[linux-audio-user] Fullduplex on PPC hardware

Hi all, I need to use the soundcard of a Apple IMac and IBook in Fullduplex audio mode. I installed kernel 2.6.8 and i am using snd-powermac as the audio driver. I have been trying with ohphone to see if fullduplex works. Unfortunately it keeps saying: "Could not open sound device - Check permissions or full duplex capability." (even when running as root). Now, Apple being Apple, and this being post 2000 hardware, I do not think that the hardware is only half duplex (but i have no conformation one way or the other). It makes more sense that it's the driver. So my question is: Does anybody know the status of full-duplex support of PowerPC hardware under linux? Do I need to give some special options when inserting the module or patch the kernel? I read somewhere that you need to enable 2 DMA channels for full-duplex support, does this have anything to do with this problem? Regards, Marijn. -- Director Tecnológico Tecnocimiento.