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On 9/30/06, reader@×××××××.com <reader@×××××××.com> wrote: |
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> Message from syslogd@reader at Sat Sep 30 04:41:32 2006 ... |
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> reader kernel: CPU0: Temperature above threshold |
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> |
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> Message from syslogd@reader at Sat Sep 30 04:41:32 2006 ... |
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> reader kernel: CPU0: Running in modulated clock mode |
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> |
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> [...] |
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> |
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> Some kind of attempt by kernel to cool things down. But will it |
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> actually shutdown if it gets dangerously hot? |
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|
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Nope, not the kernel. Modern CPUs have built-in thermal |
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throttling...if they get too hot, they reduce their clocks until |
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things cool down. They generate an exception when this occurs, which |
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the kernel sees and logs if you have the right ACPI options enabled. |
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|
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They will also simply shutdown if the temperature gets too warm. |
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However, this would generally be bad, as no clean shutdown or even |
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disk sync would occur. |
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|
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> Further, how can I discover what temperatures were involved when this |
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> happened? |
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|
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Download the processor specs from the manufacturer's web site....that |
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should list the throttle and shutdown temperatures. |
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|
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> Or can I set something to make a shutdown happen at a specific |
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> temperature? |
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|
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Install and run acpid, and you should get ACPI temperature events |
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passed through to /etc/acpi/default.sh, which you can edit to handle |
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in whatever way you see fit. |
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|
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-Richard |
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-- |
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