On Tue, 2006-09-05 at 14:26 +0200, Olaf Hering wrote: > <4>Machine check in kernel mode. > <4>Caused by (from SRR1=49030): Transfer error ack signal > <4>Oops: Machine check, sig: 7 [#1] [...] > <4> scsi0: PCI error Interrupt at seqaddr = 0x8 Is this actually a PCI bus error? In which case it's probably the ahc_inb(,SBLKCTL) of ahc_linux_get_signalling(). Can you verify this? And what happens when you try to cat /proc/scsi_host/host<n>/signalling for this card? James - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html