Hi, I don't know what it is, but I've never goten these cards to work on Debian when built as modules (even when they worked with the same module and setting in a different distro, this is particularly weird because I rebuilt the kernel sever times under each distro with the same results).
So, compiling the driver into the kernel is my recommendation. Here's the /dev/sndstat on a Debian box with working sound (not An OptiPlex) and CS4232 on boardcard: Installed drivers: Type 21: CS4232 Type 22: CS4232 MIDI Type 26: MPU-401 (UART) Card config: CS4232 MIDI at 0x330 irq 9 drq 0 CS4232 at 0x530 irq 7 drq 0,3 Audio devices: 0: Crystal audio controller (CS4236) (DUPLEX) Synth devices: Midi devices: 0: MPU-401 (UART) MIDI Timers: 0: System clock 1: Crystal audio controller (CS4236) Mixers: 0: Crystal audio controller (CS4236) ------------------------ DMA stuff: [EMAIL PROTECTED] jon]$ cat /proc/dma 0: Crystal audio controller 3: Crystal audio controller HTH, Jon