Re: Unusual CPU heat when charging on a hybrid laptop

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On Wed, 2018-02-07 at 14:42 +0330, PMH wrote:
> Hello,
> I noticed this problem after kernel update of 4.14.14. Before the
> update CPU temp
> would stay somewhere in 38-48 degrees zone. Since the update however,
> only
> when laptop's battery is charging(and I'm using it at the same time)
> CPU
> temp gets as high as 60-70 degrees and it eventually causes a crash
> which
> forces me to restart.
> 
> NOTE: I'm not saying this issue is related to the kernel update I'm
> just
> saying I noticed it after the update only.
> 
> My machine: Asus UX301ne laptop
> CPU: intel Corei7 6500 skylake 2.5GHz
> Graphics: Intel HD graphics + Nvidia GTX 950m
> 
> How I tried to solve the problem:
> Firstly I noticed that when plugged in and charging, Opening up the
> gnome-settings and clicking on "Details" causes a crash that forces
> me to
> restart. I don't know how I can find any info on why that happens.
> 
> Secondly I think this is somehow related to my hybrid cards and the
> open-source driver of NVIDIA. Also possibly PRIME. I do not know how
> I can
> check this unfortunately. In addition, this question seems to address
> the
> same problem of mine.
> https://ask.fedoraproject.org/en/question/111016/laptop-gets-hot-whil
> e-charging-really-hot-with-monitor-fans-cant-tell/
> 
> However none of the solutions provided at the page helped me.
> Also Fans Work fine. They go 5400rpm when I plug the charger in.
> 
> I should say that I don't need the NVIDIA graphics at all! Intel
> would
> do... So if there is a way to disable NVIDIA and get rid of this
> problem It
> would be allright. Also if possible I would like to avoid non-free
> drivers.
> 
> Any help and/or clue would be greatly appreciated.
> Thank you for your time.
> And one word of advice: Don't buy Hybrid Graphic devices...
> they're waste of time and money :(
> 
Try adding 'modprobe.blacklist=nouveau rd.blacklist=nouveau' to the
kernel cmdline at boot. If this helps you can make it permanent
by using for example 'grubby', see:
https://docs.fedoraproject.org/f27/system-administrators-guide/kernel-m
odule-driver-configuration/Working_with_the_GRUB_2_Boot_Loader.html

AV
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