dynamic HorizSync

Stefan Drexleri niam.tni at googlemail.com
Sun Jun 25 16:42:15 PDT 2006


if i want to use my TFT flatscreen in mode 1280x1024 @75Hz i have to
write this to Screen section:

Option         "HorizSync" "80"
Option         "VertRefresh" "75"

Using second line alone doesn't work, i'll have to apply HotizSync
option, too or only 60 Hz are reached.

Section "Screen"
    Identifier     "Screen0"
    Device         "Card0"
    Monitor        "Monitor0"
    DefaultDepth    16
    Option         "DPMS"
    Option         "HorizSync" "80"
    Option         "VertRefresh" "75"
    SubSection     "Display"
        Viewport    0 0
        Depth       16
        Modes      "1280x1024" "1024x768" "800x600"

Problem is, HorizSync of 80 is too high for modes 1024x768 and 800x600
(so i will have to comment it out that 1024x768 and 800x600 are
working). They use lower frequencies. So if i comment out both options
"HorizSync" and "VertRefresh", all modes are usable (working), but
1280x1024 only @ 60 Hz.

What can i do?

I want to use 1280x1024 @ 75Hz.


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