On Tuesday, December 16, 2014 04:16:38 PM Randy Westlund wrote: > Hey guys, > > When I'm compiling something large and close the lid of my laptop (lid > close events disabled) or leave it on the couch where it can't get > proper airflow, it tends to overheat and crash. If I leave it open and > on a table, everything is fine. > > I have a quad-core processor and MAKEOPTS="-j5". During compilation, > system load is around 5 and all 4 cores are maxed out. My CPU temp is > 99C or under, which is safe for this machine. > > dmesg shows this every few minutes whenever my machine is at max temp, > which I've read is normal: > > [ 2092.018902] CPU0: Core temperature above threshold, cpu clock throttled > (total events = 179101) [ 2092.018903] CPU2: Core temperature above > threshold, cpu clock throttled (total events = 179101) [ 2092.018906] CPU3: > Package temperature above threshold, cpu clock throttled (total events = > 227311) [ 2092.018907] CPU1: Package temperature above threshold, cpu clock > throttled (total events = 227311) [ 2092.018908] CPU2: Package temperature > above threshold, cpu clock throttled (total events = 227311) [ 2092.018916] > CPU0: Package temperature above threshold, cpu clock throttled (total > events = 227311) [ 2092.019864] CPU0: Core temperature/speed normal > [ 2092.019865] CPU2: Core temperature/speed normal > [ 2092.019866] CPU1: Package temperature/speed normal > [ 2092.019867] CPU3: Package temperature/speed normal > [ 2092.019868] CPU2: Package temperature/speed normal > [ 2092.019874] CPU0: Package temperature/speed normal > [ 2099.655532] mce: [Hardware Error]: Machine check events logged > > At the time of crash, syslog contains a bunch of '^@^@^@^@^@^@^@...', > but nothing useful. > > It looks like my cpu clock is being scaled, but perhaps not being scaled > enough. I'm guessing the processor halts when I hit 100C. Again, when > I leave it well-ventilated it never goes above 99C and everything is > fine. > > Any ideas about where I should look? > > Randy
Try cleaning the vents. Also, most couches have a tendency to compress when something like a laptop is on it. Effectively blocking all airflow. If the temperature goes to 99C when on top of a table, return the laptop to the shop as it is clearly not working properly. -- Joost
