Re: lost interrupts with 2.4.21 and i875p chipset -- resolved (maybe)

[Greg Norris]

On Tue, Jun 03, 2003 at 06:43:59PM -0500, Greg Norris wrote:
> > Does this occur if you build the kernel without ACPI and without APIC
> > support ?
>
> I just finished testing rc7, and sure enough the problem disappears
> after disabling APIC.  Thanx!

I built a SMP kernel earlier today (in order to enable hyperthreading),
and discovered that the lost interrupt problem appears to have gone
away.  In addition, dmesg no longer shows any "unexpected IO-APIC"
messages.  The only configuration changes from the previous kernel are:

   CONFIG_SMP=y
   CONFIG_ACPI=y
   CONFIG_ACPI_BUSMGR=y
   CONFIG_ACPI_CPU=y

I guess that the next step is to disable hyperthreading in the BIOS,
and see if the UP kernel still has problems.