On Tue, 2006-10-10 at 10:17 -0400, Paul Davis wrote: > > But at this point, the interrupt lines from onboard and external PCI > > devices are already merged, so changing the IRQ would just move > > both devices. > > > > When an onboard device and a PCI card conflict, you have to move the > > card to another slot (or, better, to fix the driver(s)). > > just as a followup, ryan on #ardour pointed out the kernel boot argument > "acpi_irq_balance" which results in *much* better distribution of IRQs > among devices on my laptop. i still have the builtin soundcrap, plus the > yenta and HDSP driver on the same IRQ, but i used to have the ethernet > and two other devices there as well. others who tried it reported > improvements as well. > I tried with acpi_irq_balance and acpi_irq_pci=3,4,5,6,9,10,11,12,13,14 but that didn't change a thing. I still have my soundcard on the same IRQ as my eth0, IRQ 11. It is also noteworthy that in the kernel Documentation-directory there is a file "kernel-parameters.txt" which lists all, surprise, kernel parameters that can be passed to the kernel at boot-time. According to that list, it is possible to set IRQ on most, if not all, OSS-drivers. It is also possible to set IO-addr and DMA, but seemingly not in ALSA. Is it just a driver design issue or are the systems in themselves that different? Regards, Mathias
