近几天也不知怎么啦，树莓源很不稳定，update一下都要几个小时，实数无奈，换国内源吧。
首先备份，这是一个好习惯

sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

然后就可以添加新的源了，换成阿里云的

deb http://mirrors.aliyun.com/raspbian/raspbian/ jessie main contrib non-free rpi

就这么简单，然后

sudo apt-get update

发现一个测速工具，还没有试
https://github.com/martin68/apt-smart

20.04 LTS的阿里源
deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse

sudo apt update
秒开

首先是目前的浴室效果

来自网上的一些小积木

- 阅读剩余部分 -

众所周知，BPI系列的官方固件里没有Linux Headers，倒是armbian的镜像里集成了，那么我们该怎么办呢，先用m2+尝试，首先下载源码

git clone https://github.com/BPI-SINOVOIP/BPI-M2P-bsp.git
cd BPI-M2P-bsp
./build.sh BPI-M2P-720P

暂时要加一下BPI-M2P-720P据说以后可能就不用了，
BPI-M2P-bsp/BPI-M2P-bsp/sunxi-pack/chips/sun8iw7p1/configs（編譯出來的路徑）
內核:BPI-M2P-bsp/SD/bpi-m2p/BPI-ROOT/lib/modules
这个还不是很理解，实测之后再继续补充日志