Gentoo能直接在图形界面下登录吗？XFCE4

hunk@localhost~$cat /etc/conf.d/xdm 
# We always try and start X on a static VT. The various DMs normally default
# to using VT7. If you wish to use the xdm init script, then you should ensure
# that the VT checked is the same VT your DM wants to use. We do this check to
# ensure that you have't accidently configured something to run on the VT
# in your /etc/inittab file so that you don't get a dead keyboard.
CHECKVT=7

# What display manager do you use ? [ xdm | gdm | kdm | kdm-3.5 | kdm-4.0 | entrance ]
# NOTE: If this is set in /etc/rc.conf, that setting will override this one.
# KDE-specific note: kdm-3.5 and kdm-4.0 are just examples. You will find all 
# possible versions by looking at the directories in /usr/kde/.
DISPLAYMANAGER="slim"
hunk@localhost~$cat /etc/rc.conf
# /etc/rc.conf: Global startup script configuration settings

# UNICODE specifies whether you want to have UNICODE support in the console. 
# If you set to yes, please make sure to set a UNICODE aware CONSOLEFONT and 
# KEYMAP in the /etc/conf.d/consolefont and /etc/conf.d/keymaps config files.

UNICODE="yes"

# Set EDITOR to your preferred editor.
# You may use something other than what is listed here.

#EDITOR="/bin/nano"
#EDITOR="/usr/bin/vim"
EDITOR="/usr/bin/emacs"

# DISPLAYMANAGER has moved to /etc/conf.d/xdm

# XSESSION is a new variable to control what window manager to start
# default with X if run with xdm, startx or xinit. The default behavior
# is to look in /etc/X11/Sessions/ and run the script in matching the
# value that XSESSION is set to. The support scripts are smart enough to
# look in all bin directories if it cant find a match in /etc/X11/Sessions/,
# so setting it to "enlightenment" can also work. This is basically used
# as a way for the system admin to configure a default system wide WM,
# allthough it will work if the user export XSESSION in his .bash_profile, etc.
#
# NOTE: 1) this behaviour is overridden when a ~/.xinitrc exists, and startx
# is called.
# 2) even if ~/.xsession exists, if XSESSION can be resolved, it will
# be executed rather than ~/.xsession, else KDM breaks ...
#
# Defaults depending on what you install currently include:
#
# Gnome - will start gnome-session
# kde-<version> - will start startkde (look in /etc/X11/Sessions/)
# Xfce4 - will start a XFCE4 session
# Xsession - will start a terminal and a few other nice apps

#XSESSION="Gnome"