Hardy doesn't find SATA drive on VT8251

[Ari Rahikkala]

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...

[Ari Rahikkala (ari-rahikkala)]

Ahhh, this seems to be duplicate of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/190492 ... setting pci=nomsi fixed this. Sorry for the spam.

[Sergio Barjola (sbarjola)]

Thank you for taking the time to report this bug. I marked this as duplicate of bug 190492 so you have stated.