Subject: Re: stray interrupt 7
To: Todd Whitesel <>
From: Rick Byers <>
List: port-i386
Date: 11/05/1998 16:04:09

Well, I wouldn't necesairly trust the kernel to know FOR SURE your IRQ
settings.  You should verify your hardware settings (BIOS Setup, jumpers,
and any software setup), and make sure what the kernel thinks is correct.
I believe that the stray interrupt warning is saying that it received an
interrupt, but it couldn't figure out what driver to pass it to (or
something there abouts).  I know I had the problem when both my sound-card
and paralell port were on IRQ 7 (because I didn't have any other free
ones).  Also, just because your not playing sound and nothing is hooked up
to your parallel port doesn't mean there won't be any interrupts.  I know
it happened to me under the same circumstances (no sound, nothing hooked
up to the parallel port), and moving my soundcard's IRQ to 5 fixed the


On Thu, 5 Nov 1998, Todd Whitesel wrote:

> > You probably have two devices configured to use IRQ 7.  Sometimes people
> > have their sound card and their parallel port set to IRQ 7.  To avoid
> > confusing NetBSD, you should change the IRQ on one of your devices (set
> > the SoundCard to IRQ 9 or something)
> I also get this message, but my sound card is using irq 5 and 9 according to
> dmesg. There is nothing connected to the parallel port, and I'm definitely
> not using the sound card while I run sysinst.
> I filtered the dmesg output and there are no duplicate irq's listed.
> This is always with a sysinst and tarballs built from -current. Every few
> times I get a good 'make build' of -current, I build a distribution and
> try installing it onto a second HD, to ensure that I could use it as a
> snapshot to restore my -current machine after a disaster.
> If I perform the exact same "installation test" with 1.3.2, I get no such
> messages about "stray interrupt 7".
> The only difference other than 1.3.2 bootfloppy+tarballs versus -current
> bootfloppy+tarballs, is that the installation media for 1.3.2 is ATAPI
> CD-ROM, and the media for -current is ATAPI ZIP 100.
> Todd Whitesel
> toddpw @