Enhancing GPU performance in Dell Latitude C610 lappy.

Hi all.

Was messing around with my oldish machine and noticed that adding few (embolden on purpose) options to the /etc/X11/xorg.conf (as root) greatly improves the performance.

Here is my xorg.conf file:

# File generated by XFdrake (rev )

# **********************************************************************
# Refer to the xorg.conf man page for details about the format of
# this file.
# **********************************************************************

Section “ServerFlags”
Option “DontZap” “False” # disable (server abort)
AllowMouseOpenFail # allows the server to start up even if the mouse does not work
#DontZoom # disable / (resolution switching)
EndSection

Section “Module”
Load “dbe” # Double-Buffering Extension
Load “v4l” # Video for Linux
Load “extmod”
Load “glx” # 3D layer
Load “dri” # direct rendering
EndSection

Section “Monitor”
Identifier “monitor1”
VendorName “Generic”
ModelName “Flat Panel 1024×768”
HorizSync 31.5-48.0
VertRefresh 56.0-65.0

# TV fullscreen mode or DVD fullscreen output.
# 768×576 @ 79 Hz, 50 kHz hsync
ModeLine “768×576” 50.00 768 832 846 1000 576 590 595 630

# 768×576 @ 100 Hz, 61.6 kHz hsync
ModeLine “768×576” 63.07 768 800 960 1024 576 578 590 616
EndSection

Section “Device”
Identifier “device1”
VendorName “ATI Technologies Inc”
BoardName “ATI Radeon X1950 and earlier”
Driver “ati”
Option “DPMS”
Option “AccelMethod” “exa”
Option “AGPMode” “4”
Option “FBTexPercent” “80”
Option “ScalerWidth” “2048”
Option “EXAOptimizeMigration” “true”
Option “DRI” “on”
Option “DynamicClocks” “on”
Option “MigrationHeuristic” “greedy”
Option “AccelDFS” “true”
Option “BackingStore” “true”
Option “ColorTiling” “on”
Option “ExaNoComposite” “false”
Option “BusType” “AGP”
Option “EnableDepthMoves” “on”

EndSection

Section “Screen”
Identifier “screen1”
Device “device1”
Monitor “monitor1”
DefaultColorDepth 24

Subsection “Display”
Depth 8
Modes “1024×768” “832×624” “800×600” “640×480” “480×360” “320×240”
EndSubsection

Subsection “Display”
Depth 15
Modes “1024×768” “832×624” “800×600” “640×480” “480×360” “320×240”
EndSubsection

Subsection “Display”
Depth 16
Modes “1024×768” “832×624” “800×600” “640×480” “480×360” “320×240”
EndSubsection

Subsection “Display”
Depth 24
Modes “1024×768” “832×624” “800×600” “640×480” “480×360” “320×240”
EndSubsection
EndSection

Section “ServerLayout”
Identifier “layout1”
Screen “screen1”
EndSection

Have fun!

Andy

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