Date: Fri, 7 Nov 2003 16:08:33 -0500 From: "Brad L. Chisholm" <blc@bsdwins.com> To: freebsd-amd64@freebsd.org Subject: Regular reboots with > 2G memory Message-ID: <20031107210833.GA13680@bsdone.bsdwins.com>
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I've been working on setting up an Opteron system based upon the Tyan Thunder K8S (2880) motherboard. I saw the reference David O'Brien made earlier regarding possible issues with this motherboard, and I am wondering if I am being bitten by one of them. Here's my scenario: Tyan Thunder K8S (2880) motherboard 2 Opteron 244 processors 6 X 1G registered ECC DDR 2100 ram 5.1-CURRENT from Oct. 24 Generic kernel With all 6 sticks of memory (6G), the machine spontaneously reboots after exactly 90 minutes of uptime. You can set your watch by it. There is no panic issued, and it doesn't drop to ddb... it just reboots as if the reset switch had been toggled. It's only uptime that matters... I can break to ddb, and let it sit there for hours, but when I continue, it will reboot when the uptime hits 90 minutes. With 4 sticks of memory (4G), it reboots after 45 minutes. The symptoms are the same as with 6G, except for the time. The 4 sticks can reside in any valid memory slot combination, it makes no difference. With only 2 sticks of memory (2G), it is stable, and does not spontaneously reboot. I've currently got ACPI disabled in the bios, since I get lots of ACPI exceptions with it enabled, but the behaviour is the same regardless of whether or not ACPI is turned on. We've got another similar machine running -CURRENT from Sep. 8 that does not exhibit these problems. There are a couple of dmesg listings available at: http://www.bsdwins.com/~blc/amd64/dmesg.noacpi.verbose http://www.bsdwins.com/~blc/amd64/dmesg.acpi Any ideas? Thanks, Brad
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