Hi,

how can I figure out correct value in /etc/X11/XF86Config or /etc/X11/XF86Config-4 in Section ''Monitor''
for my LG L1720P 17" monitor, in order to get it running with native resolution 1280x1024 @ 75Hz
I have: Knoppix 3.7, LG L1720P , ATI Rage Fury Pro VIVO 32Mb

Currently I found following values from Google:
---
Section ''Monitor''
Identifier ''monitor1''
VendorName ''Generic''
ModelName ''Flat Panel 1280x1024''
HorizSync 31.5-67
VertRefresh 50-75

# 1280x1024 @ 61 Hz, 64.2 kHz hsync
ModeLine ''1280x1024'' 110 1280 1328 1512 1712 1024 1025 1028 1054
---

It is running @ 60Hz,
I understand that I need to change values of MODELINE section? Or HorizSync and VertRefresh ?
how could I calculate correct values for running @ 75Hz (like in windows).

And what is the difference between: /etc/X11/XF86Config and /etc/X11/XF86Config-4 - where should I make changes?

Thanks in advance