Debian squeeze usb-lcd(Displaylink) dual head

Set up USB-LCD device and set Framebuffer option for kernel

apt-get update
apt-get upgrade
apt-get dist-upgrade
apt-get clean
apt-get install build-essential xorg-dev libusb-dev git-core


git clone http://git.plugable.com/webdav/udlfb
cd udlfb
make && make install

.../build pathがないエラー

当環境でmoduleをビルドしていないからで、moduleビルドする
or
apt-get install module-assistant
m-a prepare
module-assistant:http://wiki.debian.org/ModuleAssistant

apt-get install xserver-xorg-video-fbdev

set framebuffer(It is for grub v2)
/etc/default/grub

GRUB_CMDLINE_LINUX_DEFAULT="quiet vga=xxx"

update grub
vga params:http://tldp.org/HOWTO/Framebuffer-HOWTO/x168.html#AEN235
Here also details about grub v2.