使用虚拟机VirtualBox安装ubuntu 12.04LTS x32 The system is running in low-graphics mode

Ctrl+ALT+F1 进入控制台

 

解决方案：
sudo apt-get install --reinstall ubuntu-desktop 
sudo apt-get install fglrx
sudo reboot

转载于:https://www.cnblogs.com/lucker/archive/2013/05/31/3110450.html