Help on starting X window on redhat 9

["조성진" <plusaqua twonine com>]

Hi.

I'm currently using MGA G550 video card and LG L1810B LCD monitor (http://www.lgeus.com/Product/Monitor/L1810B.asp).

The installer probed both the video card and the monitor properly, but the monitor keeps displaying error message "input signal out of range" when using resolution 1024x768 or higher (works fine below 800x600).

L1810B has H-sync of 30-80 khz and V-sync of 56-85Hz and supports up to 1280x1024 75Hz  The XF86Config file seemed to be configured correctly (at least the h-sync and v-sync, and the video card driver "mga"). 

I also tried some "generic" monitor settings, but didn't worked also.