Re: PROBLEM: Full CPU-usage on sis5513-chipset disc input/output-operations

[Mikael Pettersson]

Hendrik Fehr writes:
 > Mikael Pettersson writes:
 > > [...]
 > > These are "received illegal vector" errors. They indicate
 > > a serious problem, either with the local APIC bus itself,
 > > or with how the ACPI/MP tables cause us to program the local
 > > and I/O APICs.
 > > 
 > > Do the errors persist if you disable ACPI?
 > > 
 > I just tried the following two things:
 > Boot option "acpi=off" (made the cusour switching faster on and off). And when
 > it came to ide setup i get lots of "hda lost interrupt". The system is
 > unbootable with that option.
 > 
 > With boot option "noapic" there are no more APIC error messages. Should i add
 > that boot option to my defaults in /etc/lilo.conf?

Try pci=noacpi (or however that option which prevents ACPI PCI
IRQ routing is spelled) first.

noapic is a workaround for breakage in other subsystems.
You'll lose interrupt vectors, but that may be preferable
to instability.
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