Re: what is shutting off my computer?

On Sat, 29 Dec 2007 17:04:33 +0000, Bob Tennent rearranged some electrons
to say:

On 29 Dec 2007 13:04:41 GMT, david wrote:
> On Sat, 29 Dec 2007 05:29:22 +0000, Bob Tennent rearranged some
> electrons to say:
>
>> On Fri, 28 Dec 2007 17:29:34 -0600, General Schvantzkopf wrote:
>> > On Fri, 28 Dec 2007 22:51:04 +0000, Bob Tennent wrote:
>> >
>> >> When I try to do something computationally intensive (such as
>> >> lame encoding), my system shuts down. I think it's because a bad
>> >> thermistor is producing high readings. Even when the system is
>> >> 100% idle, the CPU temperature is 61°C according to lm_sensors.
>> >> The "high" value is 80°C, and I believe the system shuts down if
>> >> the CPU utilization goes too high, even if the real temperature
>> >> is much lower.
>> >>
>> >> Can this be fixed by editing a configuration file or turning off
>> >> the broken thermistor?
>> >
>> > You might be able to disable shutdown in the BIOS but I wouldn't
>> > do that if I were you. It's entirely possible that the temps are
>> > real.
>>
>> No way. On a "cold" start, the CPU temperature is over 50, even
>> when the motherboard is at 22.
>
> This is entirely possible if your CPU cooling system (heatsink, fan,
> thermal compound) is defective.

By "cold start" I meant that the system is starting after being off for
hours. How could a CPU be at 50°C if the power is off?

How could you read the temperature unless the power was *on*? If the
CPU heatsink is not firmly attached to the die, it will get up to 50C in
just a few seconds after power-on.
.

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