> On Thu, Jan 4, 2018 at 11:00 PM, Tim Mouraveiko <tim...@ipcopper.com> wrote: > > Pavel, > > > > As I mentioned before, I repeatedly and fully power-cycled the motherboard > > and reset BIOS > > and etc. It made no difference. I can see that the processor was not > > drawing any power. The > > software code behaved in a similar fashion on other processors, until I > > fixed it so that it would > > not kill any more processors. > > > > In case you are curious there was no overheating, no 100% utilization, no > > tampering with > > hardware (GPIO pins or anything of that sort), no overclocking and etc. No > > hardware issues > > or changes at all. > > Please, do not top post. > > Just to be sure, have you checked same CPU on different motherboard? > It might be that voltage regulators on it just died.
I did not check the same CPU on a different motherboard, but I did test the code on both the same type of CPU and a different type of CPU. > > > >> > In all my years of extensive experience writing drivers and kernels, I > >> > never came across a situation > >> > where you could brick an x86 CPU. Not until recently, when I was working > >> > on debugging a piece of > >> > code and I bricked an Intel CPU. I am not talking about an experimental > >> > motherboard or anything > >> > exotic or an electrical issue where the CPU got fried, but before the > >> > software code execution the CPU > >> > was fine and then it dead. There were signs that something was not > >> > right, that the code was causing > >> > unusual behavior, which is what I was debugging. > >> > > >> > Has anyone else ever experienced a bricked CPU after executing software > >> > code? I just wanted to get > >> > input from the community to see if anyone had had any experience like > >> > that, since it seems rather > >> > unusual to me. > >> > >> Never seen that before. Can you try to brick another one? :-). > >> > >> You may want to remove AC power and battery, wait for half an hour, > >> then attempt to boot it... > >> > >> Pavel > >> -- > >> (english) http://www.livejournal.com/~pavelmachek > >> (cesky, pictures) > >> http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html > >> > > > > > > > > -- > With Best Regards, > Andy Shevchenko
