The mfg. "spec sheet" for my 19'Soyo LCD monitor shows:

vert sync range 50-75 hz
horiz sync range 30-80 khz

The "owners manual" strongly suggests these display modes which are supported by my via graphics driver:

Resolution: Vert Freq: horiz Freq:
800x600 75hz 46.9khz
1024x768 60hz 48.4khz

If I choose to use the 1024x768 suggested resolution for this monitor, which one of the following would be best to put into the "monitor section" of my xorg.conf file?

1.) HorizSync 30-80
VertRefresh 50-75

2.) HorizSync 30-48.4
VertRefresh 50-60

3.) HorizSync 48.4
VertRefresh 60

Note: I am not sure the #3 entry above is valid because the manual fo xorg.conf states that these entriescan be either a "range" or "comma seperated list" of values.

Thank you for reading this post & I am looking forward to hearing any response.

vertical sync and horizontal refresh for an LCD monitor are not really important. (Unless, for some reason, it pretends to be an analog monitor). These settings are for CRTs which have to scar each screen completely. Digital monitors only update the part that changes.

Just add your manufacturers range.

Note "3 is valid - it has a comma separated list that contains only one member.

Have you tried omitting the sync information? If you don't specify it, the X-server should just read it from the vendor information supplied by the monitor when it's queried by X.

Here's what my monitor section looks like:

Thanks for your replys. You guys seem to imply that the HorizSync & VertRefresh entries of xorg.conf are really not relevant or necessary when using a Flat panel LCD monitor.

This might explain why the cmd Xorg -configure created one for me without those entries. It didn't work at first until I edited a few things like adding a default depth entry to the screen section & the horiz sync / vert refresh entries to the monitor section.

Most likely the only thing that needed changing was the Screen section. Here is how it looks now:

Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
DefaultColorDepth 16 ##....added by user root as the preferred color depth
#SubSection "Display" ##....this (depth 1) display-SubSection not always valid
# Viewport 0 0
# Depth 1
#EndSubSection
#SubSection "Display" ##....this (depth 4) display-SubSection not always valid
# Viewport 0 0
# Depth 4
#EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection