Subject: Re: Problems with ath(4) and interrupt sharing
To: Brian Buhrow <buhrow@lothlorien.nfbcal.org>
From: Steven M. Bellovin <smb@cs.columbia.edu>
List: port-i386
Date: 12/11/2007 14:43:20
On Mon, 10 Dec 2007 21:54:31 -0800
buhrow@lothlorien.nfbcal.org (Brian Buhrow) wrote:

> 	Hello.  Well, I have a partial resolution to my problem.
> Turns out that I should have read google rather than the source while
> searching for my problem.  The problem is, in fact, the hardware.
> This machine, a Dell D400 laptop, has a known problem where the sound
> card and the wireless network card do not work together when ACPI is
> enabled.  Disabling ACPI does resolve the issue.  However, disabling
> ACPI also turns off power management, the ability to sleep, battery
> monitoring, and a host of other useful goodies.  Wireless networking
> and sound are two "must haves" for me on this laptop, so if I must
> live without ACPI to get them, I will. However, is there a way to get
> the ACPI functionality without using the ACPI interrupt tables?  In
> other words, can I pick and choose which ACPI functionality I want to
> use when building or booting a kernel? -thanks

Some machines have BIOS options to change IRQs for certain devices.
If yours has that option, it might help.


		--Steve Bellovin, http://www.cs.columbia.edu/~smb