From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263568AbTJWMlF (ORCPT ); Thu, 23 Oct 2003 08:41:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263571AbTJWMlF (ORCPT ); Thu, 23 Oct 2003 08:41:05 -0400 Received: from anchor-post-35.mail.demon.net ([194.217.242.85]:14867 "EHLO anchor-post-35.mail.demon.net") by vger.kernel.org with ESMTP id S263568AbTJWMlB (ORCPT ); Thu, 23 Oct 2003 08:41:01 -0400 Message-ID: <3F97CEE3.2050700@superbug.demon.co.uk> Date: Thu, 23 Oct 2003 13:51:47 +0100 From: James Courtier-Dutton User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.5) Gecko/20031019 Thunderbird/0.3 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Samuel Kvasnica CC: linux-kernel@vger.kernel.org, Vitez Gabor , ivtv-devel@lists.sourceforge.net Subject: Re: nforce2 random lockups - still no solution ? References: <3F95748E.8020202@tuwien.ac.at> <200310211113.00326.lkml@lpbproductions.com> <20031022085449.GA21393@swszl.szkp.uni-miskolc.hu> <3F96847C.4000506@tuwien.ac.at> <20031022133327.GA25283@swszl.szkp.uni-miskolc.hu> <3F97AACB.2020609@tuwien.ac.at> In-Reply-To: <3F97AACB.2020609@tuwien.ac.at> X-Enigmail-Version: 0.81.6.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Samuel Kvasnica wrote: > Dear Gabor, > > thantks a lot, indeed you are right ! I've been confused by some nforce > FAQs where 'nolapic' option was recommended. In fact I did never check > whether this option > really exists. Now, after recompiling the kernel the framegrabber works > with uncompressed stream for almost 24h and it is rock-solid. > > So, a workaround recommendation for all using ivtv driver on nforce2 > chipsets and kernels up to 2.4.22: > > *** RECOMPILE YOUR KERNEL WITH LOCAL APIC DISABLED ***, > > otherwise you'll experience very rare random lockups while watching the > compressed stream and lockups within 10 minutes when watching the > uncompressed > yuv stream. > > What I'd like to know is whether this bug is AMD processor or chipset > related. Is there a patch available ? I tried 2.6.0-test8 and it wasn't > stable. I'd prefer to use APIC instead of XT-PIC because some drivers > e.g. kernel DRM don't support shared interrupts and I can't get own > interrupt for the video card. > > Sam > > > Vitez Gabor wrote: > >> Hi, >> >> On Wed, Oct 22, 2003 at 03:22:04PM +0200, Samuel Kvasnica wrote: >> >> >>> I'm booting the kernel with acpi=off, noapic and nolapic options and >> >> >> nolapic? That's not a valid kernel command line parameter I'm afraid. >> fgrep -ri nolapic $KERNEL_SOURCE_DIR >> >> gives nothing. ??? >> >> >> Gabor >> Extract fron linux-2.6test8 Documentation/kernel-parameters.txt nolapic [IA-32,APIC] Do not enable or use the local APIC. So, It is supported in the kernel 2.6.x Cheers James