Re: [linux-audio-dev] Re: [announce] [patch] Voluntary Kernel Preemption Patch

It is a PCI bus issue. You simply don't have enough PCI bus cycles available to do what you want to do. The resource you're running out of is bus bandwidth, and there's nothing to be done about it, other than remove the PCI gfx card from the system. If you get another dualhead AGP graphics card (anything will do), the problem should go away. We have a developer who does lowlatency multichannel sound stuff on a machine with a Matrox G450 dualhead card no problem. I expect my own system (Radeon 9800 Pro and M-Audio 1010LT audio) would be fine dualhead too, although I only run it singlehead at the moment. The 1010LT is 10 channels in and out of 24-bit 96kHz audio and works great down to 1.5ms buffers, so it is no small bus load itself.