On Thu, 08 Apr 2004, martin f krafft wrote:
> also sprach Henrique de Moraes Holschuh <[EMAIL PROTECTED]> [2004.04.08.0108 +0200]:
> > No. It is a machine totally dead, CPU won't even NMI, soundboard
> > will keep looping whatever is in its buffer kind of bug. Probably
> > a northbridge issue.
>
> What's NMI?
Non-maskable interrupt. It is the highest priority one available, and it
cannot be "turned off".
> > Try to make sure you don't have external PCI cards sharing IRQs
> > with the internal devices, and see if that improve things.
>
> If only I'd know how to assign IRQs. Ever since they don't give us
Look in the board's manual. It will tell you what PCI slots and devices
share the wiring for a PCI interrupt line. Most cards will use only the
first interrupt line ("A").
If the board isn't crap, the onboard PCI bus should work fine as wired by
the manufacturer... but PCI cards might just not be that nice (which does
indicate a deviation of the standard by one (or both) parties)).
You'll have to move cards around or remove them. We are talking physical
wiring here; what you can do on the software side is to program the APICs
to deliver these wires to differently numbered IRQs (which usually will make
a difference only if there are kernel bugs, or on a SMP machine where
different IRQs are wired to different processors).
> jumpers for that anymore, I have been a software junky and my
> knowledge about hardware has decreased logarithmically.
I have no idea of the kernel can reassign IRQs or remap the IOAPICs
from user space. It just might. There used to be a way to do that,
with the hwtools package, but it may not work anymore.
> > Enable the LAPIC NMI watchdog, and see if that causes better (or
> > worse behaviour). Try it with the IOAPIC NMI watchdog as well.
>
> Do I have to patch that into 2.6.5?
No. nmi_watchdog=1 means IOAPIC, nmi_watchdog=2 means LAPIC. You need to
have the NMI Watchdog compiled into the kernel.
--
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh
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