[MLUG] RE: members Digest, Vol 50, Issue 9

["Damian Kostiuk" <EMAIL:PROTECTED>]

Thanks Stephen for the tips on the /etc/X11/xorg.conf and modeline
suggestion to get my screen working properly beyond the 800x600 screen
resolution.

For the archive and any future searchers, I thought I would note that the
added lines of code required some tweaks to the Front Porch and Back Porch
settings; notably that when I logged out and the screen reset, the image was
way off proper positioning.

I used the following, but I changed my porch settings to these:

Horz.
Front porch: 48 Back porch: 80 Sync width: 32
Vert.
Front porch: 3 Back porch: 26 Sync width: 6

And then with a little position tweaking it seems to work fine.

Below were the suggested settings for xorg.conf I got from my searches:

# Customized display mode 
Section "Modes" 
    # 1680x1050 @ 60 Hz 
    # Horizontal pixels 
    # Front porch: 104 Back porch: 280 Sync width: 176 
    # Sync polarity: - Scan rate: 65.29kHz Active pixels: 1680 
    # Vertical lines: 
    # Front porch: 3 Back porch: 30 Sync width: 6 
    # Sync polarity + Refresh rate 59.954Hz Active pixels: 1050 
    # Pixel clock: 146.25MHz 
    Identifier "16:10" 
    ModeLine "1680x1050" 146.2 1680 1960 2136 2240 1050 1080 1086 1089 
-hsync +vsync 
EndSection 

# Configure your monitor 
Section "Monitor" 
    Identifier "Monitor0" 
    VendorName "Monitor Vendor" 
    ModelName "DELL 2005FPW" 
    UseModes "16:10" 
    HorizSync 30.0 - 83.0 
    VertRefresh 56.0 - 75.0 
    Option "dpms" 
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 "1680x1050" "800x600" "640x480" 
    EndSubSection 
EndSection 

Notes: my system is a Dual 450 PPC former Mac running Fedora Core 6 with an
r128 (ATI Rage 128) video card.



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