升级内容有很多好处，比如支持最新硬件驱动，使系统更安装等。但是升级内容也会带来一些问题，比如一些软件的兼容性问题，从而出现一些莫名其妙的问题等，所以升级时要慎重考虑。
升级方法：
下载脚本：
https://software.intel.com/en-us/forums/opencl/topic/738108
使用：
mv install_OCL_driver.sh_.txt install_OCL_driver.sh chmod 755 install_OCL_driver.sh sudo su ./install_OCL_driver.sh install
完成后的提示信息：
...
Installation completed successfully.
Next steps:
1. Add OpenCL users to the video group: ‘sudo usermod -a -G video USERNAME‘
e.g. if the user running OpenCL host applications is foo, run: sudo usermod -a -G video foo
2. If you have Intel Pentium J4000 or Intel Celeron J3000, you will need to add:
i915.preliminary_hw_support=1
to the 4.7 kernel command line, in order to enable OpenCL functionality for these platforms.
3. Reboot into the patched 4.7 kernel
HINT: to boot into the 4.7 kernel do the following:
1) Hold the "shift" button during boot
2) When the GRUB menu appears, select "Advanced options for Ubuntu"
3) Select the Linux 4.7.0.intel.r5.0 kernel from the list
重启后即可。
离线文件：
链接: https://pan.baidu.com/s/1qXW2k5A 密码: 2rj2
Ubuntu 16.04升级Linux内核为4.7.0最快的方法
原文：http://www.cnblogs.com/EasonJim/p/7421231.html