ubuntu the system is running in low-graphics mode 解决办法

ubuntu16.04版本   the system is running in low-graphics mode 

系统提示：

the system isrunning in low-graphics modeyour screen,graphics card,and input device settingcould not bedetected correctly.you will need to configure these yourself.

找到资料

http://blog.sina.com.cn/s/blog_66439a3e0101bnce.html

//机器上之前有一个老版本，请按照下面这些命令来做。Nvidia和ATI/AMD显卡的命令都一样。sudo add-apt-repository ppa:ubuntu-x-swat/x-updatessudo apt-get updatesudo apt-get upgrade

sudo apt-get upgrade 执行时间较长约10分钟