Public bug reported:
This system was recently upgraded to Ubuntu 8.04 (kernel
2.6.24-16-generic). It has three hard drives, two of which are PATA, one
SATA. The PATA drives are detected neatly on ata1 and ata2, but the
kernel spends a lot of time trying to probe ata3 and ata4 for a drive -
and finds nothing. (also, it takes 30 seconds per probe, and tries
probing both devices thrice, so these probes add three minutes to the
bootup time. I tried passing ata_probe_timeout=5, but it had no
effect.).
The dmesg output (attached) seems to indicate that something is wrong
with APIC. I've tried booting with irqpoll, pci=noacpi, and
noapic+nolapic. None of these options have changed anything as far as I
can tell.
lspci identifies the controller as:
00:0f.0 IDE interface: VIA Technologies, Inc. VT8251 AHCI/SATA 4-Port Controller
00:0f.1 IDE interface: VIA Technologies, Inc.
VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 07)
I plan to "fix" this system for now by downgrading to a kernel that
doesn't use libata by default for this chipset, because I suspect this
breakage is libata's fault.
This isn't my computer, so I mightn't be able to respond to queries
about this bug quickly...
** Affects: ubuntu
Importance: Undecided
Status: New
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Hardy doesn't find SATA drive on VT8251
https://bugs.launchpad.net/bugs/223010
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