우분투 xfce4 삭제
sudo apt-get -f install
sudo apt-get clean
sudo apt-get autoclean
sudo apt-get update
sudo apt-get -y purge xfce4
sudo apt-get -y purge xfconf xfce4-utils xfwm4 xfce4-session xfdesktop4 exo-utils xfce4-panel xfce4-terminal  thunar
sudo apt-get purge xfconf
sudo apt-get autoremove
sudo apt-get -f install
sudo apt-get clean
sudo apt-get autoclean
sudo apt-get update
sudo apt-get remove xfce4-*



text로 부팅
vi /etc/default/grub


GRUB_CMDLINE_LINUX_DEFAULT="text quiet splash"
GRUB_CMDLINE_LINUX="text"
GRUB_TERMINAL=console

update-grub


부팅해상도
vi /etc/default/grub

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video=1024x768"
GRUB_GFXMODE=1024x768
update-grub

1024x768 : 792 773
800x600 : 788 771
640x480 : 785 769