CPU Overheating?

[Zsolt Udvari]

I've similar problem. I've AMD Athlon X2 Dual-Core QL-65.

I'm using sysutils/gather to log my system in every minute. In the
latest entries I can't find anything strange. On my laptop the CPU's
temperature is 70-80C and this is normal as I see on web. While
compiling it increases to 82-85C and nothing any problem.

As I inspected it's independent to any cpu usage. In most case it
shuts off when the LID is closed (not all case!). The fan is working
but no reactions. I can't ping and can't ssh from another machine.
Should power off and power on again.

Zsolt




2014-03-31 2:11 GMT+02:00 Walter Hurry <walterhurry at gmail.com>:
> I have a bog-standard Acer laptop with FreeBSD 9.2 (amd64).
>
> CPU is  AMD Athlon(tm) 64 X2 Dual-Core Processor TK-42 (1596.09-MHz K8-class CPU) per dmsg.
>
> From time to time, it shuts off without warning, as if the power cable has been pulled out. Nothing in any of the logs, and when I power up again it starts normally after replaying the journal.
>
> The shut-off is invariably when it is doing a compile of a big port. I therefore suspect that the CPU is overheating and that the BIOS is causing the shutdown.
>
> To investigate the problem, I have done a 'kldload coretemp' and am periodically running:
>  'sysctl hw.acpi.thermal.tz0.temperature'. So far (only 6 runs) this is reporting temperatures between 76C and 84C.
>
> Question 1: Is this the canonical way to monitor CPU temperature?
> Question 2: Is this too hot?
> Question 3: I plan to load the module in /boot/loader.conf and set up a cron job to run every minute and log the result to a file. Is this sensible, or overkill?
>
> Thanks.
>
>
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