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On Tuesday 16 Dec 2014 21:16:38 Randy Westlund wrote: |
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> Hey guys, |
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> |
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> When I'm compiling something large and close the lid of my laptop (lid |
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> close events disabled) or leave it on the couch where it can't get |
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> proper airflow, it tends to overheat and crash. If I leave it open and |
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> on a table, everything is fine. |
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> |
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> I have a quad-core processor and MAKEOPTS="-j5". During compilation, |
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> system load is around 5 and all 4 cores are maxed out. My CPU temp is |
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> 99C or under, which is safe for this machine. |
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> |
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> dmesg shows this every few minutes whenever my machine is at max temp, |
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> which I've read is normal: |
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> |
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> [ 2092.018902] CPU0: Core temperature above threshold, cpu clock throttled |
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> (total events = 179101) [ 2092.018903] CPU2: Core temperature above |
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> threshold, cpu clock throttled (total events = 179101) [ 2092.018906] |
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> CPU3: Package temperature above threshold, cpu clock throttled (total |
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> events = 227311) [ 2092.018907] CPU1: Package temperature above threshold, |
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> cpu clock throttled (total events = 227311) [ 2092.018908] CPU2: Package |
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> temperature above threshold, cpu clock throttled (total events = 227311) [ |
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> 2092.018916] CPU0: Package temperature above threshold, cpu clock |
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> throttled (total events = 227311) [ 2092.019864] CPU0: Core |
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> temperature/speed normal |
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> [ 2092.019865] CPU2: Core temperature/speed normal |
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> [ 2092.019866] CPU1: Package temperature/speed normal |
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> [ 2092.019867] CPU3: Package temperature/speed normal |
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> [ 2092.019868] CPU2: Package temperature/speed normal |
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> [ 2092.019874] CPU0: Package temperature/speed normal |
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> [ 2099.655532] mce: [Hardware Error]: Machine check events logged |
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> |
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> At the time of crash, syslog contains a bunch of '^@^@^@^@^@^@^@...', |
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> but nothing useful. |
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> |
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> It looks like my cpu clock is being scaled, but perhaps not being scaled |
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> enough. I'm guessing the processor halts when I hit 100C. Again, when |
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> I leave it well-ventilated it never goes above 99C and everything is |
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> fine. |
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> |
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> Any ideas about where I should look? |
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> |
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> Randy |
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|
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There may be nothing wrong with your configuration, but something wrong with |
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the design of your laptop. Some laptops are not designed particularly well |
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with regards to ventilation. In the summer I have a desk fan which I turn on |
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and direct it on the side of the laptop, so that air blows above and below. |
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The temperatures drop by more than 10-15C in a couple of minutes. Perhaps you |
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should try something similar. |
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|
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-- |
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Regards, |
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Mick |
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