I installed a OpenWRT 8.09 rc2 to my PC, and lcd4linux package. When I run:
lcd4linux -l, will list no display drive:
LCD4Linux 0.10.2-SVN-877:883M
Copyright (C) 2005, 2006, 2007 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
available display drivers:
   NULL                : generic

No matter how I modify /etc/lcd4linux.conf or use my own, lcd4linux can't find display driver:
my own conf:
Display CF634 {
    Driver    'Crystalfontz'
    Model     '634'
    Port      '/dev/usb2'   #I am not sure here, since no ttyUSB0... but LCD backlit is on...
    Speed     115200
    Contrast  85
    Backlight 20
    Icons     1
}

Layout Default {
   Row1 {
           Col1 Hello!
   }
}
                       
Display 'CF634'
Layout 'Default'

Here is the output:
root@OpenWrt:/mnt# lcd4linux -f /mnt/crystalfontz -Fvv
Version 0.10.2-SVN-877:883M starting
[FIFO] read 'Plugin:FIFO.fifopath', value is '/tmp/lcd4linux.fifo'
[KVV] Using station 89
[KVV] Using default port 80
[KVV] Using default refresh interval of 60 seconds
[KVV] Default abbreviation setting: off
plugin_mpd.c: [MPD] v0.83, check lcd4linux configuration file...
[MPD] WARNING: Plugin is not enabled! (set 'enabled 1' to enable this plugin)
lcd4linux.c: initializing driver Crystalfontz
drv_init(Crystalfontz) failed: no such driver

I have tried 3 kinds of LCD product, all same errors.
Is this because the lcd4linux package doesn't contain driver?