On Sat, 2015-06-27 at 13:21 -0600, jd1008 wrote: > I noticed that during the installation of fc20, the air coming > out of the exhaust vent was almost scalding if I kept my finger there > for about a minute or so. By scalding, I mean if I had touched > a metal surface of that temperature for say 30 seconds, I would > have felt some pain. > > Also, I noticed that the cooling fan remained at normal operating > speed, instead of spinning faster, as I usually hear it spin fast for > about a few seconds when I power it on. > > So, I am not sure whether the problem is the fan or the cpu. I can't say that I've ever felt air come out of a system that was too hot to keep my fingers in. So I think there is something to be concerned about. Rarely has my laptop ever revved up to full blast, and even then it was just toasty on the fingers. There was a nasty hot plastic smell, though, if it went full pelt (there were about five fan speeds; ranging from near silent, quiet whirr with barely warm air, mildly noisy with comfortably warm air, that might be expected during normal use, then one or two more hotter ones that I rarely ever experienced). Installs very rarely went full blast, you might get a few seconds of highly intensive computations, while dependencies were worked, but it would drop down again shortly. Web browsing could cause problems much more often, with pages that had Flash video going bonkers, or bad scripting. The fan would go full blast as the CPU heated up. Again, never got to the point where it might cause me any skin damage from the hot air. Computers have a couple of ways of not overheating, that may be used in conjunction; such as slowing the CPU down so it generates less heat, or speeding up the fan to dissipate more. This may be automatic, there may be preferences as to what you'd prefer (such as staying quieter as a preference, so it slows the CPU down first, then ramps up the fan speed, rather than speed up the fan, then slow down the CPU). You could look in the BIOS for cool and quite options, to see if you can influence anything. If you are getting hot air blasting out, I'd be inclined to believe that the heatsink is attached and working. If it weren't attached well, I'd expect inadequate heat dispersion from the airflow, and the CPU to overheat and shutdown (or burn out). If the fan seems to run without a struggle, I'd expect that the fan is okay. Its the computer that changes the fan speed, so a lack of proper fan speed changes would suggest the controller rather than the fan. Perhaps the thermal sensor isn't working well? Do you have another OS you can easily try on it (e.g. a live disk). On my laptop, if I leave it in the BIOS (interrupting the boot-up), the fans will eventually go fast, though blowing cool air (the CPU is not heating up). I think it's a failsafe to ramp up the cooling in case of a fault. -- tim@localhost ~]$ uname -rsvp Linux 3.19.8-100.fc20.i686 #1 SMP Tue May 12 17:42:35 UTC 2015 i686 All mail to my mailbox is automatically deleted, there is no point trying to privately email me, I will only read messages posted to the public lists. George Orwell's '1984' was supposed to be a warning against tyranny, not a set of instructions for supposedly democratic governments. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
