Hi everybody:

I have a small problem that I want to solve.

My soundcard is a MaxiSound Muse, using the cmpci driver to work. It works fine but it has two speaker outputs: rear and front. I don't know if quadrafonic sound is supported, and I think it doesn't mind very much. My problem is that i can ear sound only from the front speakers and i can't see ways to activate the rear ones from mixer.

I have done a lspci -v, the results of cmpci are:

Code:
00:0a.0 Multimedia audio controller: C-Media Electronics Inc CM8738 (rev 10)
        Subsystem: Guillemot Corporation: Unknown device 0020
        Flags: bus master, medium devsel, latency 64, IRQ 10
        I/O ports at de00 [size=256]
        Capabilities: [c0] Power Management version 2
doing a lsmod:

Code:
# lsmod
Module                  Size  Used by    Not tainted
appletalk              23140   1  (autoclean)
ipx                    19524   1  (autoclean)
parport_pc             24840   1  (autoclean)
lp                      7492   0  (autoclean)
parport                22496   1  (autoclean) [parport_pc lp]
autofs4                 8756   1
af_packet              13448   0
ext3                   64132   0  (unused)
jbd                    46292   0  [ext3]
ntfs                   51168   0  (unused)
msdos                   4652   0  (unused)
nls_iso8859-1           2844   0  (unused)
nls_cp437               4348   0  (unused)
agpgart                38296   0  (unused)
cmpci                  33460   1
soundcore               3428   4  [cmpci]
8139too                17096   1
mii                     2240   0  [8139too]
crc32                   2816   0  [8139too]
serial                 51972   0
usb-ohci               18184   0  (unused)
usbcore                57472   0  [usb-ohci]
apm                     9768   2
rtc                     6908   0  (autoclean)
reiserfs              169392   1
The driver is ok but running other distros like suse9.0Live eval or Mandrake there is sound from the rear speakers. Where are the differencies from those to knoppix?

One day investigating I donloaded a program called "cmictl" that is a configuration tool for my sound card, but when I set the 4speakers mode, it doesn't work, the sound is just from the front speakers.

Can someone help me? at least explain me why it works in suse and not in Knoppix.

thanks