Power PC hardware is very different from Intel, and I've never even seen a Power PC running Linux, ...

Still, here is what I would ask an x86 or x86_64 user to try: can you download and run the following script:
http://bulletproof.servebeer.com/als...s/alsa-info.sh

To run it, just open a konsole, navigate to the directory where it is located, and type "bash alsa-info.sh"

This is a script that user wishie from IRC channel #alsa wrote, to gather ALSA information from the machine its run on. When run, it will automatically post the output on pastebin.ca and give you the URL where its posted.

Here is an example of the sort of thing to expect.. http://pastebin.ca/724516

Please post the URL here.

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Also, what are you doing to test the sound? Can you type the following in a konsole (and then after about 10 seconds "kill it" with <CTRL<C>) as both a regular user, and also as a root user?
speaker-test -c2 ddefault -twav
That line is supposed to test your sound as both a regular user, and as a root user. My guess is you will get no sound.

Also, I typically ask x86/x86_64 users to please make certain they have alsa-utils and alsa-firmware installed in addition to alsa.

Yes, ... just go to a 10.2 repository with the original delivery.

For example:
http://download.opensuse.org/distribution/...o/oss/suse/ppc/