Hello! I have Dell Latitude C600 laptop and LG L1953S monitor. Now, on the laptop's screen everything is fine - maximum resolution is 1024x768 at 75Hz and I can change resolution down to 640x480 and refresh rate down to 60Hz with no problem. But on LG monitor, only resolution that works is 1024x768. I can't change to 1280x1024 nor I can change to 800x600 or 640x480 (LG monitor displays "out of range"). Here's my xorg.conf:

Section "Screen"
Identifier "Screen 1"
Device "Ati Rage 128"
Monitor "Lg Flatron"
DefaultDepth 24

Subsection "Display"
Depth 8
Modes "1280x1024" "1024x768" "800x600" "640x480"
ViewPort 0 0
EndSubsection
Subsection "Display"
Depth 16
Modes "1280x1024" "1024x768" "800x600" "640x480"
ViewPort 0 0
EndSubsection
Subsection "Display"
Depth 24
Modes "1280x1024" "1024x768" "800x600" "640x480"
ViewPort 0 0
EndSubsection
EndSection

I don't know what to do. With windows I can use any resolution with no problem. Please help.

This info was found on this page. Click on the Specifications link.

Add these lines to /etc/X11/xorg.conf:

HorizSync 30-83
VertRefresh 56-75

Thanks for the reply! I already did, and it did not help