ubuntu 右上角的〔网络管理器network-manager〕消失,解决办法

打开终端，依次输入以下内容

sudo service network-manager stop
sudo rm /var/lib/NetworkManager/NetworkManager.state
sudo service network-manager start
sudo gedit /etc/NetworkManager/nm-system-settings.conf
#把 false 改成 true 保存 退出
sudo service network-manager restart

然后再输入

gconftool --recursive-unset /apps/panel
rm -rf ~/.gconf/apps/panel
pkill gnome-panel