1.查看ubuntu的内核版本
cat /proc/version
uname -sr
###任选其一查看
2.根据自己的操作系统下载.deb文件
http://kernel.ubuntu.com/~kernel-ppa/mainline/
3.连网的状态采用wget 下载到本机
wget https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.15/amd64/linux-headers-5.15.0-051500-generic_5.15.0-051500.202110312130_amd64.deb
wget https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.15/amd64/linux-headers-5.15.0-051500_5.15.0-051500.202110312130_all.deb
wget https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.15/amd64/linux-image-unsigned-5.15.0-051500-generic_5.15.0-051500.202110312130_amd64.deb
wget https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.15/amd64/linux-modules-5.15.0-051500-generic_5.15.0-051500.202110312130_amd64.deb
4.使用apt安装
dpkg -i *.deb ###下载完成使用该命令安装
5.重启生效，然后查看内核
reboot ###重启生效
uname -sr ###查看内核