Changing RefreshRate

[buraq]

i have got an ati graphics card and irc monitor. when i change my resolution to 1280x1024 my monitor display only at 43HZ but i used 60HZ before at this resolution on windows.i edit xfree86--4.conf where /etc/X11 but problem couldn't be solved.

thanks for your helps.

[djhobo9]

Try changing your HorizSync and VertRefresh to values which wrap around 60 at a very small range. I run 1280x1024 @ 60Hz w/ both parameters at 55.0-65.0. Also make sure you have 1280x1024 enabled further down in the file.

Also, very simple but very easy to miss... make sure you are editing the proper config file. If there is currently a file in /etc/X11 called "xorg.conf" then you are running Xorg, not XFree. If that file exists, edit it instead as Xorg supersedes XFree. Note that both files may exist--edit xorg.conf in that case.

Here is the relevant portion of my X config file (xorg.conf--both XF86Config-4 and xorg.conf have the same format) ... it may come in handy:

...... other stuff .....

Section "Monitor"
    Identifier     "Generic Monitor"
    HorizSync       55.0 - 65.0
    VertRefresh     55.0 - 65.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "All"
    Driver         "nvidia"
EndSection

Section "Screen"
    Identifier     "Default Screen"
    Device         "All"
    Monitor        "Generic Monitor"
    DefaultDepth    24
    Option         "UseFBDev" "true"
    SubSection     "Display"
        Depth       8
        Modes      "1280x1024" "1024x768" "800x600" "640x480"
    EndSubSection
    SubSection     "Display"
        Depth       16
        Modes      "1280x1024" "1024x768" "800x600" "640x480"
    EndSubSection
    SubSection     "Display"
        Depth       24
        Modes      "1280x1024" "1024x768" "800x600" "640x480"
    EndSubSection
EndSection

Leave your driver setting as is, however, as you said you have an ATI card.

Let us know what happens.

[buraq]

Thank you for your help i solved the problem as you said.i change the ref.rates 55-65 in Xfree86-4 file