The system is running in low-graphics mode时解决方法

当虚拟机重启时出现the system is running in low-graphics mode时，

主要是因为Ubuntu启动不了图形界面，如下图

ctrl+alt+F1 进入输入

此时输入命令修改权限：
df -h
cd /etc/X11
sudo cp xorg.conf.failsafe xorg.conf
sudo reboot

可顺利进入Ubuntu

转载：https://blog.youkuaiyun.com/qingfengxiaosong/article/details/83042724

failed to start clean up any mess
https://blog.youkuaiyun.com/u010953692/article/details/85036741