[ltp] Critical temperature reached (80°)

[Felix E. Klee]

At Sat, 3 Nov 2007 19:21:54 -0400,
Theodore Tso wrote:
> Ubuntu isn't doing any funky with fan management.

Could it be that it adjusts the temperature thresholds for shutting down
the system?

> I would suggest that you check out /proc/acpi/ibm/fan; is it showing
> that the fan is working?

Yes it is, and also during the kernel compiles the fan was audibly
running at full speed and exhausting a lot of hot air.

I just ran a stress test under Windows (though maybe not a good one),
and I also compiled a kernel under Slackware 10.2 (kernel 2.6.14.4): No
problems.

> % cat /proc/acpi/ibm/fan 
> status:         enabled
> speed:          3883
> level:          auto
> commands:       level <level> (<level> is 0-7, auto, disengaged, full-speed)
> commands:       enable, disable
> commands:       watchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))

# cat /proc/acpi/ibm/fan 
status:		enabled
speed:		3501
level:		auto

> % cat /proc/acpi/ibm/thermal 
> temperatures:   49 46 46 44 34 -128 32 -128 44 43 -128 -128 -128 -128 -128 -128

# cat /proc/acpi/ibm/thermal 
temperatures:	47 43 31 47 32 -128 28 -128

The above values were extracted shortly after initiating a kernel
compilation on the Ubuntu system.  Shortly before the system shuts down,
they surely look different.

-- 
Felix E. Klee
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