Ongoing U320 AIC7902 Seagate ST318453LW issues, SCB timed out

[Don Bowman]

What causes a "No or incomplete CDB sent to device." ?

<<<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>>
(da0:ahd0:0:0:0): No or incomplete CDB sent to device.
ahd0: Issued Channel A Bus Reset. 36 SCBs aborted
(da0:ahd0:0:0:0): SCB 0x18 - timed out