Fix high CPU temperature issue on PC with Nvidia Optimus after Ubuntu 16.04 LTS upgrade

The best way of upgrading to Ubuntu 16.04 LTS is to make a clean install. But if you have already hit the upgrade button or used the apt-get update command line on your computer with Nvidia Optimus graphics card, chances are that the CPU is turning very hot than usual in some scenarios. I noticed it on my test PC and have been scratching my head since the upgrade plunge. Seems like the CPU is doing all the graphics load. It is definitely a corrupted Nvidia Optimus graphics card drivers. The solution was simple – just install the Nvidia drivers. Note that I’m talking about the Bumblee project Nvidia drivers which are exclusively developed for GNU/Linux Nvidia Optimus technology based devices.

nv_optimus_3d_original

Launch Terminal and type the following commands one at a time:

sudo apt-get install nvidia-319-updates nvidia-settings-319-updates

It’s time to edit the conf settings:

optirun nvidia-settings

Set the following values by editing: /etc/bumblebee/bumblebee.conf

Driver=nvidia
KernelDriver=nvidia-319-updates
LibraryPath=/usr/lib/nvidia-319-updates:/usr/lib32/nvidia-319-updates
XorgModulePath=/usr/lib/nvidia-319-updates/xorg,/usr/lib/xorg/modules

That’s it. You can now save the conf file. Close everything and reboot the computer. If it is still not fixing the problem, run the following command to switch to Intel:

sudo prime-select intel
Kiran Kumar
Hi there! I'm Kiran Kumar, founder of FOSSLinux.com. I'm an avid Linux lover and enjoy hands-on with new promising distros. Currently, I'm using Ubuntu as a daily driver and run several other distros such as Fedora, Solus, Manjaro, Debian, and some new ones on my test PC and virtual machines. I have a day job as an Engineer, and this website is one of my favorite past time activities, especially during Winter ;). When I'm not writing for FOSSLinux, I'm seen biking and hiking on scenic trails. I hope you enjoy using this website as much as I do writing for it. Feedback from readers is something that inspires me to do more and spread Linux love!. If you find a time, drop me an email or feedback from the 'Contact' page. Or simply leave a comment below if you found this article useful. Have a good day!

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