the system is running in low-graphics mode 解决办法【ubuntu】
1.利用Ctrl + Alt + (F1~F6中的某一个) 进入纯命令模式，输入用户名，密码
2.解决方案
a.
sudo apt-get install fglrx sudo rebootb.
sudo apt-get update sudo apt-get purge flglrx sudo rebootc.
sudo chown lightdm:lightdm -R /var/lib/lightdm sudo chown avahi-autoipd:avahi-autoipd -R /var/lib/avahi-autoipd sudo chown colord:colord -R /var/lib/colord sudo rebootd.
sudo add-apt-repository ppa:ubuntu-x-swat/x-updates sudo apt-get update sudo apt-get upgrade sudo reboot
