sound problems with G3 powerbook

[Stephen Judd <stephen@cyberelves.co.nz>]

Problem: I have no sound at all, at least, no volume, anyway.

I'm using the latest 2.2.15pre19 kernel from Paul McKerras.

I see this message at boot:

    DMA sound driver installed, using 4 buffers of 32k.

cat /dev/sndstat yields:

stephen@peregrine:~$ cat /dev/sndstat
PowerMac (AWACS rev 3) DMA sound driver:
        sound.format = 0x20 (signed 16 bit big)
        sound.speed = 44100Hz (phys. 44100Hz)
        sound.stereo = 0x1 (stereo)
        sq.block_size = 32768 sq.max_count = 4 sq.max_active = 4
        sq.count = 0 sq.rear_size = 2284
        sq.playing = 0 sq.syncing = 0

I've got a /dev/audio, and a /dev/dsp. I tried to cat a .au file to
/dev/audio, but nothing happens.

This:

    stephen@peregrine:~/sndkit/dsp$ cat endoftheworld >/dev/dsp

... pushes the CPU load up enormously, until I kill it with control c.

Looking at the gnome mixer, all the volume levels are cranked up.

I can play sound under MacOS 9.

I'm out of ideas now, so any suggestions would be much appreciated. I'd
settle for a simple system beep at this point :-)

Stephen