What happens when a Macbook overheats?












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I have an Apple Macbook on which I am running Trisquel GNU/Linux (similar distro to Ubuntu). I am experiencing some problems that I suspect may be related to the laptop overheating and I am wondering: what is the expected behavior when a Macbook overheats?



What I'm really looking for is an answer in the form of a sequential list of expected events, as the temperature increases.



Obviously, one of the first 'events' would be the fan rpm increasing. CPU throttling is something I would expect to occur at some point. I expect one of the last things to happen would be for the whole machine to trip a thermal cutout and reboot (which I have experienced). But, are there any other things that might be expected to happen in-between?



If anyone could provide approximate temperatures with this list of events, that would be even more helpful. Also, would any of this behavior be expected to change if I am running Linux, as opposed to Mac OS X?










share|improve this question























  • The expected sequence of events is that the fans would spin faster & faster until equilibrium is maintained. Anything else is a fault. If you're not running macOS, that 'fault' could be poor co-ordination between the guest OS & the hardware.

    – Tetsujin
    Jan 5 at 10:55













  • @Tetsujin then let's say I put the laptop in an oven and gradually increase the temperature. What would happen as I go beyond the point where the fan speed is maxed-out? Perhaps I should re-phrase my question?

    – Time4Tea
    Jan 5 at 10:58











  • Results would be random. Under control of macOS, kernel-task would be pre-empting the cooling decision & eating more cycles than the machine actually possesses - in effect halting all other activity until the 'fake' CPU load resulted in the fans returning temps to equilibrium. If you force higher temperatures than that, then roll a dice to see what hardware fails first; there's no road-map for that.

    – Tetsujin
    Jan 5 at 11:01
















0















I have an Apple Macbook on which I am running Trisquel GNU/Linux (similar distro to Ubuntu). I am experiencing some problems that I suspect may be related to the laptop overheating and I am wondering: what is the expected behavior when a Macbook overheats?



What I'm really looking for is an answer in the form of a sequential list of expected events, as the temperature increases.



Obviously, one of the first 'events' would be the fan rpm increasing. CPU throttling is something I would expect to occur at some point. I expect one of the last things to happen would be for the whole machine to trip a thermal cutout and reboot (which I have experienced). But, are there any other things that might be expected to happen in-between?



If anyone could provide approximate temperatures with this list of events, that would be even more helpful. Also, would any of this behavior be expected to change if I am running Linux, as opposed to Mac OS X?










share|improve this question























  • The expected sequence of events is that the fans would spin faster & faster until equilibrium is maintained. Anything else is a fault. If you're not running macOS, that 'fault' could be poor co-ordination between the guest OS & the hardware.

    – Tetsujin
    Jan 5 at 10:55













  • @Tetsujin then let's say I put the laptop in an oven and gradually increase the temperature. What would happen as I go beyond the point where the fan speed is maxed-out? Perhaps I should re-phrase my question?

    – Time4Tea
    Jan 5 at 10:58











  • Results would be random. Under control of macOS, kernel-task would be pre-empting the cooling decision & eating more cycles than the machine actually possesses - in effect halting all other activity until the 'fake' CPU load resulted in the fans returning temps to equilibrium. If you force higher temperatures than that, then roll a dice to see what hardware fails first; there's no road-map for that.

    – Tetsujin
    Jan 5 at 11:01














0












0








0








I have an Apple Macbook on which I am running Trisquel GNU/Linux (similar distro to Ubuntu). I am experiencing some problems that I suspect may be related to the laptop overheating and I am wondering: what is the expected behavior when a Macbook overheats?



What I'm really looking for is an answer in the form of a sequential list of expected events, as the temperature increases.



Obviously, one of the first 'events' would be the fan rpm increasing. CPU throttling is something I would expect to occur at some point. I expect one of the last things to happen would be for the whole machine to trip a thermal cutout and reboot (which I have experienced). But, are there any other things that might be expected to happen in-between?



If anyone could provide approximate temperatures with this list of events, that would be even more helpful. Also, would any of this behavior be expected to change if I am running Linux, as opposed to Mac OS X?










share|improve this question














I have an Apple Macbook on which I am running Trisquel GNU/Linux (similar distro to Ubuntu). I am experiencing some problems that I suspect may be related to the laptop overheating and I am wondering: what is the expected behavior when a Macbook overheats?



