On Saturday 20 October 2007 19:11:56 Sergei Shtylyov wrote: > What I don't like is that both PIIX4 and PCI-648 are sharing IRQ15 > (PIIX4 is in legacy mode, so it uses edge-triggered IRQ15 which is not > shareable). You don't have drives connected to PIIX4, do you? However, it > doesn't look like a glitch on IRQ15, it looks like MRDMODE reg. doesn't > work as documented... Well, don't worry too much about the PIIX device. I have disabled it in the BIOS, and I haven't compiled the driver into the kernel. The IRQ sharing hasn't troubled any linux version yet, nor any OS from the other side. MOst likely you're on the right track with the mrdmode register. cu Martin - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html