Edited by dance707 at 2016-4-4 15:24

Welcome to the Deepin Forum. What version of Deepin are you using and what kind of notebook do you have and the graphic specifications ?

My Deepin is 15.1.1. My computer brand is Casper. May be You won't know that. My graphic is nvidia GTM 740M and also Intel hd graphics 4600.

You could try using Deepin User Feedback in your applications to report your Casper model number and specifiications. We do have notebook users in the Deepin Forum that work okay. Your over heating is most likely due to the Hybrid graphics. This technology is well supported on Windows but still quite experimental in Linux. Some users install a third-party Bumblebee program to implement Optimus-like functionality and power saving but requires extra configuration.

https://wiki.debian.org/Bumblebee

I installed Bumblebee. It's better now. But I still hear a noise. I search on the internet. Some of users installed driver from nvidia web site. Should I try?

Good to hear its better now. I doubt that the newer Nvidia driver would help your Optimus problem. I would wait on Deepin to provide a newer driver in there Deepin Driver Manager. Also the up and coming new Deepin Kernel Plan may help you problem.

https://bbs.deepin.org/post/30883

It was good but again It's very hot
after that I downloaded driver from nvidia web site. When I started it It said that:
Can you help me?

Well this is one of the reasons I recommended you wait on Deepin. What the error message is saying is that it does appear to detect a Nvidia GPU supported by the Nvidia 361.42 and for further details check the readme file to see more information. Also you have to prepare you system for this driver before you can install it. Best to wait on Deepin.

Another alternative that some users take is instead of the Bumblebee program. Disabling one of the graphics in your BIOS may help, but may not be available with all BIOSes and does not allow GPU switching.

How can I prepare? Is there a special thing for it?

First you would need to check that readme file to see if your GPU is even supported with the 361.42 driver. Then you would have to do some  home work and read the Wiki's in Debian and maybe other distros that give more information.