You can modify the default desktop manager in raspbian with:
[root@dataBananaBerry:~]# update-alternatives --config x-session-manager There are 5 options for alternative x-session-manager (that provides /usr/bin/x-session-manager). Selecction Path Priority Status ------------------------------------------------------------ * 0 /usr/bin/startlxde 50 automatic mode 1 /usr/bin/lxsession 49 manual mode 2 /usr/bin/openbox-session 40 manual mode 3 /usr/bin/startlxde 50 manual mode 4 /usr/bin/startxfce4 50 manual mode 5 /usr/bin/xfce4-session 40 manual mode Press <Enter> to keep the default value [*] or choose number for selection: 1 update-alternatives: using /usr/bin/lxsession to provide /usr/bin/x-session-manager (x-session-manager) in manual mode
And select the option of the dektop you want.