Messages in this thread | ![/](/images/icornerl.gif) | | Subject | Re: Need help with lockups on tyan s2460 motherboard in SMP mode | From | James Strandboge <> | Date | 23 Apr 2003 17:26:12 -0400 |
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On Tue, 2003-04-22 at 09:38, James Strandboge wrote: > I have a dual AMD 1600+ (MP processors) system with tyan s2460 > motherboard that freezes with no error messages in syslog.
First off, thank you to everyone who responded-- your input helped me figure this out. I wanted to send this to the lists so others might benefit.
As it turns out, the problem appears to have been solely heat related. I ended up installing a vanilla 2.4.20 kernel with smp for 386 (ie no pentium or athlon optimizations), without acpi, but with apm as a module. I disabled power management in the BIOS, and boot with only apm=power-off for kernel command line arguments. Notice I did NOT use noapic. The kernel boots fine and has no APIC errors (though there is that errata #22 message). I then installed lm_sensors 2.7.0 and i2c-2.7.0 so I could read the temperature.
The temperature readings for the 3904 transistor are the ones to use, since they are closest to those in the BIOS. I called tyan and spoke with someone on the phone, and he said that the system will lock up around 60C (not the advertised 80-90C, because the sensor is reading air temperature). With the case all closed up I ran two kernel compiles, and two 'top -d .01' instances all at once. Then I ran 'sensors' every 30 seconds, and sure enough, the computer got near 60C and crashed. I took the sides off the case, and used an oscillating fan to blow air into the computer and rebooted. 'sensors' now shows the temperature between 39-43C and has been running the above stress test for several hours (it has never run it for that long).
So now I will be buying some additional fans and making sure the air flow is good in the case. I also whole heartedly recommend using lm_sensors. It REALLY helped with debugging this issue.
Jamie
-- James Strandboge Targeted Performance Partners, LLC Web: http://www.tpptraining.com E-mail: jamie@tpptraining.com Tel: (585) 271-8370 Fax: (585) 271-8373
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