Notebook fan stuck on?
Robert Watson
rwatson at FreeBSD.org
Mon Jan 24 06:49:32 PST 2005
On Sat, 22 Jan 2005, Alexandre "Sunny" Kovalenko wrote:
> What does
>
> sysctl hw.acpi.thermal
>
> say?
>
> Starting point would be looking at whether
>
> sysctl hw.acpi.thermal.tzN.temperature
>
> changes with time. (for all N your notebook provided).
paprika:~> sysctl sysctl hw.acpi.thermal
hw.acpi.thermal.min_runtime: 0
hw.acpi.thermal.polling_rate: 10
hw.acpi.thermal.tz0.temperature: 49.5C
hw.acpi.thermal.tz0.active: -1
hw.acpi.thermal.tz0.thermal_flags: 0
hw.acpi.thermal.tz0._PSV: -1
hw.acpi.thermal.tz0._HOT: -1
hw.acpi.thermal.tz0._CRT: 98.0C
hw.acpi.thermal.tz0._ACx: -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
(pause 20 seconds)
paprika:~> sysctl hw.acpi.thermal.tz0.temperature
hw.acpi.thermal.tz0.temperature: 48.5C
(pause 10 seconds)
paprika:~> sysctl hw.acpi.thermal.tz0.temperature
hw.acpi.thermal.tz0.temperature: 53.5C
(pause 10 seconds)
paprika:~> sysctl hw.acpi.thermal.tz0.temperature
hw.acpi.thermal.tz0.temperature: 49.5C
Seems like it's jumping around a bit. A lot, even. However, if I run
sysctl -n hw.acpi.thermal.tz0.temperature in a loop separated by sleep 10,
while running a "du /" the results seem fairly predictable:
48.5C
48.5C
48.5C
49.5C
48.5C
49.5C
49.5C
49.5C
50.5C
50.5C
50.5C
51.5C
50.5C
51.5C
50.5C
Other than the critical temperature threshold, is it possible to retrieve
other thresholds from the kernel/ACPI?
Robert N M Watson
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