Screen/LCD driver for kernel?

I compile the kernel myself. Is there any special option I need to
chose in the kernel so I can use X11 in Ubuntu?

The kernel image I downloaded online has not trouble when after boots
up in ubuntu. The kernel image I compile can't find the screen/video
driver. I guess it's a kernel issue. Not X11 issue.

X11 points to the /dev/fb0, where can I enble it in kernel?

Thanks.

(II) Module fbdev: vendor="X.Org Foundation"
        compiled for 1.5.99.902, module version = 0.4.0
        ABI class: X.Org Video Driver, version 5.0
(II) FBDEV: driver for framebuffer: fbdev
(WW) Falling back to old probe method for fbdev
(II) Loading sub module "fbdevhw"
(II) LoadModule: "fbdevhw"
(II) Loading /usr/lib/xorg/modules/linux//libfbdevhw.so
(II) Module fbdevhw: vendor="X.Org Foundation"
        compiled for 1.6.0, module version = 0.0.2
        ABI class: X.Org Video Driver, version 5.0
(EE) open /dev/fb0: No such file or directory
(EE) No devices detected.

Fatal server error:
no screens found

Please consult the The X.Org Foundation support
         at http://wiki.x.org
for help.
Please also check the log file at "/var/log/Xorg.0.log" for additional
information.

ddxSigGiveUp: Closing log