Bjorn speaks the truth. >> ACPI: setting ELCR to 0200 (from 0c20) BTW. you can verify the final setting of the ELCR from user space like so: # inb 0x4d0 0x00 # inb 0x4d1 0x0E In this example, it means the ELCR is 0x0E00, so IRQs 11, 10, 9 are level triggered and the rest are edge. cheers, -Len - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html