因?yàn)橄到y(tǒng)自帶的gnome有問(wèn)題，所以改用xfce桌面

先UPDATE服務(wù)器

然后安裝 epel-release

再安裝 lightdm

再安裝 group xfce

修改/etc/lightdm/lightdm.conf，找到xdmcp這一欄，把disable改成true，port=177的注釋去掉。

systemctl stop gdm

systemctl disable gdm

啟動(dòng)lightdm服務(wù)

systemctl enable lightdm

systemctl isolate graphical.target