当ubuntu出现“The System is running in low graphics mode

Your Screen, graphics card,and input device settings could not be detected correctly. You will need to configure this yourself.”

 解决方法1：

cd /etc/X11
sudo cp xorg.conf.failsafe xorg.conf

 解决方法2：

sudo apt-get install nvidia-current

sudo apt-get install --reinstall ubuntu-desktop
sudo apt-get install gdm
reboot

再一次ctrl+alt+F1输入用户名和密码进入文字界面

sudo service lightdm stop
sudo dpkg-reconfigure gdm3
sudo reboot

目前只尝试用了方法1进行了测试，已经跑了24小时还没出现问题，后期试过之后再回来反馈。