> Please see the recent post from Bernie Innocenti "sata_mv 0000:03:06.0: PCI > ERROR; PCI IRQ cause=0x30000040". I suspect you could have a similar problem > with the system running at too high a PCI-X bus clock speed with two cards > installed. Speed can be jumpered from 133Mhz down to 100Mhz but that doesn't make any difference at all. Since the board has only two slots (and I need both) I can't use the insert-slower-card trick to slow the bus down to 66Mhz. Fun detail: pcix1 -- controller1 -- backplane1 -- array1 pcix2 -- controller2 -- backplane2 -- array2 works as long as it's not stressed. As soon as we switched the cabling like so (to see if the initial failing port would "move" with it or not): pcix1 -- controller1 -- backplane2 -- array2 pcix2 -- controller2 -- backplane1 -- array1 the box goes absolutely crazy within seconds of normal access. With "luck" even while sitting there idle. The only difference is that array1 has 4 disks and array2 has only 3. Thank you for trying to help Christian -- 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