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Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?
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Or am I at the mercy of the BIOS and/or default kernel behavior? It really pains me that on my SOYO KT600 Dragon Ultra mobo that virtually all my PCI devices are assigned to either IRQ 10 or IRQ 11. This is terrible and I's like to be able to distribute the IRQ's evenly accross my devices. I want my video card on a different IRQ from my audio device for example. How does Linux decide what gets assigned where and can that decision be modified?
LINUX can not give out IRQs very well, so its better to leave it to the BIOS to do the dirty work. Are you sure your BIOS does not have an option to designate IRQs to devices because many motherboards that I used has this function. It may not be as easy as PCI Slot 1 gets IRQ blah and PCI Slot 2 gets IRQ blah blah. It might be four options that you change. These four options daisy chain to certain PCI/AGP slots or devices. You have to do trial and error to get the IRQs that you want for each device. You may have to move a few cards around to make sure they get their own IRQ. Check the motheroboard manual it will give you details about designating IRQ to devices.