's only "emulated" surround sound for Windows?
What does it mean for something to be "solid stand alone 5.1"? Are you talking about a separate sound card i.e. one that's not integrated with my motherboard?
Originally posted by shellshock Are you talking about a separate sound card i.e. one that's not integrated with my motherboard?
Precisely! Hardware, not software. I also have NVIDIA chipset with integrated 5.1 onboard which works only for M$. I bought SB Live 5.1 and it works on all distributions. Even on BSD systems!
G'luck!
I updated my suse to 10 and lost the sound as well.
I followed this:
Quote:
open terminal first!
$su
[root passwd]
#alsamixer
Configure bars with arrows, enable or disable service with "m" key.
When done ESC
#alsactl store
If you have 5.1 speaker system, be sure that LFE channels bars
are all way down and [off]. LFE channel is to generate 5.1 emulation
matrix on 4 speaker systems.
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