In the Gentoo linux ppc install doc, it states ---------- <*> Sound card support <*> PowerMac DMA sound support // and <*> OSS sound modules -------- But, on my ibook2 with bot powermac dma AND oss compiled in statically (or as modules and loaded) all that came out of the system was static. sound will work quite well if _just_ the powermac dma is compiled as a module and modprobe'd.
on my Powerbook/Pismo, either way produces just static, although with another additional condition: i2c-core module should be compiled and modprobed - otherwise dmasound_pmac module doesn't load (unresolved ref links).
fixed in cvs.