今天我想打开 light 管理器，输入 root 密码之后没有反应，我把桌面快捷方式的命令复制下来lightdm-gtk-greeter-settings-pkexec，到终端中以管理员身份运行，结果报错，信息如下
Unable to init server: Could not connect: Connection refused
Unable to init server: 无法连接：Connection refused
(lightdm-gtk-greeter-settings:3077): Gtk-CRITICAL **: 12:00:02.920: _gtk_style_provider_private_get_settings: assertion 'GTK_IS_STYLE_PROVIDER_PRIVATE (provider)' failed
(lightdm-gtk-greeter-settings:3077): Gtk-CRITICAL **: 12:00:02.920: _gtk_style_provider_private_get_settings: assertion 'GTK_IS_STYLE_PROVIDER_PRIVATE (provider)' failed
(lightdm-gtk-greeter-settings:3077): Gtk-CRITICAL **: 12:00:02.920: _gtk_style_provider_private_get_settings: assertion 'GTK_IS_STYLE_PROVIDER_PRIVATE (provider)' failed
/usr/bin/lightdm-gtk-greeter-settings-pkexec：行 13: 3077 段错误 （核心已转储）pkexec "${APP_PATH}" "$@"
有哪位大佬看看怎么回事谢谢拉