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Hi, I am using fc3, and I would like to know how to increase monitor refresh rate. I have tried "Applications" > "Preferences" > "Screen Resolution" but I can't seem ...
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  1. #1
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    How to increase refresh rate


    Hi,
    I am using fc3, and I would like to know how to increase monitor refresh rate.

    I have tried "Applications" > "Preferences" > "Screen Resolution" but I can't seem to increase greater than 85Hz.

    I have tried to edit /etc/X11/xorg,conf
    but not sure how to...


    So here is my file.
    How may I specify the refresh rate?
    There is a range below for vertical refresh, 50-160, how do I know what is an acceptable range if I were to extend this?

    Code:
     # XFree86 4 configuration created by pyxf86config
    
    Section "ServerLayout"
    Identifier "Default Layout"
    Screen 0 "Screen0" 0 0
    InputDevice "Mouse0" "CorePointer"
    InputDevice "Keyboard0" "CoreKeyboard"
    EndSection
    
    Section "Files"
    
    # RgbPath is the location of the RGB database. Note, this is the name of the
    # file minus the extension (like ".txt" or ".db"). There is normally
    # no need to change the default.
    # Multiple FontPath entries are allowed (they are concatenated together)
    # By default, Red Hat 6.0 and later now use a font server independent of
    # the X server to render fonts.
    RgbPath "/usr/X11R6/lib/X11/rgb"
    FontPath "unix/:7100"
    EndSection
    
    Section "Module"
    Load "dbe"
    Load "extmod"
    Load "fbdevhw"
    Load "glx"
    Load "record"
    Load "freetype"
    Load "type1"
    Load "dri"
    EndSection
    
    Section "InputDevice"
    
    # Specify which keyboard LEDs can be user-controlled (eg, with xset(1))
    # Option "Xleds" "1 2 3"
    # To disable the XKEYBOARD extension, uncomment XkbDisable.
    # Option "XkbDisable"
    # To customise the XKB settings to suit your keyboard, modify the
    # lines below (which are the defaults). For example, for a non-U.S.
    # keyboard, you will probably want to use:
    # Option "XkbModel" "pc102"
    # If you have a US Microsoft Natural keyboard, you can use:
    # Option "XkbModel" "microsoft"
    #
    # Then to change the language, change the Layout setting.
    # For example, a german layout can be obtained with:
    # Option "XkbLayout" "de"
    # or:
    # Option "XkbLayout" "de"
    # Option "XkbVariant" "nodeadkeys"
    #
    # If you'd like to switch the positions of your capslock and
    # control keys, use:
    # Option "XkbOptions" "ctrl:swapcaps"
    # Or if you just want both to be control, use:
    # Option "XkbOptions" "ctrl:nocaps"
    #
    Identifier "Keyboard0"
    Driver "kbd"
    Option "XkbModel" "pc105"
    Option "XkbLayout" "us"
    EndSection
    
    Section "InputDevice"
    Identifier "Mouse0"
    Driver "mouse"
    Option "Protocol" "IMPS/2"
    Option "Device" "/dev/input/mice"
    Option "ZAxisMapping" "4 5"
    Option "Emulate3Buttons" "yes"
    EndSection
    
    Section "Monitor"
    Identifier "Monitor0"
    VendorName "Monitor Vendor"
    ModelName "PTS0309"
    DisplaySize 320 240
    HorizSync 30.0 - 70.0
    VertRefresh 50.0 - 160.0
    Option "dpms"
    EndSection
    
    Section "Device"
    Identifier "Videocard0"
    Driver "vesa"
    VendorName "Videocard vendor"
    BoardName "VESA driver (generic)"
    EndSection
    
    Section "Screen"
    Identifier "Screen0"
    Device "Videocard0"
    Monitor "Monitor0"
    DefaultDepth 24
    SubSection "Display"
    Viewport 0 0
    Depth 16
    Modes "800x600" "640x480"
    EndSubSection
    SubSection "Display"
    Viewport 0 0
    Depth 24
    Modes "1024x768" "800x600" "640x480"
    EndSubSection
    EndSection
    
    Section "DRI"
    Group 0
    Mode 0666
    EndSection

  2. #2
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    Well, you should look for the specifications. Either check the back panel of your monitor or the manual.
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  3. #3
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    I have a Samtron moniter, and they publish every detail for each model...more specs about my moniter than I even knew I had! I'm sure other manufacturers do this. Just set the range to what is specified for your moniter and Xorg should default to the highest frequency.

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  5. #4
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    the refresh rate is 50-160 of my monitor, and this is also whats in the file.

    but my scr refresh rate is @ 85Hz. How can I change this to 160?

    using fc3. If there is no graphical app to increase rate, is there a command line arg?

  6. #5
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    is horz or vertical refresh rate important?

  7. #6
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    Maybe if you just change that 50-160 to 160?
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  8. #7
    Linux Enthusiast puntmuts's Avatar
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    Check the manual of the monitor for supported frequency/resolution/depth combinations. You will see that 160 is only supported in very few combinations. Most of the time when you setup your config the right way (use the specified ranges from the manual) X will probe the optimal rate.

    If you want a different refresrate you could calculate a modeline and add that to your config. Some googling will result in a page where you an enter the data of your monitor and howto add that to your configfile.
    I\'m so tired .....
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  9. #8
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    Furthermore, monitors are usually set to run at a certain refresh rate given whatever resolution you're running at.

    So in all probability your monitor can do 160hz, just the resolution has to probably be set to something low like 640x480.

  10. #9
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    Quote Originally Posted by Social Burn
    Furthermore, monitors are usually set to run at a certain refresh rate given whatever resolution you're running at.

    So in all probability your monitor can do 160hz, just the resolution has to probably be set to something low like 640x480.
    Yes, I checked the range, 50-160, and that is correct.
    My monitor is very new.

    I still don't know how I can change the refresh rate from 85 to something higher.
    Obviously I can do higher, but HOW.

    Please I want to use my monitor without my eyes hurting.
    We have very strong experts on this forum, is this question really that hard to asnwer.

    How can i specify a higher refresh rate?

  11. #10
    Linux Guru budman7's Avatar
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    I believe the problem is your video card driver.
    The monitor will support higher refresh rates, but "Vesa" won't.
    Btw, 85 hz, you should be just fine.
    I have my monitor set at 85 hz, and i use my monitor at least 8 hours a day.
    Viewsonic PF790 19" Flat screen.
    Vert refresh rate 30-97
    Horz refresh rate 50-180
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