Hi everybody:
I've been trying to do the same thing for a few months (at least 5), and now I've managed to have good results.
I have a Maxi Sound M;use sound card (c-media cm-8738 chip) and the driver is cmpci.o but there was a problem in my knoppix. This sound card suports 4 speakers, 4 channels, but in my knoppix I just could listen the 2 front speakers.
I have made the same question many times in this forum but never have a solution, so i decided to experiment.
I had realised that in other distros like SuSE 9.0 live or Mandrake, it worked good, i could listen the 4 speakers, and manage the volumes in kmixer, so i did this:
1.- I booted my computer with Suse 9.0live (4 channels sound).
2.- Then i searched the driver file --> cmpci.o and copy it to a floppy disk.
3.- Then I restarted the system into knoppix (hdinstall) and copy this cmpci.o into /lib/modules/2.4.22-xfs/kernel/drivers/sound as root, in order to replace the existing one.
4.- Then reboot knoppix. You'll be able to listen all your speakers sound.
I think i can try recompiling the driver, but i don't know exactly haw to do it. If someone can tell me? I think it is a better way than the one i have done.
I hope this helps others like me.
See you![]()

New Barebones Supermicro 5019D Server, 4C/8T Xeon D-2123T, 1U Rackmountable, 10G
$449.99
HP ProLiant MicroServer Gen8 G1610T @2.3 GHz, 16GB, 712317-001 NO HDD/OS
$199.00
$280.00
Supermicro CSE-937 3U Storage Chassis No CPU No HDD No Ram Tested & Reset
$129.99
Supermicro 2U X10DRU-i 2x E5-2680 v3 2.5ghz 32gb Ram 240gb SSD 2x GPU *READ*
$369.99
HPE ProLiant MicroServer Gen10 Opteron X3421 32GB DDR4 Intel X550 10GbE No HDD
$599.00
1U Edge Firewall Server X11SCW-F Xeon E-2174G 0 RAM M.2 NVME 3x PCI-e 2x PSU X
$175.00
SuperMicro 4U CSE 847 36 Bay LFF Barebone 2x 1280W w/ 2x Bays 2.5 Rear w/Trays
$499.99
Nasuni NF-50 Supermicro Server, Atom CPU C2558, @ 2.40GHz, 8GB RAM-No HDD/OS/AC
$250.00
Supermicro 1U Network Server Appliance 16GB RAM 800GB SSD 6 LAN Ports Powers On
$450.00