OS: ubuntu 9.04 Action: when select general grub item => run 1024x600 when select External Monitor grub item => run normal mode(maybe 1024x768) 1. see menu.lst-sample(grub config file) and add custom arg to kernel 2. copy file cp xorg.conf.* /etc/X11/ cp gisanfu-switch-xorg.sh /etc/init.d/ chmod +x /etc/init.d/gisanfu-switch-xorg.sh 3. exec update-rc.d update-rc.d gisanfu-switch-xorg.sh defaults