From: Dr. Daniel James White PhD (
Date: Fri Jun 11 2004 - 06:50:34 CDT

Hi everyone!

how can I enable direct rendering DRI on fedora core 2?
I have an ATI radeon 8500 LE,

Should I use the redeon driver, or the r200 driver?

I edited my xorg.conf file is as below, but VMD and pymol tells me I
am still using indirect mesa rendering, and it is SLOW.....

the ATI closed source driver doesn't work on the fedora 2.6 kernel so I
cant use that.



# XFree86 4 configuration created by pyxf86config

Section "ServerLayout"
         Identifier "Default Layout"
         Screen 0 "Screen0" 0 0
         InputDevice "Mouse0" "CorePointer"
         InputDevice "Keyboard0" "CoreKeyboard"

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"

Section "Module"
         Load "dbe"
         Load "extmod"
         Load "fbdevhw"
         Load "glx"
         Load "record"
         Load "freetype"
         Load "type1"
         Load "dri"

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 "XkbModel" "pc105"
         Option "XkbLayout" "fi"

Section "InputDevice"
         Identifier "Mouse0"
         Driver "mouse"
         Option "Protocol" "IMPS/2"
         Option "Device" "/dev/input/mice"
         Option "ZAxisMapping" "4 5"
         Option "Emulate3Buttons" "yes"

Section "Monitor"
         Identifier "Monitor0"
         VendorName "Monitor Vendor"
         ModelName "CPD-G520"
         DisplaySize 400 300
         HorizSync 30.0 - 130.0
         VertRefresh 48.0 - 170.0
         Option "dpms"

Section "Device"
         Identifier "Videocard0"
         Driver "radeon"
         VendorName "Videocard vendor"
         BoardName "ATI Radeon 8500LE"

Section "Screen"
         Identifier "Screen0"
         Device "Videocard0"
         Monitor "Monitor0"
         DefaultDepth 24
         DefaultDepth 24
         SubSection "Display"
                 Viewport 0 0
                 Depth 24
                 Modes "1280x1024" "1280x960" "1152x864" "1024x768"
"800x600" "640x480"

Section "DRI"
         Group 0
         Mode 0666

Dr. Daniel James White BSc. (Hons.) PhD
Cell Biology
Department of biological and environmental science
PO Box 35
University of Jyvskyl
Jyvskyl FIN 40014
+358 14 260 4183 (work)
+358 468102840 (new mobile)