xfwm4

jxajro@jxajro-MCP61P:~$ sudo xfwm4
[sudo] password for jxajro:

(xfwm4:1899): GLib-WARNING **: (/build/buildd/glib2.0-2.34.1/./glib/gerror.c:390):g_error_new_valist: runtime check failed: (domain != 0)

(xfwm4:1899): xfwm4-WARNING **: Failed to connect to session manager: Falhou ao conectar ao gerenciador de sessão: SESSION_MANAGER environment variable not defined