Step 1: 编译内核，安装驱动
Device Drivers -> <*> Connector - unified userspace <-> kernelspace linker ---> Graphics support -> [*] Support for frame buffer devices ---> [*] Enable firmware EDID ... [*] VESA VGA graphics support
Step 2: 修改grub.conf
kernel /boot/kernel root=/dev/sda3 vga=0x341
0x341=833, 1024x768x32
0x318=792, 1024x768x24
792是习惯数字，但现在的机器不支持（也许配置有问题？）