What I'm really looking for is an answer in the form of a sequential list of expected events, as the temperature increases.



Obviously, one of the first 'events' would be the fan rpm increasing. CPU throttling is something I would expect to occur at some point. I expect one of the last things to happen would be for the whole machine to trip a thermal cutout and reboot (which I have experienced). But, are there any other things that might be expected to happen in-between?



If anyone could provide approximate temperatures with this list of events, that would be even more helpful. Also, would any of this behavior be expected to change if I am running Linux, as opposed to Mac OS X?







mac macbook overheating






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Jan 5 at 10:53









Time4TeaTime4Tea

204111




204111













  • The expected sequence of events is that the fans would spin faster & faster until equilibrium is maintained. Anything else is a fault. If you're not running macOS, that 'fault' could be poor co-ordination between the guest OS & the hardware.

    – Tetsujin
    Jan 5 at 10:55













  • @Tetsujin then let's say I put the laptop in an oven and gradually increase the temperature. What would happen as I go beyond the point where the fan speed is maxed-out? Perhaps I should re-phrase my question?

    – Time4Tea
    Jan 5 at 10:58











  • Results would be random. Under control of macOS, kernel-task would be pre-empting the cooling decision & eating more cycles than the machine actually possesses - in effect halting all other activity until the 'fake' CPU load resulted in the fans returning temps to equilibrium. If you force higher temperatures than that, then roll a dice to see what hardware fails first; there's no road-map for that.

    – Tetsujin
    Jan 5 at 11:01



















  • The expected sequence of events is that the fans would spin faster & faster until equilibrium is maintained. Anything else is a fault. If you're not running macOS, that 'fault' could be poor co-ordination between the guest OS & the hardware.

    – Tetsujin
    Jan 5 at 10:55













  • @Tetsujin then let's say I put the laptop in an oven and gradually increase the temperature. What would happen as I go beyond the point where the fan speed is maxed-out? Perhaps I should re-phrase my question?

    – Time4Tea
    Jan 5 at 10:58











  • Results would be random. Under control of macOS, kernel-task would be pre-empting the cooling decision & eating more cycles than the machine actually possesses - in effect halting all other activity until the 'fake' CPU load resulted in the fans returning temps to equilibrium. If you force higher temperatures than that, then roll a dice to see what hardware fails first; there's no road-map for that.

    – Tetsujin
    Jan 5 at 11:01

















The expected sequence of events is that the fans would spin faster & faster until equilibrium is maintained. Anything else is a fault. If you're not running macOS, that 'fault' could be poor co-ordination between the guest OS & the hardware.

– Tetsujin
Jan 5 at 10:55







The expected sequence of events is that the fans would spin faster & faster until equilibrium is maintained. Anything else is a fault. If you're not running macOS, that 'fault' could be poor co-ordination between the guest OS & the hardware.

– Tetsujin
Jan 5 at 10:55















@Tetsujin then let's say I put the laptop in an oven and gradually increase the temperature. What would happen as I go beyond the point where the fan speed is maxed-out? Perhaps I should re-phrase my question?

– Time4Tea
Jan 5 at 10:58





@Tetsujin then let's say I put the laptop in an oven and gradually increase the temperature. What would happen as I go beyond the point where the fan speed is maxed-out? Perhaps I should re-phrase my question?

– Time4Tea
Jan 5 at 10:58













Results would be random. Under control of macOS, kernel-task would be pre-empting the cooling decision & eating more cycles than the machine actually possesses - in effect halting all other activity until the 'fake' CPU load resulted in the fans returning temps to equilibrium. If you force higher temperatures than that, then roll a dice to see what hardware fails first; there's no road-map for that.

– Tetsujin
Jan 5 at 11:01





Results would be random. Under control of macOS, kernel-task would be pre-empting the cooling decision & eating more cycles than the machine actually possesses - in effect halting all other activity until the 'fake' CPU load resulted in the fans returning temps to equilibrium. If you force higher temperatures than that, then roll a dice to see what hardware fails first; there's no road-map for that.

– Tetsujin
Jan 5 at 11:01










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