Hi Ben, Just in case you didn't note it before sending the Mini back to repair... :) Benjamin Herrenschmidt wrote: > echo `cat /proc/device-tree/model` PowerMac10,1 > for i in `find /proc/device-tree -name layout-id -print`; do echo $i && hexdump -n4 $i; done /proc/device-tree/pci@f2000000/mac-io@17/i2s@10000/i2s-a@10000/sound/layout-id 0000000 0000 003a 0000004 Regards, -- Cédric