上海出差2

1，Unable to locate package   sudo apt-get update  https://blog.youkuaiyun.com/xiaogugood/article/details/18400669

2，docker ubuntu装opencv时有点问题

3，linux下如何手动编译安装bzip2库  https://blog.youkuaiyun.com/shangyexin/article/details/80968192

4，ubuntu 黑屏了，用root登录 ctrl+alt+f1 重装驱动