Hi all,
I installed kernel 2.6.21. After booting, I observed that any module is loaded. Therefore, I can not connect to the internet. How can I handle this problem ? Is creating improper ramdisk the reason of the problem ?
Thanks for your interests.

- what Linux distribution?
- how did you install the kernel (compiled yourself, installed from a binary package, ...)?
- how do you know modules are not loaded?

Generally you either compile the modules into the kernel, or as modules. If they're compiled as (separate) modules, they need to be loaded specifically. Use
as root to manually load a module called modulename. You can also configure this to be automatic with the modules configuration file(s) under /etc.

well...
I use Mandriva 2006
I compiled myself. Here is the compilation process :
#cd linux-2.6.21
#patch -p1 -i <../real-time.patch
#cp arch/i386/defconfig .config
#make oldconfig
#make xconfig
#make clean
#make bzImage
#make modules
#make modules_install
#mkinitrd /boot/initrd-2.6.21.img 2.6.21
#cp arch/i386/boot/bzImage /boot/vmlinuz-2.6.21
#cp System.map /boot/System.map-2.6.21
#ln -s /boot/System.map-2.6.21 /boot/System.map
#kate /etc/lilo.conf
#/sbin/lilo

With the lsmod command, I realize that none of modules are loaded.