Messages in this thread | | | Subject | ACPI and ISA IRQ 9, Linux 2.4 | From | Krzysztof Halasa <> | Date | Thu, 19 Feb 2004 02:19:33 +0100 |
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Hi,
I think this is a known problem, but I don't know how to fix it:
I have a dual Pentium-2 machine (non-SCSI Asus P2B-D), latest BIOS with ACPI etc. It has an ISA card (serial port) using IRQ 9 (I can't change the IRQ). It works fine without ACPI, Linux 2.4 lists IRQ 9 as APIC edge-triggered.
With acpi=force (due to BIOS date) IRQ 9 is used by ACPI. /proc/interrupts lists it as APIC level-triggered, and the ISA card no longer generates interrupts.
IRQ 9 is set to "ISA" in BIOS setup. acpi_irq_isa=9 doesn't help.
Is is possible to fix it? Or is it just impossible to use ISA IRQ 9 with ACPI?
More details available on request, of course. -- Krzysztof Halasa, B*FH - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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