Re: Problem with SMP and NCCH-DL motherboard

[Pedro Pla <pedropla@holidaymarketing.com>]

Hi Again,

I've done some further tests disabling hyperthreading which then lets me
disable apic on the motherboard and when I disable these I can boot a
kernel compiled with smp, however it boots detecting only 1 cpu rather
than the 2 on the motherboard. If I then reenable APIC in the bios with
hyperthreading still disabled it fails in the same way, so the problem
seems to be with APIC. Any ideas what more I can try?

Thanks in advance!!
Pedro

Pedro Pla wrote:

>Hello,
>
>I'm running a system with an Asus NCCH-DL motherboard with dual Nocona
>Xeon 3.2 GHZ cpu's, when I boot the system with a single cpu kernel with
>acpi not compiled in it works fine, however when I try to boot a kernel
>with smp it gives a timeout detecting the cpus and then the machine
>reboots after I think trying to work out the irq tables, I say I think
>because it happens so fast that I can barely see what is on the screen
>before it reboots.
>
>I've tried recompiling the kernel with many different options both in
>and out and the only one that lets me boot is a single cpu without acpi,
>apic and hpet, I tried googling for similar problems but haven't been
>able to find anything that applies. I've also tried using an EM64T
>kernel in case it had to do with the Nocona being incompatible with smp
>in 32bit mode but that didn't seem to work and gave the same error.
>
>Is it a kernel problem or a hardware issue? I tried swapping cpu's in
>case one was broken but that didn't help, I also tried flashing the bios
>to the latest one from Asus in case there was some issue with that but
>no luck either.
>
>Also in case this is helpful in locating the problem, when I get it to
>boot a single cpu 2.6.12.1 kernel without acpi or apic I get the
>following errors with the PCI:
>
>NET: Registered protocol family 16
>PCI: PCI BIOS revision 2.10 entry at 0xf1d30, last bus=4
>PCI: Using configuration type 1
>SCSI subsystem initialized
>PCI: Probing PCI hardware
>PCI: Probing PCI hardware (bus 00)
>PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.1
>Boot video device is 0000:01:00.0
>PCI: Transparent bridge - 0000:00:1e.0
>PCI: Using IRQ router PIIX/ICH [8086/25a1] at 0000:00:1f.0
>PCI: IRQ 0 for device 0000:00:1f.1 doesn't match PIRQ mask - try
>pci=usepirqmask
>PCI: Found IRQ 11 for device 0000:00:1f.1
>PCI: Cannot allocate resource region 0 of device 0000:01:00.0
>
>Any ideas or advice would be greatly appreciated.
>
>Best regards,
>Pedro
>
>
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