原因：内核版本过高，所以安装dnw的ko文件时报错无效的模块格式（Invalid module format）
解决办法：升级或降级内核，将内核变为4.19.0-041900-generic即可（4开头的应该都行）
解决过程：
升级较为简单，复制粘贴代码即可。
对于64位操作系统：
cd /tmp/ wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19/linux-headers-4.19.0-041900_4.19.0-041900.201810221809_all.deb wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19/linux-headers-4.19.0-041900-generic_4.19.0-041900.201810221809_amd64.deb wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19/linux-image-unsigned-4.19.0-041900-generic_4.19.0-041900.201810221809_amd64.deb wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19/linux-modules-4.19.0-041900-generic_4.19.0-041900.201810221809_amd64.deb sudo dpkg -i *.deb
对于32位操作系统：
cd /tmp/ wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19/linux-headers-4.19.0-041900_4.19.0-041900.201810221809_all.deb wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19/linux-headers-4.19.0-041900-generic_4.19.0-041900.201810221809_i386.deb wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19/linux-image-4.19.0-041900-generic_4.19.0-041900.201810221809_i386.deb wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19/linux-modules-4.19.0-041900-generic_4.19.0-041900.201810221809_i386.deb sudo dpkg -i *.deb
降级请参考：
https://www.cnblogs.com/goolinli/p/15886784.htmlhttps://www.cnblogs.com/goolinli/p/15886784.html
