1 从下面官网下载相应的包，共3个。
https://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15-rc9/
linux-headers-4.15.0-041500rc9-generic_4.15.0-041500rc9.201801212130_amd64.deb
linux-headers-4.15.0-041500rc9_4.15.0-041500rc9.201801212130_all.deb
linux-image-4.15.0-041500rc9-generic_4.15.0-041500rc9.201801212130_amd64.deb
2 执行dpkg -i *.deb
3 修改/etc/default/grub文件
GRUB_DEFAULT="Advanced options for Ubuntu>Ubuntu, with Linux 4.15.0-52-generic"
4 执行update-grub
5 reboot