I guess it is nVidia -
david@linux-ftcs:~> cat /etc/X11/xorg.conf
nvidia-settings: X configuration file generated by nvidia-settings
nvidia-settings: version 1.0 (buildmeister@builder62) Thu Jun 3 09:42:34 PDT 2010
/…/
SaX generated X11 config file
Created on: 2010-07-25T23:26:11+0800.
Version: 8.1
Contact: Marcus Schaefer <sax@suse.de>, 2005
Automatically generated by [SaX2] (8.1)
PLEASE DO NOT EDIT THIS FILE!
Section “ServerLayout”
Identifier “Layout[all]”
Screen 0 “Screen0” 0 0
InputDevice “Keyboard[0]” “CoreKeyboard”
InputDevice “Mouse[1]” “CorePointer”
Option “Xinerama” “0”
EndSection
Section “Files”
InputDevices “/dev/gpmdata”
InputDevices “/dev/input/mice”
FontPath “/usr/share/fonts/misc:unscaled”
FontPath “/usr/share/fonts/local”
FontPath “/usr/share/fonts/75dpi:unscaled”
FontPath “/usr/share/fonts/100dpi:unscaled”
FontPath “/usr/share/fonts/Type1”
FontPath “/usr/share/fonts/URW”
FontPath “/usr/share/fonts/Speedo”
FontPath “/usr/share/fonts/PEX”
FontPath “/usr/share/fonts/cyrillic”
FontPath “/usr/share/fonts/latin2/misc:unscaled”
FontPath “/usr/share/fonts/latin2/75dpi:unscaled”
FontPath “/usr/share/fonts/latin2/100dpi:unscaled”
FontPath “/usr/share/fonts/latin2/Type1”
FontPath “/usr/share/fonts/latin7/75dpi:unscaled”
FontPath “/usr/share/fonts/baekmuk:unscaled”
FontPath “/usr/share/fonts/japanese:unscaled”
FontPath “/usr/share/fonts/kwintv”
FontPath “/usr/share/fonts/truetype”
FontPath “/usr/share/fonts/uni:unscaled”
FontPath “/usr/share/fonts/CID”
FontPath “/usr/share/fonts/ucs/misc:unscaled”
FontPath “/usr/share/fonts/ucs/75dpi:unscaled”
FontPath “/usr/share/fonts/ucs/100dpi:unscaled”
FontPath “/usr/share/fonts/hellas/misc:unscaled”
FontPath “/usr/share/fonts/hellas/75dpi:unscaled”
FontPath “/usr/share/fonts/hellas/100dpi:unscaled”
FontPath “/usr/share/fonts/hellas/Type1”
FontPath “/usr/share/fonts/misc/sgi:unscaled”
FontPath “/usr/share/fonts/xtest”
FontPath “/opt/kde3/share/fonts”
EndSection
Section “Module”
Load “dri”
Load “dbe”
Load “extmod”
Load “glx”
EndSection
Section “ServerFlags”
Option “AllowMouseOpenFail” “on”
Option “ZapWarning” “on”
EndSection
Section “InputDevice”
Driver “kbd” will be disabled unless ‘Option “AutoAddDevices” “off”’
is set in “ServerFlags” section.
Identifier "Keyboard[0]"
Driver "kbd"
Option "Protocol" "Standard"
Option "XkbLayout" "us"
Option "XkbModel" "microsoftpro"
Option "XkbRules" "xfree86"
EndSection
Section “InputDevice”
Driver “mouse” will be disabled unless ‘Option “AutoAddDevices” “off”’
is set in “ServerFlags” section.
Identifier "Mouse[1]"
Driver "mouse"
Option "Buttons" "5"
Option "Device" "/dev/input/mice"
Option "Name" "ImPS/2 Generic Wheel Mouse"
Option "Protocol" "explorerps/2"
Option "Vendor" "Sysp"
Option "ZAxisMapping" "4 5"
EndSection
Section “Modes”
Identifier “Modes[0]”
EndSection
Section “Monitor”
Identifier “Monitor[0]”
VendorName “ACR”
ModelName “ACER AL1716W”
UseModes “Modes[0]”
DisplaySize 367 230
HorizSync 30.0 - 83.0
VertRefresh 43.0 - 76.0
Option “CalcAlgorithm” “XServerPool”
Option “DPMS”
Option “PreferredMode” “1440x900”
EndSection
Section “Monitor”
Identifier “Monitor0”
VendorName “Unknown”
ModelName “Acer AL1716W”
HorizSync 31.0 - 83.0
VertRefresh 56.0 - 76.0
EndSection
Section “Device”
Identifier “Device[0]”
Driver “nvidia”
VendorName “NVIDIA”
BoardName “GeForce 6100 nForce 405”
EndSection
Section “Device”
Identifier “Device0”
Driver “nvidia”
VendorName “NVIDIA Corporation”
BoardName “GeForce 6100 nForce 405”
EndSection
Section “Screen”
Identifier “Screen[0]”
Device “Device[0]”
Monitor “Monitor[0]”
DefaultDepth 24
SubSection “Display”
Depth 15
Modes “1440x900” “1280x720” “1024x768” “800x600”
EndSubSection
SubSection “Display”
Depth 16
Modes “1440x900” “1280x720” “1024x768” “800x600”
EndSubSection
SubSection “Display”
Depth 24
Modes “1440x900” “1280x720” “1024x768” “800x600”
EndSubSection
SubSection “Display”
Depth 8
Modes “1440x900” “1280x720” “1024x768” “800x600”
EndSubSection
EndSection
Section “Screen”
Identifier “Screen0”
Device “Device0”
Monitor “Monitor0”
DefaultDepth 24
Option “TwinView” “0”
Option “TwinViewXineramaInfoOrder” “CRT-0”
Option “metamodes” “1440x900 +0+0; 1280x720 +0+0; 1024x768 +0+0; 800x600 +0+0”
SubSection “Display”
Depth 24
EndSubSection
EndSection
There are lot of improvements now, unable to use sub-pixel smoothing in firefox; confused over installing cairo i586. Is there any other way to do that or getting MSFonts.