Redhat 9, ATI Radeon 7500, DVI digital display -- output flaky

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Greetings,

Have redhat 9 installed (I bought a RHN subscription, eh).

I have an ATI Radeon 7500 video card, and a Viewsonic VP201m LCD monitor
which runs at 1600x1200.

While it runs, the output is flaky (I get flashes, some web pages look
bad, I get grainy little lines drawn on my screen).  Something is
clearly wrong.

I am using the updated redhat stock kernel.  Yes, the radeon modules is
running.

Attached is my /etc/X11/XF86Config

Anyone else had this kind of problem???


========================================



# 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      "keyboard"
    Option        "XkbRules" "xfree86"
    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" "no"
EndSection

Section "InputDevice"

# If the normal CorePointer mouse is not a USB mouse then
# this input device can be used in AlwaysCore mode to let you
# also use USB mice at the same time.
    Identifier  "DevInputMice"
    Driver      "mouse"
    Option        "Protocol" "IMPS/2"
    Option        "Device" "/dev/input/mice"
    Option        "ZAxisMapping" "4 5"
    Option        "Emulate3Buttons" "no"
EndSection

Section "Monitor"
    Identifier   "Monitor0"
    VendorName   "Monitor Vendor"
    ModelName    "VP201m"
    DisplaySize  410    310
    HorizSync    30.0 - 82.0
    VertRefresh  50.0 - 85.0
    Option        "dpms"
EndSection

Section "Device"
    Identifier  "Videocard0"
    Driver      "radeon"
    VendorName  "Videocard vendor"
    BoardName   "ATI Radeon 7500"
    VideoRam    65536
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1600x1200" "1400x1050" "1280x1024" "1280x960" "1152x864" "1024x768" "800x600" "640x480"
EndSubSection
EndSection


Section "DRI"
    Group        0
    Mode         0666
EndSection





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