Date: Sun, 28 Mar 2004 05:35:00 +0200 From: Marc "UBM" Bocklet <ubm@u-boot-man.de> To: questions@freebsd.org Subject: Re: ahc reports lots of pci parity errors Message-ID: <20040328053500.28a32eee.ubm@u-boot-man.de> In-Reply-To: <20040324194532.7d768c69.ubm@u-boot-man.de> References: <20040324144901.6230d0a7.ubm@u-boot-man.de> <4061A60D.4080807@mac.com> <20040324194532.7d768c69.ubm@u-boot-man.de>
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On Wed, 24 Mar 2004 19:45:32 +0100 Marc "UBM" Bocklet <ubm@u-boot-man.de> wrote: > On Wed, 24 Mar 2004 10:15:25 -0500 > Chuck Swiger <cswiger@mac.com> wrote: > > > Maybe a problem with the ISA-to-PCI bridge on your motherboard, or > > else a timing problem. You aren't playing with the bus frequency > > multipliers, overclocking, or anything like that, right? > > Nope, nothing at all. It's a Tyan Thunder X with two PII-Xeon 450Mhz, > nothing overclocked. > > > Dump the ISA soundcard for a PCI one and you'll probably do > > better... > > Yep, just removed it. > > But as i wrote above I still get sporadic parity errors even without > that old isa-card. > > Any idea what might cause those? Hmm, I narrowed it down. It starts going havoc if there are more than 4 PCI cards inserted. If the fifth card is a PCI card, I get lots of errors and even lockups really soon, if the fifth card is an ISA card, i get less errors and I've only encountered one lockup until now. I've two NICs and two graphic-cards (all PCI), ide-controller onboard and scsi controller onboard. Is this behaviour something that might be expected with this kind of setup or is it a sign of defective/failing hardware (buggy/broken southbridge, as Chuck suggested)? TIA :-) Bye Marc
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