[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: [Lugor-discuss] Need help with lockups on tyan s2460 motherboard in SMP mode

On Tue, 2003-04-22 at 09:40, James D 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

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.


PS-- I also ran memtest86, and the memory was fine (though I know that
this isn't definitive).

Email:        jstrand1@rochester.rr.com
GPG/PGP ID:   26384A3A
Fingerprint:  D9FF DF4A 2D46 A353 A289  E8F5 AA75 DCBE 2638 4A3A

Reply to: