On Thu 03 Jun 2021 at 18:34:41 (+0100), Tixy wrote: > On Thu, 2021-06-03 at 12:19 -0400, Polyna-Maude Racicot-Summerside wrote: > > On 2021-06-03 11:27 a.m., Marc Auslander wrote: > > > On 6/3/2021 10:20 AM, Ottavio Caruso wrote: > > > > On 03/06/2021 09:09, Polyna-Maude Racicot-Summerside wrote: > > > > I check the temperature regularly with sensors and it's usually > > > > between 42 and 52 C. > > > > > > > > Problem is I can't check the temperature while it's freezing. > > > > > > > > You might run a background job that keeps writing the sensors to a file, > > > say every 5 minutes, although a really don't know how quickly the > > > temperature can change. My own monitoring program logs the temperature (and battery) every six seconds. > > > That said, this sounds like a long shot to me. > > > > > Temperature doesn't change in a matter of one or two minutes, unless you > > have a real heat dissipation problem and you'll see in this case the > > changes from the time you power it on the temperature will rise fast. > > Only if workload stays the same and the system has reached equilibrium. > Temperature can change in a matter of seconds if workload suddenly > changes. > > $ cat /sys/class/thermal/thermal_zone2/type > x86_pkg_temp > $ cat /sys/class/thermal/thermal_zone2/temp > 47000 > $ while : ; do : ; done & > [1] 4739 > $ cat /sys/class/thermal/thermal_zone2/temp > 63000 > $ kill 4739 > $ cat /sys/class/thermal/thermal_zone2/temp > 49000 > > That's 15C change in about second on this laptop. My desktop will go > from drawing 17W from the mains when idle, to 160W when maxing out all > 8 CPUs and temperature will jump about from 40C to 95C in a few > seconds. I haven't managed that rate of rise on a laptop with two cores, but it could certainly cook your thighs. The attached shows a profile when I was running the browser on a weather radar site much of the day. I don't recall whether the machine was switched off from 16:22 to 16:30, or just not running X, but it was certainly switched off between 16:53 and 17:18 as I was fetching my wife from work through flooded streets. (The day reached 29°C whereupon over 4 inches of rain fell.) Cheers, David.
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