Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 13 Mar 2001 00:26:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 13 Mar 2001 00:25:51 -0500 Received: from toscano.org ([64.50.191.142]:18130 "HELO bubba.toscano.org") by vger.kernel.org with SMTP id ; Tue, 13 Mar 2001 00:25:39 -0500 Date: Tue, 13 Mar 2001 00:25:13 -0500 From: Pete Toscano To: David DeGeorge Cc: linux-kernel@vger.kernel.org Subject: Re: APIC usb MPS 1.4 and the 2.4.2 kernel Message-ID: <20010313002513.A1664@bubba.toscano.org> Mail-Followup-To: Pete Toscano , David DeGeorge , linux-kernel@vger.kernel.org In-Reply-To: <200103130245.f2D2j2J01057@janus.local.degeorge.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-md5; protocol="application/pgp-signature"; boundary="/9DWx/yDrRhgMJTb" Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <200103130245.f2D2j2J01057@janus.local.degeorge.org>; from dld@degeorge.org on Mon, Mar 12, 2001 at 09:45:02PM -0500 X-Unexpected: The Spanish Inquisition X-Uptime: 12:17am up 10 min, 3 users, load average: 0.34, 0.40, 0.23 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --/9DWx/yDrRhgMJTb Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Well, I can't speak for the consequences of noapic (I've wondered as much myself), but I know that there's been a problem with SMP 2.4 kernels (even the 2.4 test kernels) and USB running on VIA chipsets for a while now. I'm told by the linux-usb maintainers that it's a problem with the PCI IRQ routing for the VIA chipsets, but I've been unable to get anyone who knows about this to do anything (and I've been asking for a while). Alas, since this stuff is beyond me, I just accept the fact that it'll probably always be broke. pete On Mon, 12 Mar 2001, David DeGeorge wrote: > I am running 2.4.2 as obtained from redhat, but I have experienced the sa= me=20 > problems with a kernel compiled from the 2.4.2 sources at kernel.org. > I am experiencing troubles with enabling MPS 1.4 and USB. I have an ABIT = VP6=20 > motherboard with two stock 733MHz PIIIs. > If I set MPS1.1 in the bios then my IOmega Photoshow usb zip drive works,= the=20 > usb interrupt appears on irq 9 and after a day or two I experience a har= d=20 > (sysreq doesn't work) lock. It seems usb related since doing usb things i= .e.=20 > mounting the drive sometimes cause the lock. > If I set MPS1.4 in the bios then the usb interrupt appears on irq 19, wh= ose=20 > count is alway zero, and the zip drive doesn't get registered. If give th= e=20 > noapic command line then things appear to work, irq=3D9,don't know about = the=20 > hard locks, but booting seems much slower. Of course I can provide much m= ore=20 > information but I wonder is this a common problem and what are the=20 > consequences of the noapic command? > David --/9DWx/yDrRhgMJTb Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.4 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE6ra85sMikd2rK89sRAoYCAKCHgm0XWr0N6ziVmBHAKfFBkdfZrQCdGprW BVLehoiBVeL7c/Rpp56Ev3I= =0ohO -----END PGP SIGNATURE----- --/9DWx/yDrRhgMJTb-- - 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/