http://blog.csdn.net/ddk3001/article/details/47340119
After installing Ubuntu 14.04.2, the kernel is 3.16.0-30-generic
1. Virtual machine Installation
(1) VMware
Install the multi-core using the following command:
sudo apt-get install linux-image-3.16.0-44-genreic
(2) VirtualBox
Install the multi-core using the following command:
sudo apt-get install linux-image-3.16.0-44-genreic
sudo apt-get install linux-image-extra-3.16.0-44-genreic
If extra is not installed, the mouse is not available after booting
2. Computer Installation
Install the multi-core using the following command:
sudo apt-get install linux-image-3.16.0-44-genreic
sudo apt-get install linux-image-extra-3.16.0-44-genreic
If you do not install extra, the login screen freezes after startup and the keyboard and mouse are not available
3, modify the Grub.cfg
/boot/grub/grub.cfg
Change the value of all timeout= to 10 so that when Ubuntu starts it will display the list of kernels and choose which kernel to start
Reference: http://blog.csdn.net/roryuna/article/details/6856980
ubuntu:14.04.2 installing multiple Linux Cores