Re: hdX lost interrupt problem

Date: Wed Jul 09 2003 - 00:04:01 EST wrote:

> I seem to recall one incident while I was unrolling a tarball off a
> CD onto a hard drive, that happened to involve a VIA chipset.

I don't have a record of it, but as I remember, when that happened I had
APIC enabled in the BIOS. After that, I switched to PIC.

In this machine's BIOS Setup BIOS FEATURES SETUP screen, there's the line:

   Interrupt Mode : PIC

The other option is APIC. Make sure it says PIC.

I think it was Alan Cox who pointed out that on single-processor systems
you need to have PIC, and not APIC enabled. And my kernel wasn't even
built with APIC support ("# CONFIG_X86_UP_APIC is not set").

APIC is a newer interrupt controller type, PIC is the orginal 8259A
type. These chipsets can emulate either type in hardware.

I don't know if that's your problem, but you might check.

-- Jim Howard <jiho@c-zone>

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

This archive was generated by hypermail 2b29 : Tue Jul 15 2003 - 22:00:30 EST