Stephen Hemminger wrote:
On Mon, 19 Mar 2007 11:01:37 -0400
Jeff Garzik <jgarzik@xxxxxxxxx> wrote:
Stephen Hemminger wrote:
This is a new drive, so I suspect some driver incompatibility between the
driver (AHCI) and the hard drive (WD Raptor 10K 74G).
Driver incompatibilities between the driver (LLDD or libata-core) and a
hard drive are extremely rare.
The most common problem on modern SATA drives is drive firmware bugs, at
the moment.
I moved the drive to another machine with ICH7 and it seems to work fine
there. Strange?
Does dmesg reflect any difference in AHCI version or PHY speed, on
either machine? Did you use the same cables in both tests?
AHCI version ("0001.0100" == AHCI 1.1):
...
ahci 0000:00:1f.2: AHCI 0001.0100 32 slots 4 ports 3 Gbps 0xf impl SATA mode
...
PHY configuration and speed:
...
ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
...
SATA headers (ports) on the motherboard and SATA cables are known to be
weak links in the chain, commonly.
Regards,
Jeff
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