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Date: Thu, 23 Oct 2003 12:48:59 +0200
From: Mikael Pettersson <mikpe@csd.uu.se>
To: Samuel Kvasnica <samuel.kvasnica@tuwien.ac.at>
Cc: linux-kernel@vger.kernel.org,
       Vitez Gabor <gabor@swszl.szkp.uni-miskolc.hu>,
       ivtv-devel@lists.sourceforge.net
Subject: Re: nforce2 random lockups - still no solution ?
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	<200310211113.00326.lkml@lpbproductions.com>
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Samuel Kvasnica writes:
 > 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.

Chipset and/or BIOS. AMD processors are known to work in other mobos.

You may try disabling just I/O-APIC or ACPI.