Date: Fri, 5 Jan 2007 08:09:09 -0800 From: Jeremy Chadwick <koitsu@FreeBSD.org> To: vincent delft <vincent_delft@yahoo.com> Cc: freebsd-stable@freebsd.org Subject: Re: Shutdown problem "Stray IRQ9" Message-ID: <20070105160909.GA63680@icarus.home.lan> In-Reply-To: <20070105151712.57870.qmail@web30512.mail.mud.yahoo.com> References: <20070105151712.57870.qmail@web30512.mail.mud.yahoo.com>
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On Fri, Jan 05, 2007 at 07:17:12AM -0800, vincent delft wrote: > As new to FreeBSD I'm looking for info to solve my > shutdown problem. > > When I shutdown the system (shutdown -h now), the > messages displayed are: > " > No buffers busy after final sync > Uptime: 1h3m35s > Shutting down ACPI > stray irq9 > " > then hang ;-(. I've seen this problem on different machines with different hardware. I don't think it's a hardware problem, though -- I think it's more along the lines of either an interrupt routing problem, or possibly an SMP issue. This is all pure hearsay on my part, but it's the only thing that stands out. I'll add that I have an Asus A8N-E (nForce chipset, AMD CPU) board that exhibits the above behaviour, but _does not_ print the stray irq9 bit. "halt" and "shutdown -h" simply hang after shutting down ACPI; there is no "Press enter to reboot" message, and the keyboard handler appears locked up too. If a developer wants one of these motherboards (no CPU or RAM or other stuff though :) ), I can ship one out for free. I have a working spare. > I've google a bit on "stray irq9" and found several > mails where people says that this is a known problem, > or saying that we should don't care about this, ... I've seen this message mainly on Intel chipset boards. I believe IRQ 9 is commonly assigned by the BIOS to ACPI functionality. I believe what's happening (again, hearsay) is that FreeBSD shuts down ACPI capability, and the interrupt handler reports that nothing is tied to IRQ 9 any more. In comparison, you can search for "stray irq7" and see that others have seen this message on certain boards where the LPT/printer port has been disabled in the BIOS, but lpt support is enabled in FreeBSD. (What I'm trying to say is that the "stray irq" stuff stems from what I described in the above paragraph. > PS: > On the same machine, my gentoo can shutdown correctly. > Thus I would conclude that this is not HW related. I agree. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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