问题：

我使用Ubuntu 20.04，内核版本5.7.0。我想运行旧版本的内核(5.5.0 )，所以下载软件包：

cd /tmp/



wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5/linux-headers-5.5.0-050500_5.5.0-050500.202001262030_all.deb



wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5/linux-headers-5.5.0-050500-generic_5.5.0-050500.202001262030_amd64.deb



wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5/linux-image-unsigned-5.5.0-050500-generic_5.5.0-050500.202001262030_amd64.deb



wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5/linux-modules-5.5.0-050500-lowlatency_5.5.0-050500.202001262030_amd64.deb



sudo dpkg -i *.deb

不幸的是，我无法安装这个版本的内核，dpkg存在一些错误：

dpkg: error processing package linux-image-unsigned-5.5.0-050500-generic (--install):


 dependency problems - leaving unconfigured


Setting up linux-modules-5.5.0-050500-lowlatency (5.5.0-050500.202001262030) ...


Errors were encountered while processing:


 linux-image-unsigned-5.5.0-050500-generic

答案1：

你要使用lowlatency模块安装generic内核。

安装方法不对，你需要下载所有generic或lowlatency软件包。

答案2：

是否只下载：

wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5/linux-headers-5.5.0-050500_5.5.0-050500.202001262030_all.deb



wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5/linux-headers-5.5.0-050500-generic_5.5.0-050500.202001262030_amd64.deb



wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5/linux-image-unsigned-5.5.0-050500-generic_5.5.0-050500.202001262030_amd64.deb

然后

sudo dpkg -i *.deb