From: Krzysztof Halasa <khc@pm.waw.pl>
To: <linux-kernel@vger.kernel.org>
Subject: ACPI and ISA IRQ 9, Linux 2.4
Date: Thu, 19 Feb 2004 02:19:33 +0100 [thread overview]
Message-ID: <m3isi3n9wa.fsf@defiant.pm.waw.pl> (raw)
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
next reply other threads:[~2004-02-19 1:58 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-19 1:19 Krzysztof Halasa [this message]
2004-02-23 16:09 ` ACPI and ISA IRQ 9, Linux 2.4 Bill Davidsen
2004-02-23 16:42 ` Michael Frank
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