[CentOS] Problems with motherboard support? INTEL DP43BF

robert mena robert.mena at gmail.com
Tue Dec 28 11:39:40 UTC 2010


Hi John,

I'll have a look a that.  This seems odd because, if I understand correctly,
those settings would only affect if/when the system is idle and the lockups
occur during regular/busy hours.

BUT... they should be off anyway.

On Mon, Dec 27, 2010 at 5:34 PM, John Plemons <john at mavin.com> wrote:

> Try turning off the green features completely on the board..  Never
> allow the board to go to sleep, don't even let the board put the monitor
> into power saving mode..
>
> John
>
>
>
>
>
>
> On 12/27/2010 4:19 PM, John R Pierce wrote:
> > On 12/27/10 11:04 AM, robert mena wrote:
> >> Hi,
> >>
> >> I've installed Centos 5.5 (plus updates) in a machine with INTEL
> >> DP43BF motherboard.  In order to make Linux detect the PCIs I've added
> >> the pci=assign-busses in my GRUB conf.
> >>
> >> Everything runs fine but within less than 2 days of uptime the machine
> >> simply freezes (black console no connectivity).  This has happened
> >> more than one time so I'm considering to be a problem. The memtest
> >> passed without a problem and the machine uses a compact flash (sandisk
> >> extreme III 4GB) as a disk.
> >>
> >> I could only find the error messages in my /var/log/messages but those
> >> appear hours before the actual lock.
> >>
> >> kernel: 0000:00:1a.7 EHCI: BIOS handoff failed (BIOS bug ?) 01010001
> >>
> >> kernel: 0000:00:1d.7 EHCI: BIOS handoff failed (BIOS bug ?) 01010001
> >>
> >>
> >> kernel: eth4: PCI Bus error a290.
> >>
> >> kernel: eth4: PCI Bus error 0290.
> >>
> >> kernel: eth3: PCI Bus error 2290.
> >>
> >> kernel: eth3: PCI Bus error 0290.
> >>
> >>
> >> Any tips?
> >>
> >
> > thats a desktop board, right?  so it probably doesn't have ECC or any of
> > the other system integrity features of a server board, nor do they
> > usually have the IO bus bandwidth to handle substantial IO workloads.
> >
> > PCI bus errors are not a good thing at all, either.  you have 5 ethernet
> > adapters in use?   what sort of Ethernet controller?   I believe those
> > PCI Bus errors are being reported by your ethernet adapters, and could
> > be the result of excess bus contention.  a single gigE can way more than
> > saturate a 32bit 33Mhz PCI (parallel) bus.  All the PCI slots on a
> > desktop board like you have are on the same bus and contend for the same
> > bandwidth.
> >
> > Also, as mentioned thermal problems are a definite possibility, although
> > Intel CPUs tend to self-throttle if they get too hot, the Chipset might
> > not be that good at it (eg, watch the chipset and memory temperature as
> > well as the CPU).    Another possible cause would be silent memory
> > corruption although that would be more likely to cause a kernel fault
> > ("Fatal kernel error - system halted") however if your display is in a
> > GUI mode, you won't see this unless the console is directed to a serial
> > port which is being monitored.
> >
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> >
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