宽屏安装的问题

In fact, all the method at web can not resolute my problem.

my OS is RF WS5 , i setup the new kernel(and drivers for it), new xorg-* of Asinux 2.0 sp1 in order to my 915 VGA's driver is setuped. After that

my steps is:
1, Make sure that you have the intel 915 VGA driver, my platform is RF WS5, before I start my X I config my X with
$Xconfigrator
once it can detect you Video Card automaticlly, you finished 99% work of config your extend wide moniter. If it cannot do that, you must install your video card driver first.
As for me, RF WS 5 can not config my Video card and it has not the intel 915 VGA card's driver, but i find them at Asinux 2.0 SP1's pacgage, for the reasion that RF WS 5 foud on Asinux 2.0, they can use the same update package.
2, download 915resoluton packege and
$make
$make install
use the command of
$915resolution -l
to find which is you need,for example ID is 58. then you run the command
$915resolution 58 1280 800 32
the last parameter is the piextle of your monitor. then add a command line to your script named rc.local, it's located at
/etc/rc.local
add the command line
915resolution 58 1280 800 32
at last line

then change your X11 conf file at /etc/X11/xorg.conf

change the default subsection of display like you need
32
1280*800

then startx, every thins ok now