I tried to set up Ubuntu Karmic Beta, but faced a similar problem with
my Asus P5W DH Deluxe motherboard. AHCI is turned on in BIOS. I tried to
load libata module with both ACPI on and off, as it is indicated in many
forums, that the "status: { DRDY }" errors may be due to faulty ACPI-
implementation in libata, but it didn't help. The console was still
being spammed with these messages.
The motherboard has 4 (sort of) SATA ports on the South Bridge, one of
which is hard-wired to a Silicon Image 4723 (EZ-RAID) fakeraid
controller with 2 ports plus 2 SATA (1 eSATA + 1 normal SATA) ports on
the JMicron JMB362/JMB363. I have 4x320GB HDDs on a RAID-5 mdadm-array +
1x1TB HDD for backup and long-term storage.
No matter what HDD I plug into the right port of EZ-RAID controller
(turned "off" using jumpers, so that it acts as a pass-
through/splitter), I start getting messages like this
[ xx.xxxxxx] ata2.00: exception Emask <...> frozen
<...>
[ xx.xxxxxx] ata2.00: status: { DRDY }
[ xx.xxxxxx] ata2: hard resetting link
[ xx.xxxxxx] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[ xx.xxxxxx] ata2.00: configured for UDMA/133
[ xx.xxxxxx] ata2: EH complete
every few minutes.
The problem is solved if I don't use the port provided by Sil 4723, then
it just displays
[ 1.804020] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[ 1.804071] ata2.00: unsupported device, disabling
[ 1.804074] ata2.00: disabled
in the beginning, but that way I get to use only 4 SATA ports (3 from
ICH7R + 1 from JMicron) instead of 5.
I tried both server and desktop install CDs, but the problem persists
until I stop using the EZ-RAID port.
--
ata timeout exception with ahci libata driver (was with 2.6.28-11, but i
confirmed it affewcts previous kernels too)
https://bugs.launchpad.net/bugs/352197
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