http://bugs.freedesktop.org/show_bug.cgi?id=16374





--- Comment #17 from Michael Stein <[email protected]>  2009-02-09 00:40:30 PST 
---
I solved the problem. But it is long time ago and I forgot the commands. (Than
my brother gave me a nvidia-card - this was the final resolution...)

So ati:
The Problem was that the radeon-driver detects the maximum refresh-rate of the
display which something like 150Mhz. The graphiccard can't run this frequency
at the resolution 1920x1200.
So, I installed the ati-driver. He knows more about the card-specs and I
figured out the working refresh-rate with xrandr.

I finished with:
Section "Monitor"
        Identifier      "Configured Monitor"
        Vendorname      "Generic LCD Display"
        Modelname       "LCD Panel 1920x1200"
        Horizsync       30-83
        Vertrefresh     56.0 - 76.0
        modeline  "1920x1...@60" 138.2 1920 1968 2000 2080  1200 1203 1209 1235
+hsync -vsync
EndSection

Section "Device"
        Identifier      "Configured Video Device"
        Boardname       "ATI Radeon (vesa)"
        Vendorname      "ATI"
        Driver  "radeon"
        Option "UseModeline" "1"
        Option     "IgnoreEDID" "on"
        Option "PanelSize" "1920x1200"
        Option "PreferredMode" "1920x1...@60"
        Option "DDCMode" "on"
        Option "DynamicClocks" "on"
EndSection


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